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GM 51 series diesel

Old Marine Engine » Diesel Inboards » GM 51 series diesel « Previous Next »

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seaguard
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Username: seaguard

Post Number: 1
Registered: 03-2007
Posted on Thursday, March 15, 2007 - 09:46 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Does anybody have much imformation such as history,numbers built,why were the discontinued.etc,on 51 series 2 and 4 cylinder,valveless GM diesels? My brother has two of the four cylinder models,in going order,and I have seen another marine model, years ago, in a boat.
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Amos B
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Posted on Monday, March 19, 2007 - 12:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have no personal experience with these engines but there was quite a lot of discussion about these engines on a detroit diesel group a couple years ago. The concensus seemed to be that they were very rugged, dependable, and fuel efficient engines but they were very noisy and any exhaust back pressure at all severely reduced their power. Because of the noise, people tended to put overly restrictive mufflers on them and then they did not perform well so Detroit ended production. I would love to find a two cylinder model.
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sherlock
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Username: sherlock

Post Number: 1
Registered: 11-2008
Posted on Wednesday, November 05, 2008 - 03:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I am looking for a 2-51 GM/Detroit Diesel Engine.
Thanks,...
Chuck Holmes
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larry_from_maryland
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Username: larry_from_maryland

Post Number: 324
Registered: 07-2003


Posted on Wednesday, November 05, 2008 - 06:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Do you mean a 2-53 or a 2-71?
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Amos B
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Posted on Wednesday, November 05, 2008 - 06:58 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have been looking for a 2-51 for years with no leads. I have pretty much given up hope of finding one. I have seen a couple 4-51's for sale but I am really interested in the 2-51.
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s.marsh
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Posted on Wednesday, November 05, 2008 - 07:48 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

http://albany.craigslist.org/grd/904792938.html
here is a 2-53 from an old john deere if that is what you need.I don't know about a 2-51 unless its very early, but those were only 3,4 or 6 cyl.If you have the bore and stroke, I may have the information about it.
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Amos B
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Posted on Wednesday, November 05, 2008 - 08:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The 2-51 and 4-51 were valveless detroits manufactured briefly in the early 1950's. They were fazed out when the 53 series that has exhaust valves in the head went into production. It is my understanding that there were very few 2-51's made but quite a number of 4-51's were made.

The 53 series are everywhere and are not what we are interested in.
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sherlock
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Username: sherlock

Post Number: 2
Registered: 11-2008
Posted on Monday, November 17, 2008 - 03:01 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The 2 and 4-51 Engines were built from 1950 to 1959 and the 53 Series started to replaced them in 1957, acording to my Detroit Diesel 2-Cycle Engine History Build Sheet I found on the internet. Allot more 4-51's than 2-51's and like Amos-B,..I have been looking for the 2-51's for years my-self.
I have found and sold (3) 4-51's lately, to the Collectors, for their GM/Detroit Diesel Engine Collections/Museums and have orders to find a 2-51 for them. Alaso a 1-71 would be nice!
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rparr
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Posted on Monday, November 17, 2008 - 03:28 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I had a 51 Series Service Manual around here somewhere, but can't find it. In addition, I have a Gray Marine Master Parts Book from 1944 and a few other Detroit and Cleveland Diesel Parts Books from the 50's. Stewart & Stevenson Services in Harvey, Louisiana has a 1-71 on display in their lobby. We used to have a 4-51 on display, back in the 80's, but it's gone now.
As I understand, the 51 Series engines ran good at wide open throttle, but slobbered when run at a lower speed.
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ernie
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Username: ernie

Post Number: 897
Registered: 01-2002


Posted on Monday, November 17, 2008 - 08:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Andrew has a 51 series operators manual on marine engine dot com
Here is the link
http://www.marineengine.com/manuals/detroitdiesel/index.html
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seaguard
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Username: seaguard

Post Number: 3
Registered: 03-2007
Posted on Tuesday, November 18, 2008 - 03:40 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The pair of 4 51 GM engines my brother owns are only one number apart so must have been sold as a pair.Contary to popular belief,they run extremely smoothly at idle,rev very quickly,start instantly from cold, and
are hard to distinguish from a 71 series when running.These engines are almost unheard of in this country,although all other GM models seem well represented.I have seen two 1 71 engines,one on a factory genset,and one which was a Greymarine marine conversion, complete with Snow Nabstedt gearbox.The genset,along with a 2 53 genset were shown at local Rodeos and vintage engine shows,and actually used to provide power for caravans operated by vendors of hot dogs etc.
Several years ago I gave away a 110 series marine engine,(Rootes blower type),and it ws used as parts to rebuild a large Allis Charmers HD21(I think) tractor.
I know of one 12 V 53 series engine,(ex Viet Nam era, apparently,) and there is an 8 V53 in a fishing boat in our area.Goes very well too.
Seems such a shame to me that a great line of engines has been let die by General Motors,with no aparent attempt to update them.Maybe that is the reason that GM is in such trouble today.
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sherlock
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Username: sherlock

Post Number: 3
Registered: 11-2008
Posted on Tuesday, November 18, 2008 - 02:18 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Seaguard,..Tell me more about the 12V-53 you have seen or know about? I understand that they were only built by GM/Detroit Diesel, between 1965 to 1968. Even more rare are the 24V-71's that were only built in 1998,..Anybody seen one of those?? The reason GM stopped building all these 2 Cycle Diesel Engines, starting in the early 90's and the last one in 1998,..was the Emission Regulations, by California to start and Fuel Consumption, plus noise elseware. They are a very reliable engine and being 2 Cycle,..a 6-71 will run on 4 Cylinders if needed,...I have seen one with two hole's in two of the pistons from starting on ether and still go fishing! Lots of Blow-by and Oil everywhere,..but the fisherman got his catch for the day.
Two Marine 4-51's running here yet today, in a pleasure boat, built in the early 50's for a past Parker Paint Owner,..so glad to see that and I understand that there is a place in California, that can stiil "Flock" the Blower Rotors on the 4-51's.
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rparr
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Posted on Wednesday, November 19, 2008 - 11:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have three photos of a 24V-71T in a 1000 kW standby hospital generator in Louisiana.
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sherlock
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Username: sherlock

Post Number: 4
Registered: 11-2008
Posted on Wednesday, November 19, 2008 - 01:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

rparr,..
Any chance you could e-mail/attach the 24V-71T Pictures to me? I have never seen one and don't know how many were produced?
Thanks,..
sherlock
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rparr
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Posted on Wednesday, November 19, 2008 - 02:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

No serial number info shown prior to 1995. Serial number of first 24V-71 built in 1995 is 24VA1068. This site limits photo size to 60 kB max. Can't post!
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sherlock
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Username: sherlock

Post Number: 5
Registered: 11-2008
Posted on Wednesday, November 19, 2008 - 02:53 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

rparr,..Thanks anyway on the pictures of the 24V-71,..I'll just have to maybe come to the Louisiana Hospital to see it, or Maybe one will show up in the Northwest US,...
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sherlock
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Username: sherlock

Post Number: 6
Registered: 11-2008
Posted on Thursday, November 20, 2008 - 02:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

rparr,..Yey!,...I finally figured out how to open and see your pictures,..(had to use the Comcast Photo Center),..very interesting to see two 12V-71 Blocks bolted together and the Turbo's of course,..
Thanks,..
sherlock
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sherlock
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Username: sherlock

Post Number: 8
Registered: 11-2008
Posted on Thursday, December 11, 2008 - 11:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Yes!,..The find of my life!
A 2-51 GM/Detroit Diesel engine. We have been talking about never seeing one and it must of given me luck! I have posted a picture.2-51 Detroit Diesel
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Amos B
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Posted on Friday, December 12, 2008 - 12:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Cool... And it looks like it might be in good shape too. Where did you find it?
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ernie
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Username: ernie

Post Number: 917
Registered: 01-2002


Posted on Friday, December 12, 2008 - 03:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Can you post a pic of the oter side too?
Thanks
Ernie
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ernie
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Username: ernie

Post Number: 918
Registered: 01-2002


Posted on Friday, December 12, 2008 - 03:29 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Here is a youtube vid of a 4-51 running
http://www.youtube.com/watch?v=C2qYqMpCxKI
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seaguard
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Username: seaguard

Post Number: 4
Registered: 03-2007
Posted on Friday, December 12, 2008 - 05:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Don,t know a lot about the 12V53,except that it was apparently built for use by US armed forces in Viet Nam,and found its way to New Zealand.Dont know If it was intended for marine or vehicle use,but the one here is in a collection,not being used.
Re 51 series,early advertising data list these engines as marine,automotive,and industrial use,In fact the 4 51 automotive engine has air operated governor instead of mechanical type on marine units.Advertising brocures show a direct comparision between gas engine performance and 51 series repower in early 1950,s Ford and Chevrolet trucks.Engine was also intended as a powerplant for fork lift trucks.My brother was lucky enough to find a large collection of many early model Detroit engine brocures at a swap meet recently.Perhaps rarest brocure was 1 71 item.
How many of you older 71 series mechanics have come across 4 71 detroits with chain driven oil pumps? My brother is currently rebuilding a 1946 model 4 71 GM marine engine,and has come across this feature.
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jb_castagnos
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Username: jb_castagnos

Post Number: 424
Registered: 07-2002


Posted on Friday, December 12, 2008 - 06:51 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Enjoyed the video Ernie, as I've said before, Detroit Diesels were the most efficient means ever developed for turning diesel into noise.
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larry_from_maryland
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Username: larry_from_maryland

Post Number: 328
Registered: 07-2003


Posted on Saturday, December 13, 2008 - 12:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

On the oil pump if the engine were running in the oppisite direction a chain drive would let you use the same oil pump( turning in the same direction) as the gear drive moters.
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sherlock
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Username: sherlock

Post Number: 9
Registered: 11-2008
Posted on Sunday, December 14, 2008 - 04:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Amos and Ernie,..I found this 2-51 in a old warehouse, full of vintage GM/Detroit Diesel's and there it was,..sitting by itself up on the second shelf. I was in shock and total surprise and you guys brought me luck,..talking about all of us wanting to find one. I have attached a picture of the other side and you can see that the Blower is missing, but they left the Woodward Gov., sitting up on the F/W Hsg. Now I need help in finding a Blower with the Hyd. Gov. Drive on it, plus a Crankcase Breather missing also. Model # 23303,..Seial # 2C-3300. 2-51 GM/Detroit Diesel
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sherlock
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Username: sherlock

Post Number: 10
Registered: 11-2008
Posted on Sunday, December 14, 2008 - 04:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Seaguard,..I also have found a web site that talks about the GMC Transit Bus,..Model 51,..built in the early 50's,..that doesn't specifically say, but assume that they used the 4-51 Engines,.."Model TDH 5103 Bus",..you think so? The Web site: www.burlingtonreplicas.cpm/gmtdh51
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solarrog
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Username: solarrog

Post Number: 337
Registered: 03-2002


Posted on Sunday, December 14, 2008 - 04:32 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

This looks like an old rebuild, The paint is not worn off the pullys yet
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sherlock
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Username: sherlock

Post Number: 11
Registered: 11-2008
Posted on Sunday, December 14, 2008 - 05:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Seaguard,..Do you have any pictures, or can get some of the 12V-53, in the collection?
Also,..Does your brother have any old GM Diesel Brochures of the 51 Series Engine he found and would he be willing to sell them, plus the 1-71 also?
The Chain drive Oil Pump was also on the old 64HN9 Navy Marine Landing Craft 6-71 Engine's.
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sherlock
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Username: sherlock

Post Number: 12
Registered: 11-2008
Posted on Monday, December 15, 2008 - 01:11 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Soarrog,..Yes,..I agree that the 2-51 could be a old Rebuilt engine, because it was shelved in with all the 2-71 and 3-71 Rebuilt Detroit Engines. The owner was not pleased with his decision to sell the blower off the engine years ago. This 5000 Sg.Ft. warehouse in full
of 2 Cycle Detroit Engines and I am going to be busy Broker/Selling all the rebuilt 2,3 & 4-53's and a all Aluminium 6V-53!
2,3,4 & 6-71's plus 12 & 16V-71's also. Tons of spare parts and the owner is retiring at Age 82, (well, we will see) so I am going to be busy (part time), even though I am retired at 67. Love these 2 Cycle Detroits,..I have been repairing and selling parts for them for over 45 years.
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solarrog
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Username: solarrog

Post Number: 340
Registered: 03-2002


Posted on Monday, December 15, 2008 - 01:24 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

You would think these engines would be more valuable if put back to work rather than collecting them.?????
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sherlock
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Username: sherlock

Post Number: 13
Registered: 11-2008
Posted on Tuesday, December 16, 2008 - 12:52 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Correction on the Model & Serial #'s of the 2-51.
Model # 23300 and the Serial # 2C-207,. I was previuosly trying to remember the numbers, not writing them down,..# 207th engine built. Does anyone out there know how many 2-51's were built?
I have heard that they were only built in 1950 & 1951. Thanks
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enginenut
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Username: enginenut

Post Number: 11
Registered: 01-2005
Posted on Wednesday, December 17, 2008 - 08:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

This is not a good indicator of when they were made but in "Diesel Engine Catalog" number 22 of 1957-1958, the series 51 was listed and offered only as a 4 cyl and the series 53 was not mentioned.In the catalog number 24 the series 51 had disappeared and the series 53 was described as a new offering.I would like to see catalog number 23 but I don't have that one.
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enginenut
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Username: enginenut

Post Number: 12
Registered: 01-2005
Posted on Wednesday, December 17, 2008 - 08:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

PS; That catalog number 24 was dated 1959.
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sherlock
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Username: sherlock

Post Number: 14
Registered: 11-2008
Posted on Wednesday, December 17, 2008 - 10:20 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

A list of production years for the GM/Detroit Diesel Engines, that I found on a telusplanet.net Web Site,..list's the 51 Series Engines were producted from 1950 to 1959 and the 53 Series from 1957 to 1985. The 71 Series from 1938 to 1989 and I had heard from someone, that the 2-51 was only produced in 1950 & 1951, the 1-71 Only in 1938 and a question mark for 1939.
Most of the last production years were the mid 90's. The last 2 Cycle Detroit Diesel engines built was the 4-53, only in the year 2000 and probably for the Military. I just sold a 4-71TAE, that showed the production year of 1998.
I don't think I have seen the "Diesel Engine Catalog's", number 22, 23 & 24, that you mention? Do you have any spares available?
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Loveday Onyegam
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Posted on Saturday, January 24, 2009 - 01:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

we are looking for gear box twin disc 71 series detroit marine engine. other particulars include spec # 34931, model mg 52, ratio 4 decimal 087 decimal 1, serial # 307318.
Let me know asap if you have any info relevant to my enquiry. my number is +2348036710750
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sherlock
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Username: sherlock

Post Number: 17
Registered: 11-2008
Posted on Saturday, January 24, 2009 - 01:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Would the Model # be MG 502?
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Jan Vermeulen
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Posted on Monday, February 23, 2009 - 07:10 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I've bought a ship with a 3 cyl gm detroit diesel. assembly nr 5125123
gouvener type 6w-vs
Can annyone tell me is there information to find about this engine. I need to know the max rpm

greatings Jan
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sherlock
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Username: sherlock

Post Number: 18
Registered: 11-2008
Posted on Monday, February 23, 2009 - 12:31 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Jan,..You have a 3-71 Detroit Diesel engine and the 5125153 number is the Governor number for the engine. 6w-vs,.is actually S.W.V.S. (Single Weight Varible Speed) and the engine's maximum RPM is usually 2150 RPM No-Load and 1800 RPM Loaded. There is a Model and Serial # Stamped on a Machined area, normally the upper forward right side of the Block,..these numbers will tell me allot more of which configeration the engine is and early or late style Block,..etc.
Chuck
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jan vermeulen
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Posted on Tuesday, February 24, 2009 - 08:55 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Dear Chuck,
Thank you for the info, the block is heavy painted, so I can't see the model and ser,. number. but I need a propellar for this engine and now the shipyard kan look for the right one.
As soon as I find the numers I come back to you again in this forum.

Thanks . Jan
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Jan Vermeulen
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Posted on Friday, February 27, 2009 - 06:11 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hello Chuck,
Next monday I have be sure about the max. rpm. But I have to travel 200 miles to the ship to look at the serial nr. But I have an picture of it. Give's that more information for now ?.

Gr. Jan Gm Detoit diesel
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sherlock
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Username: sherlock

Post Number: 19
Registered: 11-2008
Posted on Friday, February 27, 2009 - 12:45 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Jan,..
Yes,..thanks to your picture,..you do have a 3-71RA (Blower Left and Exh Manifold Right side, looking from the rear of the engine),Marine Detroit Diesel Engine and they say that the (3) odd Cylinder engines run much smoother.
The normal loaded (In-Gear/Underway) RPM is 1600 to 1800 RPM. This also dependes on if you have a displacement hull or semi-planing hull also.
With a desplacement hull, you will probably fit into the 1600RPM area and also burn less fuel that way. Again,..No-Load (Out of Gear), the engine normally is set for 2100 RPM's but some are lower also. The ship yard is probably going to need to know your In-Gear RPM's, so they can figure out your prop size and pitch.
Good Luck!...Chuck
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sherlock
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Username: sherlock

Post Number: 20
Registered: 11-2008
Posted on Friday, February 27, 2009 - 12:49 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Jan,..
I forgot to mention that your Marine Gear box will have a factor in the prop size also,...on what gear ratio you have,..Example (2 to 1 ,or 1 1/2 to 1,..etc.
Chuck
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jan vermeulen
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Posted on Saturday, February 28, 2009 - 08:33 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Chuck, Thank you for the info, the gearbox has an plate on it with the ratio, so that's no problem, we can find a right propelor with your info,

Thanks again

Jan
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jan
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Username: jan

Post Number: 1
Registered: 04-2009


Posted on Saturday, April 11, 2009 - 01:50 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Chuck or others,
I find the right propellar and the schip sailes smouthly.
I have the following qeustions about the 3-71RA:
The engine will not start in cold condition (in the morning), is there a coldstart function ?
The temp. stay's on 65 celcius, is there an themostaat in the engine, so yes where can I find it?
the pcture shows an lever with an release, what is it ?




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sherlock
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Username: sherlock

Post Number: 23
Registered: 11-2008
Posted on Saturday, April 11, 2009 - 02:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

jan,..Glad to hear that you got thre right propeller. These early 3-71's are known for hard starting in cold conditions and you have two options: 1. Get a engine block heater and have it connected to Shore (120V, or 240V) Power, to preheat the engine overnight, or 5 to 6 Hours prior to when want to start you engine.
2. Spray can of Starting Fluid (Ether), just spray/wave into the Air Intake Silencer, while cranking over the engine,..Cation,..NOT to much, or you will put a hole in one of your pistons. The thermostates are located right in the back/top of your Heat Exchanger, in a Fresh Water elbow and there may be two states and you want to get the 170 Degree Thermostates.
Your lever looks like a Hydraulic release of some kind, back buy the Gear Box Hsg.right?
Good Luck,..Chuck
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larry_from_maryland
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Username: larry_from_maryland

Post Number: 343
Registered: 07-2003


Posted on Saturday, April 11, 2009 - 05:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The lever in the picture could be the emergency shut off, it closes the air intake in case of a runaway engine.
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jan
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Username: jan

Post Number: 2
Registered: 04-2009


Posted on Saturday, April 11, 2009 - 06:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Chuck and Larry,Thank for the answers,
I do use the spraycan . but I was hoping there was an other sulussion.
The lever is on the rightside of the engine in the front part.
I go look for the themostates.
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larry_from_maryland
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Username: larry_from_maryland

Post Number: 344
Registered: 07-2003


Posted on Saturday, April 11, 2009 - 07:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

It is the the emergency cutoff i can see this picture better. Its easy to knock the lever closed it is spring loaded. It takes 2 hands to hold the lever and set on the notch. There are things that might help starting like rebuilt injectors, resetting the timeing of injectors, ajusting valves, increaseing cranking power. It won't hurt to use small amounts of either.
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jan
New member
Username: jan

Post Number: 3
Registered: 04-2009


Posted on Monday, April 13, 2009 - 07:13 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Larry, I Think the engine needs an overhoul, becouse during an 8 houre journey, its used 2 liters oil. Also during running it smokes stronley (blue)from the exhaust. So I have an job to do next winter.I think it will solve the starting problem as well.
Thanks for the info

Jan
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larry_from_maryland
Senior Member
Username: larry_from_maryland

Post Number: 346
Registered: 07-2003


Posted on Tuesday, April 14, 2009 - 05:21 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

You can do an inspection of the rings and the air box by removeing the covers on the oppisite side from the picture you posted. If you have lots of oil (sludge) in the air box i would suspect bad blower seals. Turn the engine so you can see the piston and rings through sleeve holes. The rings have a grove in them the size of it left shows how much wear there is.
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jan
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Username: jan

Post Number: 4
Registered: 04-2009


Posted on Wednesday, April 15, 2009 - 04:51 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Do I understand it right ? By Blower you mean an mechanical forced air blower . well it is not on the engine. The oil preasuremeter show in cold condition 4.00 and when it is running about an half hour it's drop to 2.75 and slowing down to stationonaire it's show's a little bit more than 1. so how warmer the engine how less oilpressure. so I think the crankshaft bearing are gone as well ?
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larry_from_maryland
Senior Member
Username: larry_from_maryland

Post Number: 347
Registered: 07-2003


Posted on Wednesday, April 15, 2009 - 01:16 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The blower is what is in your picture. Right beside that little lever. You could have worn bearing too.
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KDiDP
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Posted on Wednesday, April 15, 2009 - 09:30 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Sunday, December 14, 2008 - 04:31 pm Sherlock said: "Seaguard,..I also have found a web site that talks about the GMC Transit Bus,..Model 51,..built in the early 50's,..that doesn't specifically say, but assume that they used the 4-51 Engines,.."Model TDH 5103 Bus",..you think so?"

The model 51 designation on that bus was for the nominal seating capacity. They did use a 71 series detroit diesel engine though.
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Floyd B Horn
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Posted on Sunday, June 07, 2009 - 02:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

}The 71 series can run at the 2150 rpm mark for maby 2 hrs safely and back to 1800 rpm. 1800 to 1850 continuous rpm recomended marine use. At 1800 rpm it will run all day long safely. Have run many 12V71 engines in towboats. The twin turbo models can run at highter rpms. The 51 and 53 series I never used. Not enough power. The 24V71 engines is actually two 12V71 engines coupled together.
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sherlock
Member
Username: sherlock

Post Number: 24
Registered: 11-2008
Posted on Sunday, June 14, 2009 - 02:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Anyone interested in my 2-51 pictured above and a 4-51 I have. I can send pictures,..
Retired now and want to travel, will loose storage warehouse if I travel.
Sherlock
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seaguard
Member
Username: seaguard

Post Number: 5
Registered: 03-2007
Posted on Tuesday, September 01, 2009 - 06:00 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

KDiDP.My brother has sales brochures showing 51 series conversion kits to fit these engines to Ford,Chevrolet,and GMC trucks of Fifties era.They are shown in Forklift trucks,and are touted as a direct replacement for Chevrolet and Ford six engines of that era.I suspect my brothers two engines are automotive types that were brought new and converted to marine by fitting Borg Warner Velvet drive boxes by adapting automotive type bellhousings.I feel that there were also two different types of governor,as my brothers engines governors appear different than some pictures I have seen of other engines.
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Charles Holmes
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Posted on Tuesday, September 01, 2009 - 11:40 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Interesting info on the 51 Series Conversion Kits and direct replacements. Most of the Marine Engines had the Marine Gear Box's mounted off of the front of the 51's. The 51 Series engines had a Vacuum actuated Governor, from the Intake Housing of the Blower, except for the Gen Set engines, with Woodward Governors, like my 2-51.
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sherlock
Member
Username: sherlock

Post Number: 25
Registered: 11-2008
Posted on Wednesday, September 02, 2009 - 12:06 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

My 2-51 and 4-51 are on eBay
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Ed Pinerock
Visitor
Posted on Tuesday, March 16, 2010 - 11:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have 1973 471 in a terex loader I last ran it late Nov 09 when putting away for winter.
Ran fine for several hours that day.
when I went to start it recently it cranks fine but won't start. If I pump the primer I get a sputter but no fire. A squirtof ether does nothing. seem like no fuel getting through. it would usually smoke while cranking before it started . now not even any smoke.
what should I be checking for ???
you can email me at pclc2007@aol.com thanks
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matt_morehouse
Advanced Member
Username: matt_morehouse

Post Number: 36
Registered: 12-2009
Posted on Wednesday, March 17, 2010 - 10:43 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I would check for varmints in the intake and exhaust. Usually in spring I find mice have taken up residence in the intake of my Massey Ferguson farm tractor. They must be evicted before starting. Also helps to let her sit in the sun for a few hours before trying to start.
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sherlock
Advanced Member
Username: sherlock

Post Number: 32
Registered: 11-2008
Posted on Wednesday, March 17, 2010 - 12:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Ed,..
Your 4-71 may have plugged Fuel Filters,..most the time it's the primary Filter, getting water in there, (mounted before the fuel Pump), but the Secondary (After the Fuel Pump to Injectors, could have some problems also. Change the fuel filters, than prime the system good,..these Jimmy's will not start without a good fuel system priming,..get a good steam of fuel out the return fuel line. (Back to the Fuel Tank)
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kingkumkee
Visitor
Posted on Saturday, January 22, 2011 - 07:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Daer sir,I purchased a pair of 4-T71 engines by mistake,now i jus realise that they are 2 stroke engines.Im going to put the pair in an australian randell 1984 cray boat 56 footer.This boat use to have a pair of Cat 3208 I think they are rated 300 hp plus.I have no intention of speed as im in the islands of Kiribati.I will use the boat for pleasure and ferry etc.I sther anybody knows about this engines are they reliable/engine consumption compared to cat 3208s.Any idea what sort of speed will I get out of this engines.I bought them inAustralia,the guy told me they are 330 hp each but looking at DD charts I think this engine is only 120 hp.maybe im caught but I just need information before I go ahead with the rigging

Thank you
King Kumkee
Kiribati Islands
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larry_from_maryland
Senior Member
Username: larry_from_maryland

Post Number: 447
Registered: 07-2003


Posted on Sunday, January 23, 2011 - 08:01 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

The engines are relieable and have been used for many years.A 471t would be 120 to 150hp and the 3208 would be 145 to 210.The 3208 is a higher speed engine at 2800 verses 2100 for the gm.The thing is the gm engines are out of production because they can't make the emmission standards.People are thinking that parts will eventually be harder to get.I still have 4 gm engines myself, but they don't get much running anymore.
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abacost2141
New member
Username: abacost2141

Post Number: 1
Registered: 03-2011
Posted on Sunday, March 06, 2011 - 04:57 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hello 2 cycle fans...just bought a 1-71 GM (Detroit Diesel) that is zero houred and never started. Now I need a manual...can anybody help out?

dlwithington@gmail.com}
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jimmys
New member
Username: jimmys

Post Number: 3
Registered: 01-2011
Posted on Monday, March 07, 2011 - 03:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Congradulations on the 1-71 Find and Purchase,..is it just the engine, or with the Radiator and or Generator etc.? Can you attach pictures of it? I have two in the area, that the owners will not part with, but still working on them...I have a 1939 Parts Book for One, but have not seen a Service Manual for one. I have found 51 Series Manuals on the "GM Diesel" eBay listings....You can see my 2-51 Pictures find abouve...Chuck
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ibsmunish2011
New member
Username: ibsmunish2011

Post Number: 1
Registered: 03-2011
Posted on Monday, March 28, 2011 - 01:33 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

A diesel engine (also known as a compression-ignition engine and sometimes capitalized as pure powerful engine ) is an internal combustion engine that uses the heat of compression to initiate ignition to burn the fuel for moving fast drive and powerful drive
Automative parts http://www.hellotrade.com/business/automotive-parts
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johnoxley
Member
Username: johnoxley

Post Number: 20
Registered: 04-2010
Posted on Monday, March 28, 2011 - 06:06 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I remember 20 plus years ago saying the sound of a 6-71 with Twin Disc gearbox would one day be nostalgic. These engines were once the only power installed in tugs and trawlers on Sydney Harbour. Prawn trawlers used them because you could take a 1/2" pipe from the airbox and run a kerosene burner and cooker, enabling cooked prawns for market before berthing. Recently saw on Foxtel a vet driving a restored WWII landing craft with 6-71 power (teary moment). 6-71 should be up there with the RR Merlin.
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Karen Letch
Visitor
Posted on Friday, June 03, 2011 - 10:44 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I am trying to track down a service or operators manual for DD 671 Grey Marine engine. We have 2 in a 1941 Patrol Boat that we have had for 25 years but have misplaced manuals. Any help would be greatly appreciated...
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RhondaWells
Visitor
Posted on Tuesday, September 20, 2011 - 11:58 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have two Marine Detroit Diesel engines for sale a
4-53 and a 4-71 very old looking. Contact me if interested Misspuff@mail.com
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Jack Kimmich
Visitor
Posted on Tuesday, September 20, 2011 - 03:34 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have a 4-51 and a genset ith a 4-71, Genset has only 980hrs on it. Great running engines.

Contact me at dirtdoctorjak@aol.com
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jimmys
Member
Username: jimmys

Post Number: 8
Registered: 01-2011
Posted on Wednesday, September 21, 2011 - 01:56 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Can you send me pictures of your 4-51 and the 4-71 Gen set? Can you attach them to a e-mail to me?....cnancompany@cnancompany.com
Thank,
Chuck
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jimmys
Member
Username: jimmys

Post Number: 9
Registered: 01-2011
Posted on Wednesday, September 21, 2011 - 02:04 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Ronda Wells,..
do you still have the 4-53 and 4-71 Marine Engines for Sale?
Can you send me Pictures, attached to a e-mail?
cnancompany@cnancompany.com
Thanks,
Chuck
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Dheier
Visitor
Posted on Monday, October 24, 2011 - 01:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have 1-71 complete, less starter, unit is rebuilable, I have never seen it run, I have a Owner manual and parts books as well.
Any offers???
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wozy
New member
Username: wozy

Post Number: 1
Registered: 01-2012
Posted on Saturday, November 17, 2012 - 09:05 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have a 4-51 bloewerin good shape am willing to sell .also a51 series manual,1-71 parts and service manual.alot of other DD stuff.
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nobby
Member
Username: nobby

Post Number: 16
Registered: 12-2005


Posted on Sunday, November 18, 2012 - 08:41 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Wozy email sent to you.
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jimmys
Member
Username: jimmys

Post Number: 30
Registered: 01-2011
Posted on Sunday, November 18, 2012 - 02:15 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Wozy,..I'm interested in your 4-51 Blower and the other DD Stuff,...what are you asking for the 4-51 Blower?
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Allan Gustafson
Visitor
Posted on Saturday, December 15, 2012 - 12:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Wozy, I need a blower to get my 57 Adams 220 road grader operable. You may contact me directly at "gustafsonal@hotmail.com". Thanks. Al
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jimmys
Advanced Member
Username: jimmys

Post Number: 36
Registered: 01-2011
Posted on Thursday, May 16, 2013 - 07:17 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Any one out there recognize this GM Air Intake Housing ? I compared it to a 4-71 and 6-71 and Mounting Hole BC's are (10 1/2" X 4 5/8"),..it is in between the 4-71 and the 6-71,..I even thought it might have been for a 4-51,..but the pictures in my 51 Series Manual shows no External Air Intake Housing. The casting GMC Part # is 2386406.Air Intake Housing
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jimdereynier
Senior Member
Username: jimdereynier

Post Number: 80
Registered: 08-2007
Posted on Friday, June 07, 2013 - 09:50 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Need a Fly wheel with ring gear for a Detroit diesel 271. Model 2046, s/n 2AG76939.
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nobby
Member
Username: nobby

Post Number: 25
Registered: 12-2005


Posted on Friday, June 07, 2013 - 12:12 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Try these folks:
http://www.fbmtrading.com/Default.asp

Very helpfull and reasonable with a good stock of used spares.

Cheers
Nobby
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jimmys
Advanced Member
Username: jimmys

Post Number: 38
Registered: 01-2011
Posted on Friday, June 07, 2013 - 02:03 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I discovered that the GM Diesel Blower Intake Housing I showed earlier is for a 6"V"-71 GM Diesel and was probably used on the 6V-71 Sideways/V-Drive Coach/Bus Engines and possibly for the COE (Cab Over Engine)Trucks, due to the low profile design of the Housing for clearance. I have it on eBay right now for sale.

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