| Author |
Message |
    
john greenup
Visitor
| | Posted on Friday, September 09, 2005 - 10:50 am: | 
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Need a head gasket and an oversized piston and rings for a PW-27. Does anyone know a place to find of have these made? |
richardday
Senior Member
Username: richardday
Post Number: 455
Registered: 11-2003
| | Posted on Friday, September 09, 2005 - 05:36 pm: |
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For rings go to Dave Reed at otto@dol.net For a compressable copper head gasket that will probably have to be made. Try 1.
F.H. Gaskins Co., Inc. This company makes copper head gaskets.
25th & Church St.
Norfolk, VA.
Tel 757-622-4706
Fax 757-623-2317
Or
F.H. Gaskins Co., Inc.
4 Nashua Ct. Unit 3
Baltimore, MD.
Tel. 410-686-1800
Fax 410-686-5184
for an oversized piston. The PW-27 standard piston is Wiconsin model AFH so try any Wisconsin dealer. Don't talk PW-27 talk Wisconsin model AFH. |
johngreenup
Visitor
| | Posted on Thursday, September 29, 2005 - 09:46 pm: |
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Richard,
Help...
I will also post this question to your EMail address.
I took your advice and got an oversized Wisconsin AFH Piston for my PW-27 per the note in your book and prior Email. The AFH manual calls out piston DB-160-D and DR-7 rings. The only thing correct about the piston is the diameter. The wrist pin size, deck height and skirt length are wrong. I.e. totally unusable.
Normally Wisconsin parts have the part number stamped on them. I checked inside the piston in my PW-27 and there is no part number. Is it possible that the piston is not from a AFH but a custom part by Palmer or else another Wisconsin part.
The AFH went out of production before the PW-27 went into production. The AFH was not replaced. There was a model S10 with the same bore that was in production about the same time as the PW-27.
Thoughts???
John |
johngreenup
Visitor
| | Posted on Thursday, September 29, 2005 - 09:49 pm: |
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Richard,
The Palmer PW-27 con rod is a DA-49-A. This might help.
John |
richardday
Senior Member
Username: richardday
Post Number: 456
Registered: 11-2003
| | Posted on Saturday, October 01, 2005 - 08:38 am: |
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John, I am working the problem and hope to have a answer within a couple of weeks. Raynal Bolling the CEO and Chief engineer of The Palmer Engine Co. told me they cut a deal to use the Wisconsin AEH block with the AFH piston to get more cu. inch displacement. I have not ever questioned Ray's guidance as he was a very thoughtful and knowledgeable man. I will open up a PW-27 in a couple of weeks and see what I find.
When you say the PW-27 con rod is a DA-49-A does that mean it is a Wisconsin number? If it was a Palmer forging I would expect to see Palmer's name with the number. Sorry about the confusion will try to figure out what the solution is. How oversize is you cylinder bore? |
johngreenup
Visitor
| | Posted on Saturday, October 01, 2005 - 09:00 am: |
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Richard, Thanks for the reply. The DA-49-A is the wisconsin part number for a AEH con rod. Wisconsin parts have the part number cast in. If you have a chance to take out a PW-27 piston and it is a real wisconsin part then it will have the part number on it.
I need to overbore the engine to .010 as the compression is low and I can't get the engine to idle and it is hard to start.
My problem is I have promised the launch to a friend to use as a committee boat for the Head of The Charles Regatta in three weeks and need a solution ASAP.
John |
richardday
Senior Member
Username: richardday
Post Number: 457
Registered: 11-2003
| | Posted on Saturday, October 01, 2005 - 06:27 pm: |
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Have you checked the valve clearances? That is often the real problem. ex .008 cold, intake .006 cold. |
johngreenup
Visitor
| | Posted on Monday, October 03, 2005 - 10:38 pm: |
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Dick, Looks like the piston may be a DB-210-1 from a TH, THD and TJD engines. Will confirm, John |
richardday
Senior Member
Username: richardday
Post Number: 459
Registered: 11-2003
| | Posted on Tuesday, October 04, 2005 - 09:09 pm: |
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Thanks John looking forward to what you may find. |
richardday
Senior Member
Username: richardday
Post Number: 471
Registered: 11-2003
| | Posted on Saturday, October 22, 2005 - 10:35 am: |
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I have been given a used piston from a PW-27 On the inside rim at the skirt, not near the bore for the pin it says Wisconsin DB-210. I have a PW-27 con rod which is forged with the following. DA-49 ?. The ? means I cannot read what ever was there.
I should add it took me a long time to find the piston marking as I was looking at the markings near the pin. One of which clearly says Alcoa. the others really are impossible to read.
The con rod has Y4 inverted forged ahead of the DA-49. I wonder if that is the identity of the company that actually forged the con rod for Wisconsin.
Some years back I had a telephone converation with the Wisconsin company historian and much to my surprise he told me Wisconsin never did have their own foundry which explains the UF logo of Universal on Wisconsin castings. |
johngreenup
Visitor
| | Posted on Monday, December 19, 2005 - 11:24 pm: |
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Finally got the PW-27 to idle correctly by rejetting the carb. I increased the size of the idle jet and now it starts and runs very nicely. |
patrick henry hague
New member
Username: patrickhenryhague
Post Number: 1
Registered: 07-2007
| | Posted on Monday, July 23, 2007 - 06:53 pm: |
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I just acquired a 17' Cape Cod Dory it has a Palmer 27. It also only has 55 lbs compression and the crankcase had some rain water in it, water came in through the bilges, only went slightly above the oil fill tube. The mag doesn't spark I can get that fixed. The question is will it run with only 55 pounds of compression? And where can I find the neopreme impeller blades that I'll need? |
Shawn McCoy
Visitor
| | Posted on Sunday, January 25, 2009 - 09:47 pm: |
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Richard,
My PW-27 is going to be used around Salt Water. I realize that Salt isnt the best thing for these engines bases on the articles I have read. Is it possible to design a system for a PW-27, where I wouldn;t have to use Salt Water for cooling. |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 709
Registered: 11-2003
| | Posted on Monday, January 26, 2009 - 09:49 am: |
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The Chesapeake Bay watermen for years made simple keel coolers out of 1/2" or 3/4" copper pipe. Run a length up one side of the keel rubbing strip make a U turn and bring it back to a thru hull. The idea being to pump jacket 50/50 anti freeze and fresh water for cooling the water jacket. Use a dry exhaust or if wet exhaustis needed add a sea water pump to cool the exhaust line aft of the engine. They would take a short lengthe of copper pipe about 1-1/2 to 3" diameter roughly 18" long braze a copper pipe cap to one end. Use a second pipe cap as a removable cap to fill the vertical pipe as an exspansion tank and reservour for filling the system. Bore a smal vent hole in this cap. The hot water from the engine block down the U tube along the rubbing strip and the cooled water back to the pump with the exspansion tank simply tied into the return line. Works great and a lot cheaper than the factory product. Just takes a little common sense. Don't worry about painting the U tube with anti fouling paint won't really have any significant effect on the cooling of the jacket water.
Best I can offer. |
Shawn McCoy
Visitor
| | Posted on Monday, January 26, 2009 - 11:10 am: |
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Thats good to now. I looked up some formulas and figured i'd probably need a 10' piece of copper pipe 8 Hp X .30 sq ft per hp = 2.4 sq ft. Then I take that 2.4 and divide it by the per foot surface area of the pipe. I uses 1" dia. so .26 sq ft. Does that sound right? Do u have a diagram of a expansion tank? or even a diagram of the entire system? |
Richard A. Day Jr.
Senior Member
Username: richardday
Post Number: 710
Registered: 11-2003
| | Posted on Monday, January 26, 2009 - 03:53 pm: |
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Sorry, No diagram. You can look at the heat exchanger for the Palmer P-60 under topics and it will show you a factory approach. The typical Chesapeake Bay waterman couldn't afford any high prices solutions. They are just good shade tree mechanics. Just use your imagination for the expansion tank it aint rocket science. Good luck Dick |
