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Closed cooling for a Blaxland.

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Seadog Butler
Visitor
Posted on Wednesday, November 17, 2004 - 12:24 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I have two Blaxland twins rebuilt by Aub Rose and am becoming a bit concerned over continuing notes on this site about water jacket build up and corrosion. I know they have lasted a long time already but just in case I would like to run one in the putt putt with a keel heat exchanger and a closed cooling circuit based on an atmospheric header tank above engine height The cooling water being pumped into the jacket from the heat exchanger. Does anyone out there have any experience in setting up this type of cooling. I really would appreciate communicating with you. Also does lack of water into the pong box have any detrimental effect. Thanks in anticipation;
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timmulvey
Senior Member
Username: timmulvey

Post Number: 122
Registered: 05-2003


Posted on Wednesday, November 17, 2004 - 05:53 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

I've done some research as I want to set up something similar for my Stuart but have come across an engine mounted heat exchanger that was set up for a Blaxland by Jim Broadley. He trades as Diablo Motors, 212 Haldon St., Lakemba (in Sydney, Aust.) or telephone him on 9759 1328. It was on display at the 2003 Davistown Regatta and at the 2004 Wooden Boat Festival in Sydney.

Also, he has a range of marinised manifolds and heat exchangers for US sourced engines inc. Chrysler, Dodge, Detroit etc as well as specialising in anything for authentic restoration and performance enhancement/hotting up of such engines.

He can organise to get something made up for you. If you have any problems contacting him just email me.
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blaxland_guru
Member
Username: blaxland_guru

Post Number: 5
Registered: 07-2002


Posted on Saturday, April 23, 2005 - 10:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Tim,

The motor you seen was in fact built by Boyd Myers of Davistown NSW, he is a good friend of Jim Broadley and infact, Jim had him build the motor and supplied the "heat exchanger" for the cooling. It required the fitting of an additional water pump to the rear of the motor to circulate the 'sea water' for cooling, whilst the original pump circulates the 'coolant' through the motor...

Here are a few pics of the motor in question to give an idea of the work required for such a modification...

Intercooled Blaxland Twin





If anyone require's further info, you will find Boyd's phone number in our profile...

Regards,

Barry A
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timmulvey
Senior Member
Username: timmulvey

Post Number: 146
Registered: 05-2003


Posted on Sunday, April 24, 2005 - 06:07 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Barry,

You are a little slow in responding - 6 months? Perhaps you should reread my posting. I know Boyd built the engine. The point of the message was about where to get heat exchangers (such as that one Jim did for the Blaxland) and marinised manifolds.

You don't need an excuse to post your pictures of the engines - as we are always glad to see works of art.
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richardday
Senior Member
Username: richardday

Post Number: 387
Registered: 11-2003


Posted on Sunday, April 24, 2005 - 06:09 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Keel coolers were widely used aroung the Chesapeake Bay by watermen and they used a very simple system that any semi skilled mechanic can employ. The system is simplicity in the extreme and about a cheap as one can go. Two copper 3/4" water pipes are run about full length of the keel rubbing strip. At the bow end the piping makes a U turn through the rubbing strip. at the aft end the two pipes pass through the bottom of the boat and connect to the water pump inlet and and the jacket water outlet. A T is inserted in the outlet prior to the connection to the thru hull for the keel pipe. The T simply connects to a small vertical exspansion tank made up from approx 1-1/2" to 2" Dia copper pipe with a removeable copper pipe cap. The cap has a small hole for atmospheric breathing and the mixture in the circulating water is 50:50 fresh water and automotive anti freeze. The heigth of the expansion tank is a a couple of inches above the top of the cylinder. If one wants a wet exhaust then an additional sea water pump is required for pumping water down the exhaust line.
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peterogborne
Senior Member
Username: peterogborne

Post Number: 244
Registered: 09-2002
Posted on Monday, April 25, 2005 - 07:27 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

It is good to know we have subscribers like Richard ....no fancy bullshit photos just good solid information. So Sea dog go for it . I made a heat exchanger from some nice brass windmill pump cylinders . My engine is not in a boat so i can not vouch for it's sea going performance. I used a small gear pump ,chain driven from a sprocket ''sandwiched'' between the prop shaft coupling.
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Seadog Butler
Visitor
Posted on Saturday, April 30, 2005 - 07:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Thanks to all for your info.I am in the process of finalising a keel heat exchanger much as described by Richard. I enjoy looking at the hot Blaxlands built by Boyd Myers and his setup with the header tank is as I picture mine will end up.Also thanks for the idea of an additional pump to cool the exhaust. I have a small Jabsco which will run nicely off the dynamoter V belt pulley on the flywheel. Not using the dynomoter as I believe it puts too much load on the front main bearing.
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blaxland_guru
Member
Username: blaxland_guru

Post Number: 6
Registered: 07-2002


Posted on Wednesday, May 11, 2005 - 07:31 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Tim,

Sorry mate, didn't mean to bite so hard, just when I read your post it kinda gives Jim the credit for the build of the motor and not Boyd... When you see how much care and attention to detail Boyd gives these great little putter's then I'm sure you would understand my point of view....

Yep, can see the point of your post now, they do seem a little expensive for what they are and run well up over the $300 - $400 range but I guess it is added insurance for a new motor...

Don't get on the site as often as I should, new job, new relationship etc has all played a part, just like to jump on every now and again to have a look around and keep people up-to-speed with Boyd's latest projects....

Regards,

Barry A
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blaxland_guru
Member
Username: blaxland_guru

Post Number: 7
Registered: 07-2002


Posted on Wednesday, May 11, 2005 - 08:29 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)


quote:

....no fancy bullshit photos....




Bit harsh don't you think Mr Ogborne...?

I'm sorry you don't like my pics and I'd be very interested to know what you don't like about them if you would care to explain.....?!?!?!?

For those of you who do enjoy them, this is Boyd's motor for his new boat he has had built...



and another....



and this is his new boat, 18'6" clinker and the craftsmanship and detail has to be seen to be believed...... It was built in Queensland by a friend of Boyd's....



....another....



This has been a long time coming, after spending many years fitting out boats for other guys and see them go on to take out major places at the Davistown Regatta, Boyd has finally put aside his other work to finish his is own boat...

I'm sure it will be the quickest putter to take to the waterways when it's finished and he begins competing in various regatta's....

I'd be happy to post more for those of you who would be interested and if you don't like my pics then I would suggest you not bother to view or comment....

Regards,

Barry A
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puttera
Visitor
Posted on Thursday, November 27, 2008 - 09:54 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

YOU SHOULD GET YOUR FACTS STRAIGHT blaxland_guru!!
AND DONT USE SCAPEGOATS TO EXCUSE YOUR INABILITYS GET A LIFE OR AN INTEREST THAT YOU ACTUALLY KNOW THE FACTS ABOUT MR MJR TSR!!
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Roger DiRuscio
Senior Member
Username: solarrog

Post Number: 334
Registered: 03-2002


Posted on Thursday, November 27, 2008 - 09:59 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

puttera
no more turkey for you, you get mean
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David Myers
Senior Member
Username: dave_myers

Post Number: 55
Registered: 11-2006


Posted on Thursday, November 27, 2008 - 11:02 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Geez! What brought that on? It has only been 3 years since the photos were posted....
Maybe puttera is Jealous!

Dave
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Tina Acton
Visitor
Posted on Thursday, August 29, 2013 - 08:22 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hi know this is an old post but thought id try anyway is Jim Broadly still working in the trade as i really need to find a water cooled manifold for my moter and am having trouble finding the right one appreciate any help thanks Tina email me at tinaact@hotmail.com if you can help thanks again
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Todd Vidgen
Senior Member
Username: todd_vidgen

Post Number: 243
Registered: 03-2008
Posted on Thursday, August 29, 2013 - 10:41 pm:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

No He's not.
If you look closely you will see that the manifold
itself is not cooled,just the muffler box (with sea
water)Both are standard items(Jims motor)
Boyds motor, which is in MV Allwood is not fresh
cooled,but the "extractors" are wet sleeved.
And man they took sometime to make ,and about $300.00 of copper elbows and fittings
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neil r jones
Senior Member
Username: senojn

Post Number: 109
Registered: 08-2006
Posted on Saturday, August 31, 2013 - 06:48 am:   Edit Post Delete Post View Post/Check IP Print Post    Move Post (Moderator/Admin Only)

Hello Tina ,
You do not explain what motor you are referring to ! Do we presume?
Do you understand what Todd is saying ?

'And man' ???

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