Heat Exchanger for my Sundancer

[Dave Glommen]

I have raw and coolant water mixing and I believe I have a defective exchanger. Where can I find one to fit my boat? It mounts to the top of the intake at the thermostat. Water passage goes from there into the bottom of the heat exchanger, then hoses from there to other points on the engine

 

[hughespat57]

You need to provide full model and serial number of engine to get a useful answer.

 

[Dave Glommen]

So what if its not the motor that came in the boat originally? When I got the boat the block was cracked and it now has a different 5.7. All the bolt on parts are the same as any other 5.7. If I a

You need to provide full model and serial number of engine to get a useful answer.

 

[scoflaw]

Gen1 sbc are all the same.
Call any of those aftermarket places like Mr. Cool etc., they use the Merc exchanger as a proto type, all your hoses will fit

 

[keokie]

San Juan is another manufacturer that can help.

 

[mrsrobinson]

Join today, post today, gone tomorrow...

 

[hughespat57]

Gee here we go with the 20 questions
If its all the same hang ons the Mercruiser serial number is still valid for parts look up. Not the block serial number.
No photo
No details
But give me the right part for a “350”
Like Mercruiser has used the same accessories for the last 30 years.
Is it full cool or half cool? Do you understand the difference?