Yanmar 2gm20f heat exchanger - SailNet Community

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Go Back   SailNet Community > On Board > Gear & Maintenance > Engines > Diesel
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Diesel This is a forum dedicated to diesel engines and their applicable accessories.


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Old 04-10-2013
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Yanmar 2gm20f heat exchanger

I just want to know how to reinstall the core heat exchanger. One side has two holes, on the shroud, and the other only has one. I just want to know which side goes towards the front of the engine, the side with two holes or one?

Any help would be greatly appreciated.

Thank.
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Old 12-18-2013
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Re: Yanmar 2gm20f heat exchanger

Interesting problems:
I took my core out and took it to my local rad shop for cleaning.
Well he cleaned off the aluminum shroud like he dissolved it. No shroud any more
1000+ for a new one. Will the core work OK without the shroud.
Or
Maybe replace the shroud, where do the holes go?
What size are they
Anybody have some pictures of a 2gm20f core,
anybody ran a core without a shroud.
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Old 12-19-2013
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Re: Yanmar 2gm20f heat exchanger

thats the problem with having "shops" do it

a vinegar bath in place after running would of done wonders without even taking it completely apart

when I did this on my 2gm I did not take the exchanger off, and when cleaning I used mild cleaners and vinegar baths in place...then painted and called it good

Im sorry this happened to you...

I beleive the innards need to be complete for flow to be correct...
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Old 01-03-2014
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Re: Yanmar 2gm20f heat exchanger

Have you ever had your core out? I am looking at repairing mine and have found a shop who can redo the aluminum sheath. Still I am not sure how many holes are in the sheath and what is the diameter of same holes.

Quote:
Originally Posted by christian.hess View Post
thats the problem with having "shops" do it

a vinegar bath in place after running would of done wonders without even taking it completely apart

when I did this on my 2gm I did not take the exchanger off, and when cleaning I used mild cleaners and vinegar baths in place...then painted and called it good

Im sorry this happened to you...

I beleive the innards need to be complete for flow to be correct...
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