TO-20 radiator leak

jhwis · Mar 20, 2017

I got a small leak somewhere in the radiator...can't tell where. Besides getting it recored, I was thinking about using some Stop Leak from Bars. I used it on my truck years ago and it worked well and stopped the leak. What do you guys think?

Kirk-NJ · Mar 20, 2017

I have one in NJ. Email is open.

Kirk

Steve Mason · Mar 22, 2017

mine had a small leak at the top and the side's were starting to separate. Took it to a local radiator shop and he redid the thing for me for $128.
I was a bit taken back by the price but he did a really nice job. And the old radiators, if they can be fixed, are way better than the new aftermarket ones.
(Or so I'm told by the radiator repairman)
I thought about the stop leak thing and it sure would have been cheaper but now I know I've got a good strong radiator.

Kirk-NJ · Mar 22, 2017

Glad to hear you got it done

pcp20us · Mar 22, 2017

If it was mine, I would take off the rad and find the leak, clean the leak up and solder up the leak.

Charles in Aus. · Mar 23, 2017

This is what Bars Leaks does to the inside of your radiator !

If you have an old radiator cap and can be bothered try this trick of mine .
Drill a hole in the top of the cap big enough to force a tubeless tyre valve stem into it far enough to seal reasonably well and still allow the cap to close . Then just do as the radiator guys do and use a small bike or hand pump to put a few psi into it .
Once the leak is located you can either solder it or crimp off that particular tube completely.

TO-20 radiator leak

jhwis

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Kirk-NJ

Well-known Member

Steve Mason

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Kirk-NJ

Well-known Member

pcp20us

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Charles in Aus.

Well-known Member

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