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post #1 of (permalink) Old 02-27-2002, 12:13 PM Thread Starter
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Plastic radiator tank !!

I noticed the top plastic tank on my radiator appears to be leaking. Can it be fixed? Is it worth fixing? Should I just swap to a brass unit? Anybody been through this? It's a 97 tj 2.5L 5-speed.

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post #2 of (permalink) Old 02-27-2002, 01:45 PM
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Re: Plastic radiator tank !!

AFIK aluminum and plastic radiators are throw away. Once they start leaking you replace them. You can probably get a new one from for a decent price.

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post #3 of (permalink) Old 02-28-2002, 04:32 AM
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Re: Plastic radiator tank !!

Yep, we had ours let go as well, started leaking from the side due to wheeling stress. We had ours replaced under warranty (extended at about 85K), so I have no idea as to what a new one costs.

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post #4 of (permalink) Old 02-28-2002, 07:27 PM
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Re: Plastic radiator tank !!

it's most likely a glass filled nylon, and stuff don't stick to it.
the only other way is to replace the tank. you MAY
find a rad shop to replace it. it weakens the tabs, so
they may not touch it.

when in doubt.........
empty the magazine.
post #5 of (permalink) Old 02-28-2002, 08:11 PM
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Re: Plastic radiator tank !!

I had the same problem in an 89' Cherokee. If the tank is leaking where it joins the core, chuck it and buy a new one. I bought a three row (brass) for the Cherokee and was quite pleased. It wasn't the best in the world, it was a Checker lifetime warranty unit, and I never had a bit of trouble with it in the 20000 miles that I drove it.
I did one time accidently crack a tank on a Honda Civic when I was replacing the alternator. I took some emory cloth and gouged out the crack and filled it with some stuff called quick steel, and to my knowledge, it went another 100k that I know of, and last I knew was still running. The quick steel is a metal impregnated epoxy. I have found that it stands up to high temperature a lot better than JB Weld. All in all, I am not that impressed with JB Weld, but the quick steel has performed quite well in numerous conditions, even exposure to gasoline.

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