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Radiator overflow ???? what are you running?

jimbosride

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65 Dodge 383 mild build. Running a Flowkooler pump and a aluminum radiator. Car runs great ,180 to 200 degrees ..... About 600 miles on the engine. If I top off the radiator
it will puke some coolant when I park it. Maybe a cap issue ....or do I not fill radiator to the top?....or overflow bottle ??




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Fill just over the core.
The water expands when heated, has to go somewhere.
The core is what does the cooling not the upper tank.

Awesome car :thumbsup:
 
That's what I thought ..... last summer I ran it without the puke .... but topped it off before winter storage.

:moparsmiley::rolleyes:
 
Dorman part. From Summit. I think it's a Mitsubishi application.

Keep in mind having a coolant recovery keeps air out of the cooling system. No air reduces oxidation.

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It's crazy how they developed that cooling system to work as designed.
 
Dorman part. From Summit. I think it's a Mitsubishi application.

Keep in mind having a coolant recovery keeps air out of the cooling system. No air reduces oxidation.

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That looks like the one I have in the GTX.

In my 62 Belvedere, I welded up a 10" section of 2-1/2" exhaust and use that as an overflow tank.
 
There are tons and tons of clear plastic expansion tanks available these days. I just grabbed one from a new car that fit pretty well and built a little bracket for it.

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For many 66-70 B bodies, the 73-76 A body overflow jug fits and works quite well.
 
I lowered the water level to see what happens. I think that may do it.

Thanks for the info. :thumbsup:
 
You need to get the right one for your needs. Some are just overflow and do not allow returning of the fluid back to the radiator. A recovery style allows the fluid to return to the radiator. Some caps will not work correctly with recovery systems.
 
Manual says 1" below bottom of filler hole. I fill to there, "if" it pukes a little, then it was a touch high. I run flowkooler, aluminum radiator in 496" in 125° weather w a/c. By filling 1" below opening, I've never had an issue.
 
Mobil1 Oil bottle...rinsed well of course. Fits perfectly in the space.

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I found a nice spun aluminum tank, it even came with a tig welded aluminum bracket. Just turn the Schwinn logo to the backside. LOL

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Universal O'Reilly's tank. Zip tie in place.

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