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-   1958 To 1960 Squarebirds - General Technical Discussion (http://squarebirds.org/vbulletin/forumdisplay.php?f=14)
-   -   Radiator cap pressure rating??? (http://squarebirds.org/vbulletin/showthread.php?t=5913)

KULTULZ 01-27-2009 03:07 PM


Originally Posted by bcomo (Post 28135)

I wanted to add something about the purpose of a radiator cap.

The purpose of a radiator cap is to raise the boiling point of the water/antifreeze mix.

This is 100% correct. If one is concerned that the correct pressure cap will blow out the cooling system, it is time to perform a little service.

Additionally, the purpose of 7# caps was in the days of using either water or an alcohol based coolant. On this time period systems, it will not only cause spitting but will ingest air on the intake, creating air pockets and creating even more problems.

The AC radiator cap being correct for this period is interesting. I always cringed from anything not marked FOMOCO.

tbirds8 01-27-2009 07:42 PM

I know the 7lb isn't going to work in the summer. It will start spitin up. but I bought this car on flebay with a stuck motor and everybody gave up on it. From a ford dealer no less. Has 80000 on it and runs FINE. Been sitting since 1977. Took a little playin with it but you wouldn't believe how this car runs and everything works. (no clock). It's a 66. I think my 60 will run it down. But then I have figure out how to stop.

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