Reply to "Question about expansion tank cap"

rockyMember

In my stock system, the expansion tank wasn't pressurized, and the cooling system blew and sucked through the radiator cap which was mounted on the swirl tank.

The cap I had on my original expansion tank just had a flat gasket. The cap had no springs, or any of the other "accoutrements" that a pressurized cap would have.

Carroll Smith only suggests one configuration in "Race to Win"... This is the same diagram George posts in his cooling system sticky.

Wouldn't having a lower pressure cap on the expansion tank effectively lower the pressure on the whole system (if you modify the system per the drawing below).....

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3/15/157:25 PM

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