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Author: Subject: zetec ally expansion tank rad cap??
simon04

posted on 31/1/21 at 10:13 PM Reply With Quote
zetec ally expansion tank rad cap??

Hi all
this weeks question is what pressure rad cap will i need for my expansion tank
im using a brand new 2/0 zetec black top
the expasnsion tank is made from ally and has the normal push down 1/4 turn metal radcap


Thanks
Simon

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big_wasa

posted on 1/2/21 at 06:23 AM Reply With Quote
Mine is a Stant 10334 18psi.
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cliftyhanger

posted on 1/2/21 at 08:55 AM Reply With Quote
Not too critical, anything 13-20psi ish will work.
a 13psi cap increases the boiling pt of water by about 20 degrees. Bear in mind 50:50 antifreeze does something similar, you really should not be troubled by the coolant boiling up unless there is a real problem elsewhere.

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indykid

posted on 2/2/21 at 09:48 AM Reply With Quote
Check the diameter of the cap.

The original neck on my alloy expansion tank used a larger cap than the neck I replaced it with. I think there are only 2 standard sizes, but don't get the wrong one.





me? ambivalent? well, yes and no

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