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radiator cap pressure
Posted: Aug 23rd, '20, 16:01
by coolair
Any idea what pressure radiator cap you should run on gas engines? I have the Ford 460s and have looked through the service manuals i have and best i can find is its either a 7LB or 13LB
Re: radiator cap pressure
Posted: Aug 23rd, '20, 21:02
by mike ohlstein
Go with the 13, I would think.....
Re: radiator cap pressure
Posted: Aug 24th, '20, 11:47
by Stephan
I believe my Crusader 454s are a 7 lb. cap.
I have the Lenco heat exchangers.
Stephan
Re: radiator cap pressure
Posted: Aug 24th, '20, 12:32
by mike ohlstein
Oh boy.... There goes my car knowledge, spilling into places it doesn't belong.......
Re: radiator cap pressure
Posted: Aug 24th, '20, 12:42
by coolair
you got me really wondering now. I was thinking 13 was OK too.
Re: radiator cap pressure
Posted: Aug 24th, '20, 19:38
by Tooeez
I had 13lb caps on my 350's, and was loosing some coolant. I borrowed a pressure tester from the auto supply store, and found I had a small leak where the return hose enters the exchanger. The clamp wasn't all that loose, so on a whim I tested the caps. One opened at 22 lbs, and the other at 19 lbs. I replaced them with 7lb caps, which when I tested them opened right around 12 lbs.
Re: radiator cap pressure
Posted: Aug 25th, '20, 17:06
by Stephan
Yep. Just double checked and my caps are stamped 7 lbs.
Best,
Stephan