Heat exchanger rad cap pressure

[Jakem]

My rad cap is leaking a tiny bit and want to replace. What is appropriate for a ford 302 closed cooling system. 14psi?

 

[dubs283]

14 ought to be fine. Is there by chance a psi rating stamped into the current one?

 

[Jakem]

Originally it was 14 and I've changed it before to a 15 as that's all I.could find at the time. I got a 13 this time as they had no 14 in stock. Will it do

 

[Scott Danforth]

It will be fine. They range from 7 to 18 psi depending on year, etc

 

[QBhoy]

Hopefully you are right in thinking that you just need what you’ve described…but the pessimism and experience in me around closed cooling systems, might suggest that a leaking cooling tank cap might be leaking 9 out of 10 times…as a result of it just doing it’s designed function…as in relief of pressure caused by something else untoward

 

[Jakem]

I had boat out today. And the temp was good all day and the cap didn't leak. System ran as it should