Radiator cap advice

rascacio

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Can anyone give me a suggestion as to what pressure the rad cap on a Sole' 62 engine should be approximately ?

It's a marinised Mitsubishi S4Q2 engine. It has an 'old style' rad cap ie pressed steel and no expansion vessel.

I could do with taking one over to my boat in July just as a precaution.

I seem to remember that many years ago cars without expansion vessels were running at about 13 psi.

Can anyone give a bit of guidance that will help please ?
 
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