Re: H psi

Posted by Steven@AZ on April 19, 2007 at 14:12:26 from (72.20.78.220):

In Reply to: H psi posted by Pat-CT on April 19, 2007 at 13:53:16:

The H, M, up through the 450 were all designed with a 75 psi relief valve for the oil pump.

My rebuilt H will run 70 psi all day long with Mobil Delvac 1 5w-40 in it at 1/2 to full throttle, at idle when warm it will come down to around 60 psi.

As long as you have over 20 psi at full throttle I wouldn't worry at all. I've seen many of them still running with 10 to 15 psi max.

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