Hey there Guest!
Hey - did you know if you click on the title of a thread it will take you to the first unread post since you last visited that thread?
but were afraid to ask: 
STOP!! Never post your email address in open forums. Bots can "harvest" your email! If you must share your email use a Private Message or use the 
smilie in place of the real @
Pretty Please - add it to our Events forum(s) and add to the calendar! >> 
Hello all,
My engine has 75K miles on it. Hot idle pressure was around 15 psi and hot running was around 40 psi. I had the rocker shaft rebuilt and the hot idle went up to 25 psi and the hot running pressure was up to 45 psi. I replaced the pressure relief spring with no change.
I just shimmed the spring up by .120". Now cold idle is at 55 psi. Cold running is up to 65-70 psi with keeping the RPMs below 3000. Hot idle is at 35 psi at 700 rpm. Hot running is 55-60 psi.
My question: Is the cold running pressure of 65-70 psi too high? I have read that it should top out at 60 psi. It runs this way for about 10 minutes and then stays below 60 psi.
Thanks,
Mark
My engine has 75K miles on it. Hot idle pressure was around 15 psi and hot running was around 40 psi. I had the rocker shaft rebuilt and the hot idle went up to 25 psi and the hot running pressure was up to 45 psi. I replaced the pressure relief spring with no change.
I just shimmed the spring up by .120". Now cold idle is at 55 psi. Cold running is up to 65-70 psi with keeping the RPMs below 3000. Hot idle is at 35 psi at 700 rpm. Hot running is 55-60 psi.
My question: Is the cold running pressure of 65-70 psi too high? I have read that it should top out at 60 psi. It runs this way for about 10 minutes and then stays below 60 psi.
Thanks,
Mark
A friendly reminder - be careful what links you click on here. If a link is posted by someone you don't know, or the URL looks fishy, DON'T CLICK. Spammers sometimes post links that lead to sites that can infect your computer, so be mindful what you click.