View Single Post
  #4 (permalink)  
Old 08-08-2008, 06:08 AM
DAVID GAGNARD's Avatar
DAVID GAGNARD DAVID GAGNARD is offline
Senior Club Cobra Member
Visit my Photo Gallery

 
Join Date: Jan 1999
Location: MARKSVILLE,LA.,,
Posts: 3,235
Not Ranked     
Default

I have a Melling HP series oil pump that is adustable for pressure... Normally I run about 50 to 55 psi on track at speed once the oil is at temp (220 to 240 degrees)....idle oil pressure is 30 to 35 psi at temp...
I really like this oil pump, it is a blue printed pump from Melling is under 50 bucks.... it is stock pressure and stock volume (I don't care for high volume pumps), but where the spring is, instead of a plug in the hole, it has a large Allen head screw, screwing it in or out will adjust the pressure......

Start-up, cold oil, it goes to 60 to 65 psi, as the oil warms up, pressure drops....I'm runnig Mobil I 15/50...... I have tried other oils and get within 5 psi regardles of what type/weight oil I use....

Motor is a 331 cu in stoker, 12.75 to 1 compression, turning from 3000 to 7000 rpms on track......

For a street car/motor, I would think anything over 40 psi at speed would be fine, and 25 to 30 psi at idle.....
David
__________________
DAVID GAGNARD
Reply With Quote