Oil Pressure
07-23-2005, 04:11 PM
#3
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St. Jude Donor '04-'05-'06-'07
Smokey Yunick (my engine god) said as a rule of thumb that 10 psi per 1000 rpm was enough for any engine with a properly set-up oiling system. Excessive oil pressure robs HP. 20 would be fine at idle.
07-24-2005, 07:49 PM
#6
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Bearing loads increase with the sqaure of revs, so at idle the bearings have little load and the 5 psi is technically okay, but most engines will generate at least 20 psi at idle.
Smokey's advice is for a racing engine. For a street engine that will occasionally see 6500, the base 40-45 psi spring is okay, and the lower your oil pressure the less parasitic loss.
Duke
Smokey's advice is for a racing engine. For a street engine that will occasionally see 6500, the base 40-45 psi spring is okay, and the lower your oil pressure the less parasitic loss.
Duke
07-25-2005, 02:18 AM
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St. Jude Donor '05
Once my L98 gets good and hot, my readings have been as low as 12-15 lbs 
. No problems yet!
. No problems yet!