What is considered normal oil preasure at idle for a used Ford 302 150 hp I have a friend that has a 302 with c4 trans used good runner but the oil preasure is about 20 lbs at idle is that a little low or normal do we need to pull the pan & check the bearings & pump.
Thanks guys I will let him know we did not want to pull the pan I will tell him to change the oil & filter as it is dirty he just picked up the motor & c4 trans for a project he is gathering parts for the motor has a 4 barrel holy. I am still recovering from 2 back & 2 neck surgerys over a 10 day span so my help & work is limited for about another month but I feel great no pain in the legs & right hip any more & no numbness in the right arm & hand. Going stir crazy while in the recovery mode, no pain pills, no tylonal, no aleave, no ibprofen of any kind I am feeling the best I have in 8 or 9 years Thanks again for the quick response.
Give this a read:http://mustangs.about.com/od/accessories/fr/Quaker-State-Defy.htm then go to Wally World and get the oil and a Ford Motorcraft FL-1A filter to match.
SM & SN has no zinc/ZDDP, earlier oil like SF rated Accel Brand 10W-40 @ Wal-Mart does. Put zinc in search & start reading!
you should have 10 psi per 1000 rpm minimum. a little more isn't bad. a lot more just robs horsepower a higher rpm's. built a few nascar engines over the years, just a general rule of thumb.
My 5.0 Mustang ran near 60psi cold (fresh after an oil change) and around 50 hot at anything above idle. Idled about 30-35 always. This was with 20-50W oil and as observed on a mechanical guage.
Agreed. The one in my Ranchero was almost that bad. Found that if you put 20w/50 oil in it the pressure will come up.
Mine is 70 PSI when cold; drops to around 55 when warm. Idling in "Drive" when hot is about 35. This engine has only 2500 miles on it with a standard-volume oil pump.
A little off topic,I've been told that SBF's need like 100 psi oil pressure to survive when pushing a lot of power for circle track. Any truth to it?
We never ran that high. We set the oil pump relief valve at 60psi and ran Valvoline 50 weight Racing oil back in the 70s.
I second this. I have also seen quite a few distributer problems in small fords running high pressure pumps. The pumps create more drag and wear the bushings in the distributer.
Particularly in the later distributors. Ford's originally had upper and lower bushings, but when they went to electronic and there was no more side load from the points they eliminated the lower bushing and too much oil pressure will cause pre-mature wear on the upper.
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