Oil pressure???
Thread Starter
Racer
Joined: Sep 2002
Posts: 357
Likes: 0
From: Sayville New York
Oil pressure???
What should my oil pressure be at when I am idleing and when I am crusing at like 2500 rpms. I don't know if the year and engine option matters, or if it is the same for all 350's. But if it matters I have a basically stock 81 Vette, with just under 70,000 miles. I want to get an average of what everyone's oil pressure is so I can have a baseline to compare mine to. I am not a genius when it comes to being a mechanic. I wouldn't say I am an idiot either. I worry when I am out driving, and I am planning on extending my short drives. But before I do I want to know what my oil pressure should be at. Thanks for any help you can give me.
Race Director
Joined: Nov 2000
Posts: 11,872
Likes: 12
From: Waterloo ontario Canada
Re: Oil pressure??? (BB wowbagger)
That rule of thumb of BB wowbagger is right on. 10 pounds per 1000 rpm. So if you turn 6000 you need 60 psi.
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A normal bearing clearance of .0025 mains and rods takes 1 gallon of oil per minute leakage. Increase the clearance by .001 and the oil comsumption goes up to 2.5 gallons per minute per main bearing.
Clearances greatly effect oil pressure.
'
A normal bearing clearance of .0025 mains and rods takes 1 gallon of oil per minute leakage. Increase the clearance by .001 and the oil comsumption goes up to 2.5 gallons per minute per main bearing.
Clearances greatly effect oil pressure.
