need 2 know: oil pressure
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
The only spec. Ford gives for FE engines is a minimum of 35 PSI at 2000 rpm. Engine is to be at operating temperature.
Last edited by Bear 45/70; Nov 30, 2006 at 09:16 PM. Reason: I'm forgetful.
Postmaster
Joined: Jul 2005
Posts: 3,248
Likes: 0
My truck, with a 390 FE engine, and with a standard oil pump. Runs about 45 to 50 max psi at idle and 55 to 60 max at higher rpms. Hope this helps.
Last edited by 1975Ford; Dec 1, 2006 at 12:30 AM.
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FE "Freakin Expensive"
Joined: Dec 2003
Posts: 6,461
Likes: 4
From: Smith Mountain Lake, VA
I have had some FE's that had a little as 10psi at idle about 600rpm..and the went right up after idle to 35 to 40psi...all at operating temp with 30W oil... and with 80 degree outside temps..
And run as low as 5psi in 100 degree temps at idle...and as high as 70 psi at temps befow freezing! as long as you have pressure..I wouldnt worry about it!! and of course bearing clearences have alot to do with it also!! JMO..
RJ
And run as low as 5psi in 100 degree temps at idle...and as high as 70 psi at temps befow freezing! as long as you have pressure..I wouldnt worry about it!! and of course bearing clearences have alot to do with it also!! JMO..
RJ
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More Turbo
Joined: Nov 2004
Posts: 590
Likes: 1
From: in the woods of Maine!
Yea, it really all depends on how the clearances are. I would say as long as your over 15 PSI at idle, and 30 PSI are any higher RPM, you should fine in a stock motor. Now if it's been rebuilt then it all depends on how it was built, and what type of oil.
More Turbo
Joined: Nov 2004
Posts: 590
Likes: 1
From: in the woods of Maine!
yea, the 10 psi for every 1,000RPM is what I was taught at school too. Kinda like for every inch in diameter of bearing jouranl, you need .001" oil clearance....or maybe it was .0015, or .002"???....wait....001" sounds right tho
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