oiling upgrades
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New User
Joined: Oct 2006
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oiling upgrades
Hello everyone, I'm A newbe. I have a problem I know you guys can help.
I Drag race a 79 mustang with a 390 fe. i have spun #7 Rod bearing. Then I
Did Rebuild it again.After fixing the oiling problem I made 32 passes and spun
# 2 rod bearing. Am I forgeting anything I run this at 7000 rpm I resticted
The Heads with #90 holley jet, and chamfered the mains also bored out the oilpump hole Any info would help! thanks.
I Drag race a 79 mustang with a 390 fe. i have spun #7 Rod bearing. Then I
Did Rebuild it again.After fixing the oiling problem I made 32 passes and spun
# 2 rod bearing. Am I forgeting anything I run this at 7000 rpm I resticted
The Heads with #90 holley jet, and chamfered the mains also bored out the oilpump hole Any info would help! thanks.
Cargo Master
Joined: Aug 2000
Posts: 2,931
Likes: 12
From: SW Michigan
oil problems
Dew, I suspect you're fast enough in that car to have the same problems the 428 'stangs had in 67 & 68. What do you have for an oilpan ? What kinda oilpump ? The older 'stangs, when accellerated hard enough, had a problem with the oil sloshing to the back of the pan, away from the pump's pickup tube. Ford solved it by adding a windage tray and running 6 quarts instead of 5. What Ford did worked, but was kinda quick and dirty. A better design of oilpan is the best cure. DinosaurFan
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New User
Joined: Oct 2006
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I have a 7 qt pan rear sump out of a old 75 highboy 360 block i have Complete dove roller rocker set speed-pro pistons, h-beam rods, cast heads that have 209 intake 165 exhaust valves. fully ported 63 shaved to 63 cc gives me 11.2-1 compression
Oil pump is high volumn Melling
This time i'm going 449 stroker but I want to fix this Problem. How much Clearance For Mains & Rods I Had 0015-00175 thousands maybe Thats Too Tight , I'm Not sure.
Thanks! Guys.
Oil pump is high volumn Melling
This time i'm going 449 stroker but I want to fix this Problem. How much Clearance For Mains & Rods I Had 0015-00175 thousands maybe Thats Too Tight , I'm Not sure.
Thanks! Guys.
Elder User
Joined: Mar 2004
Posts: 747
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From: Klamath Falls OR
you need .002 to .003. You are too tight on the mains and rods. You have to run them lose if you are running that kind of RPM.
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Elder User
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From: Klamath Falls OR
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Cargo Master
Joined: Aug 2000
Posts: 2,931
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From: SW Michigan
Wow, way way too tight !
Dew, those bearings are way to tight. I run mine at .003~.0035 on the mains and no tighter than .0025 on the rods. I wouldn't be afraid of up to .0045 with what you're doing. yes, the pressure will be a little lower with the big clearances, but the extra oil moving across the bearings will also keep them nice and cool. DinosaurFan
