401 oil pressure - Off-Road Forums & Discussion Groups
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post #1 of (permalink) Old 09-12-2001, 01:59 AM
**DONOTDELETE**
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401 oil pressure

Finally got my rebuilt 401 installed. 45lbs @ idle cold. 20 pounds warm. BUT - 4-6 lbs at 3000rpm. At speed the pressure goes down when the engine is warm. No knocks or rattles. I replaced the gauge with a new mechanical set - same readings. What the hell? Does this sound like the timing cover worn or just lots - too much - clearances?
Merlin

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post #2 of (permalink) Old 09-12-2001, 01:05 PM
SPRUCE
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Re: 401 oil pressure

I have a similar problem. My engine shop has suggested that I check the oil pressure relief valve on the oil pump cover. I'm going the junk yard to get a different cover this weekend. My spring and valve were both new with the oil pump gears. I sure hope it works.

THE DIFFICULT WE DO IMMEDIATELY, THE IMPOSSIBLE TAKES A LITTLE LONGER...
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