Low oil pressure - oil pump a workable fix? |
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Low oil pressure - oil pump a workable fix? |
Tdskip |
Apr 18 2019, 02:21 PM
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Advanced Member Group: Members Posts: 3,686 Joined: 1-December 17 From: soCal Member No.: 21,666 Region Association: None |
Yeah, yeah, I know. It's not likely the oil pump but humor me.
The red aka turbo car is showing low oil pressure. It has a front mounted oil cooler and some sort of big bore engine. Oil level is full cold and when hot. When cold my oil pressure is good, when hot it isn't. I'm under 10 PSI per 1000 RPM hot. I don't have a history on the engine. I am running 20w50, Mahle filter. I have not put a mechanical gauge on it but it is already running a retrofitted VDO oil pressure gauge. Goal is to get another summer out of driving it if I can. I supposed it wouldn't hurt to try a mechanical gauge and heavier weight oil, but is there a chance it is the oil pump rather than bearings? |
ClayPerrine |
May 5 2019, 09:09 PM
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Life's been good to me so far..... Group: Admin Posts: 15,462 Joined: 11-September 03 From: Hurst, TX. Member No.: 1,143 Region Association: NineFourteenerVille |
The engines with the second relief valve at the back of the engine are famous for having hot oil pressure issues. I took the spring out of the one in Betty's engine and replaced it with a steel rod so it never will open. I figure it wasn't needed because the factory eliminated it in 75. Fixed the problem with low oil pressure when hot.
I would love to see someone with machine shop skills make up a plug that was one piece all the way from the piston to the plug. Then gun drill it and tap the outside hole for a pressure sensor. Put the oil pressure switch there, and the gauge by the distributor. |
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