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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#1
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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? |
Al Meredith |
May 6 2019, 02:00 PM
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#2
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Senior Member Group: Members Posts: 960 Joined: 4-November 04 From: Atlanta, ga Member No.: 3,061 |
you mentioned that you don't know what was done to rebuild the engine . If it has a RABY cam kit installed it usually comes with cam followers that are drilled with a very small hole designed to spray oil on the cam lobe . That set up should be used with a HD oil pump because at high temps and at idle the stock pump can't keep up. I have two engines I built with the before mentioned Raby kit. One is a 1911 and the other is a 2056 and both exhibit the same low oil pressure at Idle when hot. I have oil pressure gauges and oil temp gauges in both cars but they both pump the proper oil pressure when running at speed , +/- 200 F I always get at least 10 PSI / 1000 rpm IE +30 psi at 3000 RPM. Both engines pimp about 80PSI when cold . I'm in Atlanta and use 20/50 "Driven Oil" By the Way both of these cars ( 914 and 912E) have been running this way for about 15 years with NO problems . Al
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