Mechanical oil pressure gauge

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Apr 1, 2008 | 08:55 PM

blkbird

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From: san antonio, tx

Mechanical oil pressure gauge

Well, i finally hooked one up to see what was really going on in my car..... Dont think its good. On a cold start the mechanical one read 30ps1 and the dash read about 39ps1. This is with swapping out the oil pump to a melling pump. Ive never seen any shavings in the oil and when i replaced the oil pan gasket in january, i didnt see any accumulation of anything in the remains below. The car really doesnt make any kind of noises. It squeaks a little when cold but goes away after it warms up. What could be the deal???

Apr 1, 2008 | 11:17 PM

FMX05

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From: Aiken, SC

30psi is fine? At a cold idle you only NEED ~20-25psi(real psi not the dash gauge). What is the hot idle and WOT@6k rpm?

Apr 1, 2008 | 11:18 PM

Z28/2002

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How did you hook up the mechanical gauge??

Apr 2, 2008 | 11:45 AM

blkbird

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From: san antonio, tx

I tapped the fitting above the oil fillter. I havent let it get to full temperature yet cuz it started leaking a little from the fitting i installed. When I rev it the rpms do go up to +/- 50psi. Cant see what rpm im at cuz i mounted the gauge in the engine compartment.

Apr 3, 2008 | 02:08 PM

Z28/2002

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From: Your girl's back door giving her the long stroke while you're at work

Thanks

Apr 3, 2008 | 04:55 PM

blkbird

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From: san antonio, tx

Once I fix the little leak im gonna take it out for a spirited run to see what the pressure is like at hot idle.... That may not be for a while. I just bought a new truck so dont really need to drive it around much anymore....

Apr 5, 2008 | 06:38 PM

blkbird

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From: san antonio, tx

Ok. So i let the car warm up and on hot idle on the mechanical gauge it reads around 16-17psi which is close to what the interior gauge is reading. I rev it to about 5K rpms and it goes to about 50psi on both. Now, should I be worried??