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low oil pressure?

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Old Feb 26, 2010 | 04:16 PM
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i bought a 2002 z28 today and when i was driving it, i noticed that the oil pressure might be a little low. at idle the oil pressure is at 20 psi and when i drive it the oil pressure is at 25-35 psi. does this seem normal or low? what is the normal oil pressure for an ls1 engine? thanks!
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Old Feb 26, 2010 | 04:34 PM
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Try changing the oil and filter, and let us know what it runs then.
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Old Feb 26, 2010 | 04:52 PM
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i am planning on changinig the oil when i get the car home but i have to drive the car 1000 miles to get it home. is there any chance of any damage being done to the car?
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Old Feb 26, 2010 | 07:41 PM
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No on damage but that is the low end for these cars. Mine idles hot at 40 and runs 50 at 1800-2000k and 60 @ redline. There are guys higher and lower than me. If you see a dip at WOT before it rises you have probs. As long as you have a steady rise you are ok....
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Old Feb 27, 2010 | 12:57 AM
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Originally Posted by SOMbitch
No on damage but that is the low end for these cars. Mine idles hot at 40 and runs 50 at 1800-2000k and 60 @ redline. There are guys higher and lower than me. If you see a dip at WOT before it rises you have probs. As long as you have a steady rise you are ok....
I agree, please keep us upto date! Be easy on it for the trip home, if you have not made it yet. Don't worry about it unless you see a drop as said above....
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Old Feb 27, 2010 | 05:59 PM
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I think normal oil pressure should be a little about the 1/4 mark. If it gets any lower than that I would shut that thing off beforre you cause major engine damage.
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Old Feb 28, 2010 | 12:20 AM
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To the OP: what is the update on this?
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Old Feb 28, 2010 | 12:42 AM
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minimum required pressure at idle is 6lbs so you are ok. from my experiences if it drops at wot before rising the oil is low
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Old Feb 28, 2010 | 08:29 PM
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i just got the car home a few hours ago. the oil pressure on the way home stayed between 35-40 psi at 60-70mph and between 1500-2000 rpm. the oil pressure went up as soon as i hit the gas. i didnt mention this last time i posted but there is a whining noise coming from the front of the motor. it is very loud. any idea what it could be? my dad said it could be an ac compressor or idler pully but i just want some more input.
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Old Mar 1, 2010 | 11:54 AM
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Well, the oil pressure seems great! Congrats on that. I would have to hear the noise myself, but maybe P.S. pump??? Anyone else??
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Old Mar 2, 2010 | 03:31 AM
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I agree on the ps pump. I heard it was some blow off valve not sure
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Old Mar 2, 2010 | 08:02 AM
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Originally Posted by rokinv8
i didnt mention this last time i posted but there is a whining noise coming from the front of the motor. It is very loud. Any idea what it could be?

its a supercharger!!!!!! Lol
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