Oil Pressure
Oil Pressure For anyone that has aftermarket oil pressure gauges, what is your oil pressure at idle? And what does it go to when its throttled up to about 2500-3000rpm's in park? I think I may have a problem.
Thanks
Thanks
Teching In
Joined: Apr 2003
Posts: 36
Likes: 0
From: Auistin, TX
I had a friend that had LS1 oil pressure problems. The engine did not make noise and ran well, just low oil pressure. The problem was a missing upper half of the #3 main bearing. It was missing from original assembly.
I'm not sure whether location of the gauge is relevant or not but I'm running a mechanical gauge (the original 1970 one). It's tapped into the block just above the filter. Cold idle, I have 35psi but hot idle is only about 5psi. It jumps up with any throttle input, so I think my 700rpm idle may be a little low for the ported LS6 oil pump. Can anyone correlate the readings at the filter and the top of the block (the stock location)??
The traditional belief is that you need 10#s of pressure for each 1000 rpm. So if you're idling at 1000, you only need 10psi. I think the big deal is when you're turning 6k and only have 30psi. Then I'd be worried.
The traditional belief is that you need 10#s of pressure for each 1000 rpm. So if you're idling at 1000, you only need 10psi. I think the big deal is when you're turning 6k and only have 30psi. Then I'd be worried.
TECH Apprentice
Joined: Oct 2003
Posts: 353
Likes: 0
From: Fort Davis TX
Kenny,
You went through the engine correct?
The only other problem I have ever heard of with PSI is the rubber O ring on the pick up tube. It always seems to get messed up. Check that if your not certain.
Glad you got it running at least
You went through the engine correct?
The only other problem I have ever heard of with PSI is the rubber O ring on the pick up tube. It always seems to get messed up. Check that if your not certain.
Glad you got it running at least
Scooter, I have a guage tapped in the same place as you except mine is electric. Didnt seem to increase the pressure upon accelerating. Ya I am aware on the theory behind the pressure per rpms but I would rather it have more.
PWZ, Yes I went through it and I was a little sceptical of the cam bearings although they had no wear actually showing, they had a lil copper in one small spot like maybe the bearing was kinda tight there. Anyway I have ordered everything I need including a new pump O-ring, cam bearings from Texas Speed earlier today. If it does it again it will get ran until the engine finds the problem itself.
PWZ, Yes I went through it and I was a little sceptical of the cam bearings although they had no wear actually showing, they had a lil copper in one small spot like maybe the bearing was kinda tight there. Anyway I have ordered everything I need including a new pump O-ring, cam bearings from Texas Speed earlier today. If it does it again it will get ran until the engine finds the problem itself.
Last edited by flyinlowss; Aug 24, 2004 at 02:48 PM.
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Originally Posted by flyinlowss
Scooter, I have a guage tapped in the same place as you except mine is electric. Didnt seem to increase the pressure upon accelerating. Ya I am aware on the theory behind the pressure per rpms but I would rather it have more.
If electric gauges weren't so expensive, I'd consider putting one in the top of the block just to see what the difference is between there and the bottom.
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Verdad Gallardo The only way I could see the pressure drop between the two points would be due to flow volume between the top of the block and the bottom. But thats just me. I know on old school there really isnt a significant difference rather you get it from the side at the filter or the top rear of the block.