oil pressure
- Thread starter 622r109
- Start date
steve911
Enthusiast
They are absolutely NOT related. Your exhaust has nothing to do with the oil system in your car. There must be something else going on. You didnt say how much lower you oil pressure is.
johnk
Enthusiast
On the other forum you said you had the same exact symptom (oil pressure dropped to 5psi) after you had 2 pistons replaced.. Did you have internal engine work and exhaust at the same time?
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Racer Robbie
Enthusiast
I would go back to who installed the pistons. did they check the clearance between the piston and the cylinder? Is the cylinder out of round? Did they hone the cylinder?Did they check and adjust the piston ring gap. perhaps they installed the rings wrong. What about the crankshaft bearing or the connecting rod bearing? It is hard to diagnose here on the forum as we do not know what the engine re-builder did to your engine.There are to many variables.
Robbie
Robbie
Pistons and rings cannot be the cause. Mains, rods and cam bearings are certainly possible. As is the pressure relief valve being partially stuck open. Given you had 2 pistons replaced I would be checking those 2 rod bearings and the pressure relief valve.
Are there any unusual noises? A missing bearing shell would result in a pretty big noise. Note sure what else in the bearing are could do that. Possibly if grooved bearing shells were installed at each main, top and bottom.
If the installer has no clue
I would check the sending unit and relief valve first, as they are both readily accessible without removing the pan.
Are there any unusual noises? A missing bearing shell would result in a pretty big noise. Note sure what else in the bearing are could do that. Possibly if grooved bearing shells were installed at each main, top and bottom.
If the installer has no clue
I would check the sending unit and relief valve first, as they are both readily accessible without removing the pan.
Mike Adams
Enthusiast
Why where pistons installed ?
