oil pressure extremely high

[Kod]

When I bought this car my friend never had high oil pressure. Transmission went and car sat 2 - 3 years. When my car is fresh started oil pressure is at 100+ psi and my gauge maxs at 100 which the needle is always pinned. Takes 5 - 10 minutes before pressure drops to 20 psi. The balance shafts have been removed since my friend drove it before the transmission went. Anything I should look into before the long process of porting out the relief valve?

 

[black_gst]

Thats a drastic drop, what oil are you running. 20psi at idle is perfect what is your pressure at 3k rpms? 5k rps?

 

[black_gst]

also whats the ambient temp out there

 

[Kod]

5-30 royal purple but have used casttol and mobile 1 with basically same issue in pressure as for rpms idk until I talk to my friend his driving my car until im back from vacation.

Temp is 20 - 30 in the morning and 50+ in afternoon.

 

[black_gst]

it sounds like its just cold oil temps causing high pressure on cold starts

 

[2GbTalonGuy]

Do you have a BSE installed? That can cause oil pressure to go up some.

 

[Kod]

What is BSE? also, it is not just in cold starts. It is all year round.

 

[HIGHPSI4]

Yes, he stated BSE.

 

[renovatdkitchen]

What is BSE? also, it is not just in cold starts. It is all year round.

Balance Shaft Elimination. Could it possibly be something with the oil pressure sending unit?

 

[Kod]

My friend eliminated the balance shafts before installing the engine. He doesn't recall the oil pressure ever being high but I haven't had the chance to talk to him today anyways I do know even after engine is hot if I floor it my pressure does max out on my aftermarket gauge. Which this issue is starting to causes gaskets and seals to start leaking.

 

[ed1380]

You need to port the valve in the ofh and by the sounds of how extreme your situation is you might need to cut a coil from the pressure relief valve.

 

[Kod]

So guess my best bet is following the guide on porting the relief valve out and see if it stops then start replacing bad seals.

 

[johnmel]

You need to port the valve in the ofh and by the sounds of how extreme your situation is you might need to cut a coil from the pressure relief valve.

What he said. And check for build up cause you said it wasnt moving for a while chance are you got some build up going on causing less flow

 

[fosforito95]

So if 20-30 psi is oil pressure at idle what should it be at wot?

 

[ed1380]

At least 11psi at idle. about 30psi at 2k and keep rising from there. Around 70psi the pressure release valve should open and it shouldn't get higher than 75-80psi. If higher then you need to port and if necessary cut the spring.