Spadednick

hello everyone. So I'm having a high oil pressure problem on my fresh GE block that I'm running on my GTE setup. Cold start I will see 110 psi! Warm idle I see 30 or so but then cruising I'm in the 80 range. WOT well above 100 again. No seals have pushed oil and no leaks so far but has me kinda stressing. About 200 miles on the engine. No info on the clearances as I had it build couple years ago. Reading pressure through union bolt. Also have checked with mech gauge at oil feed line and reads same cold start.Any info would be great thanks!
Decked/honed/tanked non vvti GE block
new GTE pistons/rings
clevite bearings
ARP hardware
New oem GTE oil pump
standard 10/30 (haven't made the switch)
deleted oil cooler

Bflatsharp

iTrader: (18)

Ge block-gte oil pump
maybe?

gerrb

iTrader: (34)

OP - you have mentioned the cause of your high oil pressure

* GTE oil pump on a GE block that has no output for turbo and oil squirters coupled with no stock GTE oil cooler.

Installing the stock oil cooler will lower a bit your oil pressure . Once this car is boosted , oil for the turbo will lower oil pressure too.

Until then your oil pressure numbers are high and can cause seals to leak. Every 1krpm should be around 10 psi of oil pressure.except at initial startup

Spadednick

A lot of people run the GE with the GTE pump. Maybe it's too good lol

Spadednick

would it help to drop oil weight a little? Cody Phillips runs all gte stuff on his GE blocks. Btw engine parts were all bough through Dave at 2jz motorsports. It was his part list

gerrb

iTrader: (34)

They do... I do for a reason , lol .

We have boosted setups where we want the oil pressure to lubricagte better our bearings and turbo instead of lubricating the underside of the pistons which isn't useful for forged pistons since they don't have internal oil passeges just like the stock gte pistons.

Continue running your unboosted engine that way and you will learn the hard way , lol.

Spadednick

Ok so I know why squirters aren't needed with aftermarket pistons. Also I hate the stock heat exchanger and plan on running a cooler. Also what makes u think my GTE setup isn't boosted? Lol also said I read pressure from turbo line. I'm just running a fresh block as my gte block is being built

Spadednick

I'm little more worried about the shearing of the oil at such a high psi. I hear that without squirters or even the turbo port the difference is only like 10 psi. Just seems like I'm seeing a lot more then that. I did hear the new GTE pumps are stronger. Would it hurt to drop weight?

1997Soarer

iTrader: (1)

Try switching to 5w-30. Then see what your numbers are.

Spadednick

That's what I was going to do on my synthetic switch and kind of see what's happening there. Car does not get driven in any sort of cold weather and is stored in a heated garage so that's my plan as of now thanks!

lexforlife

iTrader: (7)

As Gerrb was pointing out , using a GTE oil pump on ge block with either ge OEM pistons or aftermarket pistons will lead to higher pressures due to the mentioned non use of oil squirters . Only difference between ge and GTE pumps was GTE puts out higher pressure to account for those and for oil cooler and twin turbos