Oil Pressure problem... Suspecting Turbo issue - Toyota Yaris Forums

rob323 · 12-07-2010, 04:45 PM

Take some oil pressure readings from the block, make sure the pressure there is as it should be first. Then find out what oil pressure those turbos from on Skylines and put a restrictor in the line to try and achieve that.
If you have a breather line from the rocker cover back into the intake before the turbo, put a clear plastic fuel filter in that to see if the oil is from blowby and coming into the system that way.

Parmas · 12-08-2010, 02:23 AM

Quote:

Originally Posted by rob323

Take some oil pressure readings from the block, make sure the pressure there is as it should be first. Then find out what oil pressure those turbos from on Skylines and put a restrictor in the line to try and achieve that.
If you have a breather line from the rocker cover back into the intake before the turbo, put a clear plastic fuel filter in that to see if the oil is from blowby and coming into the system that way.

I don't think there should be much difference of pressure readout if I screw the oil fitting directly to the block.. Considering bluevitz-rs readings I am way far low than normal.

The engine do not breath into the intake. The rocker cover holes are directly venting to the air ( at least for now )

I have to mention aswell that from the beginning I installed the engine into the car I had the "Oil pressure" warning light on the dash switching on about instantly. The stock/dash sensor is reading at a T-style fitting tapped at the front of the block going then to the turbo (Where I put the oil Pressure gauge)

Does toyota mention the safe Oil pressure range of the 1NZFE somewhere?

rob323 · 12-08-2010, 05:56 PM

As per the manual (but it doesn't say where abouts to take the readings from):
At idle speed - 29kPa (4.3psi) or more.
At 3000 rpm - 150-550 kPa (22-80 psi)

With oil pressure allowed to be that low at idle, I'm not surprised your oil light is coming on. I'd be shimming the relief valve a bit to help bring that pressure up a little (not an easy job though).

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Zage Turbo Kit Install - Toyota Yaris	Focus_Sh1ft	Forced Induction Forum	160	02-06-2022 09:14 PM
best synthetic oil and m/t oil??	doodoo	DIY / Maintenance / Service	122	04-03-2017 09:43 PM
Yoda's Turbo Log	Yoda	Forced Induction Forum	404	08-17-2013 08:22 PM
Oil pressure sender fittment?	karlblanchard	Performance Modifications	0	06-11-2010 07:32 AM
HKS turbo timer type 1	Tamago	Performance Modifications	3	07-21-2009 12:59 PM

12-07-2010, 04:45 PM	#1
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	Take some oil pressure readings from the block, make sure the pressure there is as it should be first. Then find out what oil pressure those turbos from on Skylines and put a restrictor in the line to try and achieve that. If you have a breather line from the rocker cover back into the intake before the turbo, put a clear plastic fuel filter in that to see if the oil is from blowby and coming into the system that way.

12-08-2010, 05:56 PM	#3
rob323 Don't drive it, RALLY it! Drives: 1999 echo PRC rally car Join Date: Oct 2008 Location: Joyner, Brisbane Posts: 321	As per the manual (but it doesn't say where abouts to take the readings from): At idle speed - 29kPa (4.3psi) or more. At 3000 rpm - 150-550 kPa (22-80 psi) With oil pressure allowed to be that low at idle, I'm not surprised your oil light is coming on. I'd be shimming the relief valve a bit to help bring that pressure up a little (not an easy job though).