does anyone have the answer to this

[95tsiawd0330]

ok so i have read that when you do a balance shaft elimination that you should port your oil pressure relief valve at the oil filter housing.but know one has said what psi your oil it should be at.so does anyone know what psi i should look for when i port my ofh when car is cold and hot.just need to know when i ported the ofh just right

 

[Aphix]

Well your oil pressure should stay at normal factory levels after porting it, and those numbers are definitely floating around the forums. Off the top of my head, your idle oil pressure should be about 15 psi I believe.

 

[MitsGray97]

From what i know.. when you eliminate the shafts the oil pressure becomes just a little higher. On mine its about 18 psi and i think the lowest ive seen it go was about 13 psi. If i rev it itll spike up to 90-100 psi.

 

[laserspeeddemon]

Oil pressure should be around 10psi for every 1000RPMS.

So at 35000RPMS you should be seeing around 35psi. At 100psi you are running the risk of pressing oil through seals. The oil seals on the turbo are a common one to go first from high oil pressure

 

[RamenPride]

Oil pressure should be around 10psi for every 1000RPMS.

So at 35000RPMS you should be seeing around 35psi.

Wouldn't that would be 3500 psi?

 

[ramsack]

350 psi

 

[95tsiawd0330]

if forgot to say i have a autometer oil gauge and when i start the car up i see the oil psi at 83 psi when cold.Dont know what the psi is when it warms up dont want to find out until i get some info from dsmers.also my factory gauge does not work.but is 83 psi ok and if i rev the car it goes to 98 psi cold.

 

[96 420a-t]

Cold oil pressures are slways higher because cold oil doesn't like to flow as easily.

 

[thomcasey]

That is too high for cold Oil Pressure. After I ported mine on my manual, I saw 50psi at cold Idle, warm idle was 12-15. I never see over 70psi.

Too high oil pressure can be bad on all bearings, not just the turbo's. I know this, I didn't port mine initially, ended up blowing an oil cooler line, smoked the head due to spun seats. Definitely recommend porting the OFH.

 

[ramsack]

The filter design spec for the 4g63 says that it must be able to withstand ~250 psi of oil pressure because of cold starts. The heavier the oil the higher the pressure will be. Your cold idle pressure is not that unheard of.

 

[DSM1G90]

Thought you just replaced the BS bearings with standard sleeves to close off the oil feed to the original BS bearings...

 

[V8 eating dsm]

You shouldn't have to port anything if u run a decent kit with an oil jurnal still in the stubby

 

[awd_some]

Good informative post. I just installed an oil pressure gauge and see 20-25psi warm (coolant = 210-225*F) at idle, 900 rpm. Is this an alarmingly high?

 

[miguelmcv]

Good informative post. I just installed an oil pressure gauge and see 20-25psi warm (coolant = 210-225*F) at idle, 900 rpm. Is this an alarmingly high?

Every car is different, It depends on what oil grade you use, if you use 30, it will be lower, if you use 10-40, it will be higher, But, to answer your question, Do a hard pull, and see how high your oil pressure goes, If it pass 100psi, then you need to port your OFH, or you need to go with different oil grade.

ok so i have read that when you do a balance shaft elimination that you should port your oil pressure relief valve at the oil filter housing.but know one has said what psi your oil it should be at.so does anyone know what psi i should look for when i port my ofh when car is cold and hot.just need to know when i ported the ofh just right

Just check how high your oil psi goes, and go from there, If it goes over 100psi, then port a little, after you do the port, try it again and see how much it went down, If things still high, then keep porting until you go lower then 100psi, If you get exactly 100psi at high rev, then you are good to go.
Don't worry about the psi at lower rpm, as far as you don't go lower then 10 psi, then you are good, But, 15 psi on hot engine is the target.

 

[awd_some]

Every car is different, It depends on what oil grade you use, if you use 30, it will be lower, if you use 10-40, it will be higher, But, to answer your question, Do a hard pull, and see how high your oil pressure goes, If it pass 100psi, then you need to port your OFH, or you need to go with different oil grade.

FWIW, I'm running 10w30 synthetic. I'll play around with different weights this season... I have noticed the oil pressure stays pretty high even after idling for awhile. I assume this is a good thing and its reassuring to see something useful after the piece of crap stock oil sender died for the 2nd time.

Here's a sample vid, and excuse my poor idle, I'm still shaking down these BM 1450s

14 point 7 - SLC DIY2 - Oil Pressure Gauge - YouTube