So your probably above 100 i have the 150 psi one

UrbanSmoker said:

I'm taking my measurement from where the factory sending unit used to be located. I have a BB turbo. The guage reads 90psi but logs show a max of 75, but the logs have been inaccurate due to voltage offsets. I see 30psi at 1k rpm when hot.65-75 when cold at idle. My ofh is already ported but maybe it needs a little more? I am gonna get a kiggley hla maybe that will help a few psi.

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I would be happy with 90 psi max pressure hot. I would not worry about the log boost as much as what the gauge is readiing. I have around 85 psi max oil pressure hot using 20/50 semi syn and my rod bearings looked like brand new after 4 years. No shafts and OFH is ported and im using an aftermarket oil cooler.
Higher oil pressures like 100 psi are fine as well its just harder on the pump and waisted HP depending on how high your reving the motor to. If your reving the motor to 9500-10k you want 100+ psi of oil pressure to keep the bearings happy. I only hit 8k-8200 rpm shift points on a pass so I dont need all that extra oil pressure. 90% of you guys will be fine with oil pressures 85-90 psi hot at 7-8k

My buddy ran into the same problem and just had a pretty catastrophic event take place. Not sure if this caused it or what.

Nicholas Andrus said:

My buddy ran into the same problem and just had a pretty catastrophic event take place. Not sure if this caused it or what.

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Which same problem?

I'm not worried about the logged values as they are always based on voltage offsets. The guage never lies. But it's always nice to have matching logged numbers as refrence points after the fact. I have a hard time looking at the afr, boost, and oil psi during a pull and assessing everything is okay before the pull is over.

He just had extreamly high oil pressure. Then smoke began to happen during idle and then oil began to come out of his intake.

Port first, then decide. The HLA will not help pressure @ the rod bearings. IF you run too high pressure all the time, you will smoke your bearings. Oil does more than lubricate, it also cools. ID the pressure is too high, the oil will pass faster than it can cool. I am running a fresh motor rebuild, BSE, ported OFH, I see 80-85psi cold idle (15w40 Rotella) and 80psi WOT @ 7500rpm max on stock HLA.

UrbanSmoker said:

Which same problem?

I'm not worried about the logged values as they are always based on voltage offsets. The guage never lies. But it's always nice to have matching logged numbers as refrence points after the fact. I have a hard time looking at the afr, boost, and oil psi during a pull and assessing everything is okay before the pull is over.

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Kyle
Once I have a solid idea on were the oil pressure is I really dont look at it anymore unless im in the middle of lets say third gear. Im more concerned about the wideband reading more than anything. Yea get the offsets correct on link as im sure you review your logs often and worry when you dont see the number it should.

Just bringing up an old thread got a few quick questions I need to pick peoples brains about.
After doing my BS delete and installing a new oil pump my oil pressure's been off the "charts" high seeing as much as 120 psi cold start idle (10W30 conventional oil) . I ported the Oil pressure relieve valve to the maximum amount possible, it still didn't fix the problem tho. Only drop the pressure by about 20 psi to 100 psi cold idle, warm idle is about right bumps between 9-13 psi, but I still had high oil pressure through out the rev range. So I found that cutting the relief valve spring should help to so I cut one coil off, I'm still high all through out the rev range, at 3.5k rpm my oil pressures at 80.
Now I wouldn't be overly concerned if it weren't for two things...... I'm continuously blowing turbo oil seals (just killed my 5th 14b in 14ish k miles) and my crank shaft end play is out of spec.
I'm mainly wanting to take car of my high oil pressure going to the head to keep from blowing turbo's. I've looked at the kiggly HLA but dont know if it directly affect the oil pressure to the turbo? what are my options?

The HLA regulator will not reduce the pressure to the turbo, if anything it will make it a little higher at the cams and turbo feed. For killing the 14b's, how are you feeding it? The OEM hard line has a restrictor in it.

For what its worth, I've been running 110-120psi on the drag car forever. It is about 120psi cold and warm idle at 1000rpm is down around 15-20psi. I've not seen any issues with high pressure hurting bearings in any way. I've talked to people with some V8 blown alcohol applications running up to 200-250psi oil pressure. The more flow through the bearings, the more they cool.