1G Oil pressure spike

a91eagletalon · Jul 9, 2017

Just pulled the motor for tranny swap

The main problem I have is a sudden spike in oil pressure normally before the problem started I had 15 to 20 psi idle warm and it did hit 90 to a 100 at 7500 rpm

Now I have 30 to 40 psi idle warm and 110 to 120 under normal driving conditions like its 100 psi by 3000 rpms

I wanted your guys opition before I started in on taking the oil pump housing off to see if it was something in there doing in like a stuck plunger or something

The balance shaft is deleted the oil pump has 3000 to 3500 miles on it it has not had and port work done on it

If you can give me any ideas or stuff to watch out for on the problem before I open it up that would be great

Thanks guys
MJP

Chaotic Deconstruct · Jul 9, 2017

You could have a blocked oil passageway somewhere or your oil passage relief valve could be causing your issue. These could cause a spike for sure. I am assuming your pressure gauge is functioning correctly?

a91eagletalon · Jul 9, 2017

Yes to the best of my knowledge the gauge is working correctly

Chaotic Deconstruct · Jul 9, 2017

If the gauge is working correctly and you have your balance shafts removed you might want to try the following on your pressure relief valve.

http://www.dsmtuners.com/threads/oil-pressure-relief-valve-porting.319342/

motomattx · Jul 9, 2017

Did you just switch to thicker oil by chance?

a91eagletalon · Jul 9, 2017

motomattx said:
Did you just switch to thicker oil by chance?

Same oil i always use Joe Gibbs HR4 10w30

Chaotic Deconstruct said:
If the gauge is working correctly and you have your balance shafts removed you might want to try the following on your pressure relief valve.

http://www.dsmtuners.com/threads/oil-pressure-relief-valve-porting.319342/

Yes I was planning on doing this also I am just concerned that this was a sudden oil pressure increase

a91eagletalon · Jul 9, 2017

I just pulled off the oil filter housing and it seams like the relief valve moves freely doesn't seam to be Jammed at all

One other thing I just noticed is this gasket is torn a bit and can flap against the hole going to the pan from the relief valve I added a pic

Do you think that can be causing a problem with the pressure or do you think I need to go ahead and remove the front cover and inspect everything

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motomattx · Jul 9, 2017

There is nothing under the pump cover to inspect or fix that would cause high oil pressure, at this point I dont know that I would even worry about it, the most I would do is maybe throw a Kiggly racing hla unit into the head to protect the lifters from pump up and go on my merry way.

a91eagletalon · Jul 9, 2017

motomattx said:
There is nothing under the pump cover to inspect or fix that would cause high oil pressure, at this point I dont know that I would even worry about it, the most I would do is maybe throw a Kiggly racing hla unit into the head to protect the lifters from pump up and go on my merry way.

That's what I was thinking also.
Dose my JB turbo need protected then with a oil restricter I am feeding that off of the OFH

motomattx · Jul 10, 2017

Wouldnt hurt to restrict it to whatever the manufacure recommends, or grab a Forced Performance filter with built in restrictor.

Tiki2777 · Jul 10, 2017

My 6 bolt build also has those exact massive oil pressure numbers you listed. I ported the ofh a little and it shifted down a lil bit, but I'm really not interested in porting more considering that my holset with a restrictor is happy. The thing we need to be watchful of is oil temps (get a cooler) and oil volume/pressure in the head ( get the kiggly hla).

a91eagletalon · Jul 10, 2017

Tiki2777 said:
My 6 bolt build also has those exact massive oil pressure numbers you listed. I ported the ofh a little and it shifted down a lil bit, but I'm really not interested in porting more considering that my holset with a restrictor is happy. The thing we need to be watchful of is oil temps (get a cooler) and oil volume/pressure in the head ( get the kiggly hla).

I plan on porting the housing a bit and definitely getting the kiggly restrictor and will check into a oil cooler later

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