High Oil Pressure bad for turbo?

[Specter]

So guys the thing is that after eliminating the balance shafts during my engine rebuild, i am having very high oil pressure. The oil pressure gauge pegs at 100psi when the car goes above 3000rpm on full throttle. At cold its around 80psi, at warmup its around 20psi, but at full throttle the gauge pegs to full 100psi. My stock td04 turbo has been blown, i think this high oil pressure is the reason. I didnt play with the relief valve in the oil filter housing yet.

Now i am getting an evo 8 turbo with its manifold free of cost from a friend, but i am afraid that this turbo might get blown too due to too high oil pressure.

The reading for the gauge is being taken from the oil filter housing. I have not counter-checked the reading with another good known oil pressure gauge.

So my basic question is that do journal bearing turbos blow due to too high oil pressure?

 

[ktmrider]

"PLAY" with the pressure relief valve first thing.

Yes JB turbo seals can have oil push past them, thus why there are numerous threads telling you to "PLAY" with the OPRV.

And BTW what machine shop is modifying the EVO8 manifold to fit on your 180 rotated engine?

 

[Specter]

Thank you for the swift response. I guess i should "Play" with the OPRV this weekend before even thinking of putting that turbo on. /ubbthreads/images/graemlins/grin.gif

We are looking forward to make an adapter between the manifold and the turbo which will rotate the turbo 180 degree and retain its twin scroll smooth path flow.

 

[RedTwo]

You could look at an oil pressure gauge with more range, 100psi is not enough. You'll easily be hitting ~120psi at full throttle.

 

[Specter]

^Yes perhaps..and it could be more than that too. I dont drive the car around much, nor do i take it to 5,000+ rpms. But as it needs to be corrected, i am looking forward to try it this weekened.