Rb26 Oil Pressures

[den001]

id like to know what would the best oil pressure 2 run in a say 9500rpm engine. I know it goes on tolerances but my mate has bought a nitto pump, threw it on and had 120 psi at 8k, this 2 me is 2 high, hes even blown the rear seal out as a result.

Is 75 80 psi up top efficent enough?

[GTRNUR]

Yikes! What tolerances did he use on the crank and big ends to achieve that kind of result? And what weight oil... and i assume it was well up to temperature before it was given the big rev right?

[Swiper the Fox]

id like to know what would the best oil pressure 2 run in a say 9500rpm engine. I know it goes on tolerances but my mate has bought a nitto pump, threw it on and had 120 psi at 8k, this 2 me is 2 high, hes even blown the rear seal out as a result.

Is 75 80 psi up top efficent enough?

The rear seal does not see oil pressure. I would not be concerned with the level you mentioned on a cold engine. Oil pressure is your friend.