So i have a weird situation with my rb25 engine...
I think i have rounded it down the engine rings or turbo failure, but then again ive been wrong before, symptoms are;
It blows oil smoke(yes it is 100% oil smoke) after about 2 mins of driving, no massive embarrassing plooms but enough to be embarrased driving in mild traffic. There is no oil in the intake piping at all near the compressor or intercooler. I have a catchcan with blocked off pcv valve to plenum..catch can is venting to atmo... so there is no oil going back into the intake.
After hardcore drives the catch can fills about 30mls, but that could be becuase i still have rb20 rocker covers??, although i do think the engine is a little tired..
The car itself cranks over perfect.. cold, hot whenever and idles great no smoke. It is only when the car warms does it blow smoke..the worst is when just taking off there a ploom then it seems to go away, then when its boosts its back again, and if i give it full boost hard i can see it on the backoff.
I personally think a rear seal is goone in the turbocharger and there seems to be a more than usual amount of shaft play(its a bush bearing highflow), as i think i can see small burring on the compressor fins, and is a bit shiny where its been ever so slightly rubbing. Thing is, ive only had this turbo rebult in the last 7 months...which sucks.
The thing that stumps me is the intake piping is clean, if it the bearing it gone it usually leaks both sides right??
helpy??
cheers
Raz