Rb25 Smoking In High Revs

[mitchy_]

took my car to the drags the other night.. and just as it came on boost in 4th gear, it start blowing white smoke..

didnt do it for the first 3 gears, didnt do it for the burnout before the drag, just in 4th gear...

it has done it once before on a cruise, booted it up a hill and it blew a bit of smoke just before limiter.

its a relatively stock RB25.. exhaust, pod, fmic, 12psi boost...

from what ive read/been told, it sounds like a turbo seal?

the car 'seems' to drive relatively fine (havent driven it fo a few months, after i just had a new engine put in, but its the turbo off my old engine), but i cant feel and 'struggling' and it hits 12psi fine.

any thoughts?

[R33GOD]

took my car to the drags the other night.. and just as it came on boost in 4th gear, it start blowing white smoke..

didnt do it for the first 3 gears, didnt do it for the burnout before the drag, just in 4th gear...

it has done it once before on a cruise, booted it up a hill and it blew a bit of smoke just before limiter.

its a relatively stock RB25.. exhaust, pod, fmic, 12psi boost...

from what ive read/been told, it sounds like a turbo seal?

the car 'seems' to drive relatively fine (havent driven it fo a few months, after i just had a new engine put in, but its the turbo off my old engine), but i cant feel and 'struggling' and it hits 12psi fine.

any thoughts?

white smoke isnt a good sign, probably burning oil due to a turbo seal

[Cubes]

Why did the last motor let go?

Have you rectified the problem that caused the last motor to let go? Fuel pump? Injectors? AFM? Poor Oil Supply?

Motors don't usually just let go for no reason.

[CruiseLiner]

tuner was the problem i think hey mitchy

still got the smoke issues? it didnt look good on that cruise and its weird its only in 4th gear or high rpm. if u come down to this end of the woods i can do a leakdown test and comp test on the motor as i just bought a leakdown tester. this will show if the motor is good or not. how hard are 25's to get plugs out?

[MBS206]

It's not hard, just a touch time consuming.

[mitchy_]

yeah.. was a 'tuner' issue that blew the last motor..

thought it might be turbo seal, what can i do to be 100% sure its the turbo seal, without ripping anything apart?

[Cubes]

Even with the turbo off it can be difficult to determine if it is the turbo seal.

Sounds almost as if oil is dumping through the system at high rpm.

Mine would fill the cam covers after a hard 7000rpm run and ploom smoke out the exhaust as I had no catch can.

[mitchy_]

the new engine only has the 'U' pipe between the rocker covers, no breather via a catch can, or back to the intake..

could that cause it?

[Cubes]

Sounds like a dodgy setup.

First place I would be looking.

[mitchy_]

i had a spare return pipe floating around (cant for the life of my find my catch can...) and it *seems* to be better, but its a bit hard to hit high revs in 4th gear to try it out...

[mitchy_]

well.. its still smoking with the vent in the rocker covers..

leading me to beleive its a turbo seal