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Rb25 Smoking In High Revs

mitchy_

By mitchy_,
in Engines & Forced Induction

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mitchy_ Grand Master

mitchy_

Posted
Posted

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?

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https://www.sau.com.au/forums/topic/157938-rb25-smoking-in-high-revs/
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R33GOD Grand Master

R33GOD

Posted
Posted
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

CruiseLiner Mentor

CruiseLiner

Posted
Posted

tuner was the problem i think hey mitchy :wacko:

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?

Cubes Grand Master

Cubes

Posted
Posted

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.

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