valve seals? turbo seals?

[Boostified]

Ok so my car doesn't smoke on cold start up. Or idle only after I let off from boosting. And its been getting worse. It will cloud the whole hwy.... Any ideas?

 

[bryanwheat]

Sounds like the seals in the turbo if it is doing it after boosting and fogging up the road.

 

[Colt4G63 also]

Valve seals....

EDIT: Or turbo seals.

 

[Mrdiamondstars]

Probably turbo seals if it happens after you boost or it may be running too rich

 

[Boostified]

###### dont help its a 16g on 38 psi

 

[JusMX141]

^ Say what now? WTF

If that's an honest boost level, your thrust plate is gone.

 

[Boostified]

well dsm link said it was at 41 and I have 1050 cc FICs and they are at 102% duty cycle..... I quit driving it

I also shoot oil out of my dipstick. and it comes out of the oil filler cap too. I tried crimping the dipstick tube but it didnt work much. and I put another gasket on the oil filler cap and it didnt help, a thrust plate wouldnt cause it to burn that oil though would it?

 

[JusMX141]

a thrust plate wouldnt cause it to burn that oil though would it?

Most likely, considering the factory thrust system on a MHI turbo was designed for a target boost level of 12-18psi. Hell there are guys melting factory thrust plates as 22psi, I can imagine what yours looks like.

When the thrust plate fails, the collar digs deeply into the plate and eventually the wheels rub the housings. Under boost, there is a tremendous load pulling outward on the compressor wheel as it tries to draw in air. The more air it draws in and compresses, the higher the thrust and shaft loads.

I'm willing to bet your thrust plate is trashed and the turbo has a ton of in/out play. This movement has worn the compressor and turbine seals (which stay fixed in the housing) wafer-thin, allowing hot exhaust gases and boost pressure to enter the center housing, which is pressurizing the crankcase and blowing out your dipstick and filler cap.

If you remove the intake and find a massive amount of in/out play, it's pretty safe to say the turbo is junk. The money you'll spend to repair it would exceed what you'd spend on a good used replacement.


Try backing off the boost a bit, or switching to something that has a little better efficiency at higher boost levels if that's the boost level you're wanting to run. That 16G has to be pumping an insane amount of heat at anything above 25psi- I have no clue how you're not detonating your engine to hell unless you have an intercooler the size of a refrigerator.

 

[Boostified]

well I took my intake off and there was oil sitting at the bottom of the intake housing... and there is alot of in out play. Im just gonna buy and FB red and move on

 

[JusMX141]

Yup, it's junk to the point where it's not worth fixing.

PM me if you'd want to sell it for parts once you upgrade- the turbine housing and actuator are still useful to someone like myself.