Rb20Det Blowing Smoke On Idle Help!

[tobs_r32]

Hey all i've had this car for about 6 months now and the entire time it has been on and off pouring out with white smoke from the exhaust pipe when idling!!

Here are the details:

1989 R32 GTS-t, RB20det, FMIC, 3' exhaust, catch can, greedy boost cont. (12psi)

Brought the motor with a blown headgasket blowing white smoke on idle and when i pulled the head off it had blown a hole through one of the exhaust valves and ruined the first piston bore..

-Tracked down a 76000k unflogged rb20, installed it transferring over:

-Intake manifold/injectors

-Turbo/manifold

-Rocker Covers

-Coilpacks and kept all the wiring and FMC, CAtch can etc. attatched

Ran motor in, still blowing white smoke on idle once warm Assumed the turbo was blown so installed an RB25 turbo in what seemed decent condition with some shaft play.

Turbo ran fine and held boost awesome, but then got back home and the car started blowing the smoke again!!

Pulled the catch can out and it had water and oil in it so flushed that out and also installed a brand new 3' stainless exhaust and cat from the turbo back! (The old pipe was full of sludge!)

No smoke for prob about 3 or 4 days with about an hours driving each day until today it came back just as bad!!

Mechanic seems to think its the turbo but i'm finding it hard to believe that two turbos and two motors do exactly the same thing??

Any help would be AWESOME

Thank you

[DVS JEZ]

Its possible. The turbo is 2nd hand. Check the oil drain from the bottom of turbo to engine isnt kinked or blocked.

[tobs_r32]

The oil line from the bottom of the turbo?? Is it possible it was blocked from the blown headgasket and turbo from the old motor??

[SECURITY]

is your PCV connected/working properly?

[boostn0199]

Mine just started to blow abit of smoke On idle now in cold weather since i removed my cat, cant find any other issues for it. Can it be due to hotter exhust temps?

[tobs_r32]

I Don't have a PCV valve because of the catch can, i had a straight pipe on the first motor but then changed to a 3' stainless with hi-flow cat and it is still smoking!!

[SECURITY]

try run the plumbing of the breather system back to COMPLETE stock form - that includes the PCV.