Blue Smoke After Idle

[gL3nJaMiN88]

Hey guys and girls, I currently have a rb25 that has been rebuilt from the ground up less then 1 year ago , the engine could possibly have around 15,000 on it now .

The issue I'm having is blue smoke out the exhaust ONLY when the car has been sitting at idle hot or cold for a period of 5 minutes or more . After a big rev it won't come back till it sits another 5 minutes or so . When driving the car I cannot see anything and my friend said he can't see smoke while I'm driving / thrashing it when he follows .

Engine currently makes 300rwkw on 18 psi and drives / runs smooth ? Should I be worried and what can cause this issue ? It's in no way blow by because my catch can setup is correct and has no traces of oil at all !

Some help with this situation would come in handy so I can stop chocking everyone out lol . Also forgot to say the car has not chewed any oil since service 2 weeks ago and oil is still gold .

[DVS JEZ]

valve stem seals must be leaking, did you replace the stem seals and valve guides when you rebuilt the engine

[hypergear]

Steam valve seal only leaks on cold. I think its a turbo related issue. check shaft play, oil drain, breathers, and make sure engine is not over filled with oil.

[gL3nJaMiN88]

Its a 4 week old Garret GTX35 turbo and I called gcg they told me it cannot be the turbo ? Ah this thing is mind boggling every mechanic

[DVS JEZ]

did it do it as soon as you installed the turbo?

do they require different oil restrictors for the GTX35?

take the dump pipe off and have a good look around the turbine

[kwickr33]

any chance posting your dyno sheet? very interested to see what the GTX35's power curve looks like. Cheers

[Sunkist]

did it do it as soon as you installed the turbo?

do they require different oil restrictors for the GTX35?

take the dump pipe off and have a good look around the turbine

The GTX35's come with a restrictor on the core suitable for themselves dont they?

[SECURITY]

if GCG's over the phone, uninformed investigation says it cant be the turbo, then it must be the turbo /sarcasm. if you arent getting blow by and if your intercooler piping isnt full of oil then my guess is its the turbo. oil could be pushing past the ring that is meant to seal it (not sure what its called).

[horrace]

I had these exact same symptoms with my old sr20, thought it was the old standard turbos oil seal leaking but I bought a new 28/71 and ba bow still blew smoke after extended idling, it was valve stem seals.

[luvpsi]

check the turbo if not turbo must be valve stem seals. i used to be an engine rebuilder and we had this problem often. even they are new stem seals and they were not installd correctly such as burrs on the valve stems when installing them knicking the the seals. but def sounds like sem seals with the symptoms you are telling us. if it was turbo related id say it would pretty much constanly blow smoke.