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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 .

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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?

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).

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.

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