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Smoking B4 twin turbo

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#1 BlackB4RSK


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Posted 16 April 2018 - 09:28 PM

Good day

Some might recall last year I posted my 02 B4 twin turbo RHD to LHD conversion job. I now have a big problem with blue oil smoke at all engine RPM. Its not much noticeable at Idle but wring out the engine and it smokes like a banshee, worse when your driving it as it throws out a plume of smoke. I messed up a bit when doing the conversion as I initially installed the primary turbo way down in the engine bay in order to clear the steering shaft in the LHD conversion. In doing so I did not make allowance for the fact that the oil waste is gravity fed back to the engine and so I flooded the turbo.

Having now rectified this by elevating the primary to a near standard fit position I started the car and started having the oil smoke issue. It was terrible at first but quietened down eventually to where it only smokes at higher revs. 


So I took off the primary and using an Ebay rebuild kit overhauled the VF31. i believe I did it correctly but I am not seeing much improvement. It has reduced the smoking but only slightly. 


Now the car may be 16 years old but its only done 25k miles having been in storage for over 10 years. My question is. Are my problems definitely the primary turbo or could there be other issues that could cause this smoking?. Could it be my valve seals or worse piston rings?. I certainly hope not but would like some advice before I start stripping the engine to bits on an unguided search mission.


The other thing I noticed is that the car revved with much higher alacrity before my conversion, Now is much slower and with more vibration.  


Any help would be much appreciated. 


P.S. I also had the Silicone inlet pipe header conversion as the old plastic pipe had cracked at the connection to the Primary turbo.

#2 duncanm


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Posted 17 April 2018 - 07:18 AM

intercooler still full of oil from your turbo shenanigans ?

#3 El_Freddo


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Posted 17 April 2018 - 02:46 PM

I'd imagine that you should be able to track this relatively easily by looking at the turbo dump pipes and the exhaust at the heads to see which is more carbonised from oil burn/leakage.


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