Jump to content

B12 turbo 1216cc oil wet inlet valves

Recommended Posts

Just quicky anyone cine across this wet inlet valves,  puff smoke when rev,d at idle. Fresh built. Busa slugs fresh bore new stem.seals oem!  New turbo (Not chinky) Makes great power no issues there. Just wet oily inlet valves? Heads up anyone.cheers Fula.

Link to post

Could be ^^^ but more likely (in my opinion!) too much oil pressure to turbo / drainage from turbo.

It gets past the bearings, into airflow and coats the inlet tract. Mine does it and it coats the insides of the intercooler as well - at least the aluminum won't rust!

I have really choked down on the oil feed to the turbo - 1mm jet - but it still does it and at present I can't be arsed to sort it!

  • Like 1
Link to post

Ta boys , yes bike in question had oil restrictors I fitted ,Removed as a turbo specialist from car place told owner turbo was getting to hot.!!!  Anyways he's putting those back in. And replacing valve stem oil seals with vitton ones, Guides are ok as motors only covered 11k . Just odd one for sure. Thanks again for replys.

Link to post

OEM valve seals are usually the 'gold standard' - aftermarket ones usually cause problems / wear out prematurely!

Car turbo specialist - there's an oxymoron. The adequate dribble of pressurised oil won't do 'jack shit' for cooling - they are designed to run at and in excess of 900 deg. of course it's hot - thats how they work!

Link to post

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.

Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...