babaz7

hi, i have two valve seals leaking on the exhaust side, the oil goes into the exhaust manifold and then into the turbo, will this seeping of oil into turbo through the manifold cause damage to the turbo or seals?

barneyb

A bad valve seal dumps oil directly into the cylinder and then the oil makes it way to the exhaust manifold.

I've seen photographs of turbos containing so much carbon that they could no longer spin. This was attributed to turbo seals leaking. I suppose the same thing could eventually occur if enough oil was fed into the turbo.

Is there a reason why you don't rectify the valve seal problem?

2006EvoIXer

iTrader: (1)

It could build up on exhaust turbine wheel and slow your spool. It could also make wheel off balance and accelerate wear on bearing. Are you topping off your oil weekly? Also, how is your cat and front oxygen sensor working with the extra layers of oil buildup? Have you priced the front oxygen sensor?

babaz7

i just got the seals a few days ago, im in middle of a email tuning session actually, i will fix the problem when the tuning is done,otherwise i know with experience that if you stop communication with your tuner for a few days, who lives in another country they never bother replying or tell you that your slot is gone, thats why.

babaz7

yes, iv'e been topping off oil regularly because its going down so much, front oxygen sensor seems to be working fine but i do have smoke coming out of my exhaust obviously due to the leaking valve seals.

2006EvoIXer

iTrader: (1)

Finish the tune and replace. Watch your boost and AFR after replacing valve stems. If your turbo has buildup, it should slowly burn off and turbo can go back to normal. Hopefully, your tuner accounted for the normally faster spool and higher boost. Make sure your tuner knows what's happening with your engine. Tuning on an unhealthy engine is a bad idea.