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Location: Brisbane
Registered: February 2003
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Re: oil in compressor housing/new turbo
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Sun, 04 April 2004 06:21
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you need the oil drain exiting into the sump ABOVE the normal level of oil. If you pressurise the bearing housing and the oil is prevented from leaving the housing, that oil there will heat up and - even with the water cooling - fail to do it's job of lubricating the bearings and you end up with a $1900 door stop.
having the crankcase presured will only add to drainage problems.
it's essential that any forced induction engine is able to evacuate excess pressure from the crankcase. Cause if the turbo seals don't fail from this, then the front or rear engine seals will happily oblige.
sort your crankcase ventilation system first then the drain, then see if the oil pooling continues.
some of the more experienced turbo dudes here might be able to advise if the seals are stuffed if oil has been pushed past...
oh... i think that if oil leaked past the exhaust turbine seal from the bearing housing you'd have a fire, not just smoke. The smoke you see is form the engine burning up the oil introduced into the intake/induction system.
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