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Old 07-25-2008, 12:58 PM   #1
Scooby Specialist
Member#: 129711
Join Date: Oct 2006
Chapter/Region: SCIC
Location: Camarillo CA,
1999 2.5 RS
Aspen White

Default possible turbo oil seal leak?

alright so i am eating a tad bit more oil than i should be ( a quart every+) 500 miles.

Motor: 2000 miles on Cobb pistons eagle rods cosworth bearings, cobb suggested clearance. I did not build this so i cannot verify exact specs.

turbo FP 20g with around 15,000 miles. minor shaft play. (possible oil seals)

There is Normal OIL in PCV's minor exhaust gas in oil fill,

when i floor it, once it hits boost and 5k+rpm there is visible smoke out the tailpipe, its not like a GI Joe cloud, but i can see it, honestly it looks more like fuel (black) then oil (Blue)

Have not done leakdown or compression numbers yet:

i am hoping this is the turbo oil seals as i really dont want to have another motor swap.

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Old 07-26-2008, 09:53 AM   #2
Scooby Newbie
Member#: 139287
Join Date: Jan 2007
Chapter/Region: SCIC
Location: Santa Clarita ca
2007 STi
black, Built By HB Speed


bump, anyone?
Thursday1999 is offline   Reply With Quote
Old 07-28-2008, 12:00 AM   #3
Scooby Newbie
Member#: 112943
Join Date: Apr 2006

Verify for oil on the turbo compressor output. If there is excessive oil accumulation your turbo seals might be gone. Perform a compression test anyway to double check there is nothing else wrong.
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Old 07-28-2008, 12:14 AM   #4
Scooby Specialist
Member#: 36652
Join Date: May 2003
Chapter/Region: NESIC

I'd go straight to compression test... those symptoms sound like combustion chamber problem. Start at cyl 4.


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