Turbo oil blow by

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J

Jan-78FJ40

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Sep 6, 2002
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How much oil gets by the Turbo bearings, and how much is normal?
I have oil seeping out the hose connections from Turbo to engine intake. Not a lot, but enough to stain the side of the engine...
It is a 2H with a turbo glide kit, and I run 9#s of boost.

thank you,
Jan
 
Do you have much oil consumption in the engine? Like you are topping up between oil changes?

I think all turbos will have a small bit. Looking at removed engines in the wreakers I saw quite bit of this. Even the turbo I removed off a Merkur engine for my project had oil in the intake(pressure side) hose.

Where is the crankcase breather tube hooked up? On my 3b there is a downpipe which misty oil will come out of occasionally, on your 2h is that pipe there and hooked up to the intake(prior to turbo)?
 
brownbear said:
Do you have much oil consumption in the engine? Like you are topping up between oil changes?

I think all turbos will have a small bit. Looking at removed engines in the wreakers I saw quite bit of this. Even the turbo I removed off a Merkur engine for my project had oil in the intake(pressure side) hose.

Where is the crankcase breather tube hooked up? On my 3b there is a downpipe which misty oil will come out of occasionally, on your 2h is that pipe there and hooked up to the intake(prior to turbo)?
Click to expand...

I don't top up between oil changes, and there is no apparent oil loss. But then the engine takes almost 12 quarts, so if I lost half a liter, I would not notice.
Oil pressure is always good.

I know the blow by tube in the 3B, but I don't recall it on the 2H-need to check.

thank you,
Jan
 
I am no turbo guru, but I think I would wait till I saw a noticeable oil consumption before I felt an overhaul was due on the turbo.

I love how Toyotas barely use oil. I had a ford that drank it.
 
It is normal especially for a diesel turbo to have a little blowby (slightly wet inside the intake but no pools of oil). Slight seepage from the connections is ok but if it becomes alot check the intake hoses for oil puddling up inside. Like brownbear said before if you aren't losing a lot of oil it probably isn't that bad.
 
I got this as response to my question form the Turbo Glide staff:

Hello Jan,
Oil is from breather entering air-intake from rocker cover, this is normal
as the mist is condensed and pressurised again into turbo cross-over.

Rgds,

John



so all seems normal :)
thanks all,
J
 
I have a little blow by on mine.
Not every much. But I noticed some when I put my boost sensor in.
There is no noticable drop on my dipstick.

Cheers,
Nick
 
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