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Thread: Oil in rear turbo intercooler pipes.....

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    -BOOSTTD- verified Feedback Score 2 (100%) mh3kgt's Avatar
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    Thumbs down Oil in rear turbo intercooler pipes.....

    Ugh...so yesterday I took off my rear turbo pipe and noticed a fairly good amount of oil inside of it, as well as some oil residue around where the O-ring seats on the housing itself, probably explains my puff of smoke on decel :facepalm: So my question is: does this mean I need to rebuild my rear turbo now? How can I prevent it from blowing oil any further? I know it's far fetched, but could PCV system have anything to do with this? I really hate the idea of rebuilding a turbo with ~1k miles on it, but maybe it's time for the 19t upgrade while it's getting rebuilt ...too bad the wallet won't allow it

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    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    LMI strikes again?

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    -BOOSTTD- verified Feedback Score 2 (100%) mh3kgt's Avatar
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    Quote Originally Posted by green-lantern View Post
    LMI strikes again?
    Haha thankfully no....these were my stock 9b's converted to 15g by Markoverclock...wonder if they have any sort of warranty

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    1st ever COTM and COTY verified Feedback Score 9 (100%) green-lantern's Avatar
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    I would definitely check the PVC system and also possibly drop the downpipe and check for oil in it. How many miles are on the engine? Blow by can cause turbos to blow oil.

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    -BOOSTTD- verified Feedback Score 2 (100%) mh3kgt's Avatar
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    You guys are bumming me out lol the engine and turbos both were new 1k miles ago, I had the engine built with all forged internals, and turbos were converted to 15g's. The only place I see oil in the IC pipes is the rear turbo pipe, and I've checked the PCV valve to make sure it rattles, and it does. What else could cause this? I only get a slight puff of smoke right after I let off the gas, none at idle unless I free rev and a puff comes out as the engine settles back to idle

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    One day....it will be on 4 wheels. supporter Feedback Score 2 (100%)
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    I thought oil in the rear turbo pipe + oil cooler was normal
    Building a House, Car Mods on hold!
    1996 GTO, Owner since 2003.

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    One day....it will be on 4 wheels. supporter Feedback Score 2 (100%)
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    some say it has alot to do with breakin?

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    -BOOSTTD- verified Feedback Score 2 (100%) mh3kgt's Avatar
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    Hmm well I did break-in properly, so I dunno I may have to do a compression test and see what I can find

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    if the turbo inlet is oily it is coming from the crankcase breather. If engine is otherwise healthy get a catch can.

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    -BOOSTTD- verified Feedback Score 2 (100%) mh3kgt's Avatar
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    Quote Originally Posted by Forest Gump View Post
    if the turbo inlet is oily it is coming from the crankcase breather. If engine is otherwise healthy get a catch can.
    Yeah as far as I can tell the engine is very healthy and no other problems other than a puff of smoke on decel/between shifts, I think the oil is coming from the intake tube, when I did my clutch swap I noticed that oil was only in the rear turbo intake pipe attached to the stock bubble, the front side was bone dry, so I'm guessing that my PCV valve is not working properly or something, it rattles, but could still be bad. If the oil is in the intake pipe, it makes sense that the engine would be burning it from there, as well as it getting through to the compressor side and out into the rear IC pipe. To do it correctly would I need 2 catch cans? I'm not entirely sure how to set one up to feed off of both heads...links or pics would be welcomed

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