S475 TCT single

Burn Down

Hotrodder
Sep 14, 2008
7,092
28
48
Boise Idaho
Leaking out the up-pipe? Hmm, sounds like the engine side not the turbo... I would pull the up-pipe loose on the passenger side at the manifold and run it, see if any oil comes out the manifold.

Also, if there is no excessive play in the turbo I doubt it's leaking... Not impossible but doubtful.
 

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
I have heard of some Journal bearing Borgs needing oil restrictors to keep them from puking oil into the exhaust and compressor inlet side. Your sounds external but just something to keep in mind.

I'm coming off the driver side oil galley. I would think that would have been an issue right off not just popping up all of a sudden? I can't see the seal just going out on such a hardly used turbo. But stuff happends. I hope this is a simple fix but it just doesn't seem like it's going to be lol
 

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
Leaking out the up-pipe? Hmm, sounds like the engine side not the turbo... I would pull the up-pipe loose on the passenger side at the manifold and run it, see if any oil comes out the manifold.

Also, if there is no excessive play in the turbo I doubt it's leaking... Not impossible but doubtful.

What could cause such a big oil leak in the engine for it to be in the exhaust? I'm no expert on turbos I'll post a video of the play. My oil was pretty black for just changing it but who knows I've never known it to be super clean. It's usually black. It's had one change since the heads and probably has about 500 miles or so on the oil. The pass uppipe gasket is leaking but it's the only exhaust leak why it leaks out could be both sides.
 

02greysixer

Active member
Jun 4, 2011
1,829
7
38
North Central FL
Leaking out the up-pipe? Hmm, sounds like the engine side not the turbo... I would pull the up-pipe loose on the passenger side at the manifold and run it, see if any oil comes out the manifold.

Also, if there is no excessive play in the turbo I doubt it's leaking... Not impossible but doubtful.
It's comparing Apple's and oranges I know but I have a 6.0 p.s. at my house now with a fubard turbo that filled the whole exhaust with oil. From uppipes to manifolds to the actual exhaust pipe. No play on the compressor side but when I got it off I discovered the shaft was broken on the exhaust side and it was essentially just pumping oil out. It made a hell of a racket too though.
 

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
It's comparing Apple's and oranges I know but I have a 6.0 p.s. at my house now with a fubard turbo that filled the whole exhaust with oil. From uppipes to manifolds to the actual exhaust pipe. No play on the compressor side but when I got it off I discovered the shaft was broken on the exhaust side and it was essentially just pumping oil out. It made a hell of a racket too though.

I just idled it but I imagine if the up pipe has that much oil it's getting in the downpipe also. I'll check on that. The compressor wheel spins but seems slow even for idle. But that could just be my imagination. Thank for the tips we can speculate all day but now I have a few things to look for. I'm kind of curious at this point.
 

Evan@InglewoodTrans

yerp
Vendor/Sponsor
Aug 5, 2010
3,118
65
48
40
Western MA
What would be a way to troubleshoot that? Would it have to be disassembled? Doesn't seem sloppy as far as shaft play. I have some exhaust leaks to fix so I'm gonna pull it back off and check it out put on the new return line and all that. I mean it's dumping oil out pretty bad even at an idle. Then I hit my fuel filter on the trailer and drained out about 10 gallons of fuel. Lol bad night.

The best thing to do is pull the turbo and pour oil into the drain and see how well it flows. I installed a triple kit a few years ago that lost almost a gallon of oil out the exhaust on the test drive. At first we thought it was a bad charger but it turned out to be the bracket with the built in oil drain wasn't draining nearly fast enough. I've seen the same thing a few times since. Im not saying that is your problem but it could be.

On edit: I just saw you said its coming from the up pipe. Are you sure its not leaking from the downpipe flange and dripping down onto the up pipe?
 
Last edited:

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
The best thing to do is pull the turbo and pour oil into the drain and see how well it flows. I installed a triple kit a few years ago that lost almost a gallon of oil out the exhaust on the test drive. At first we thought is was a bad charger but it turned out to be the bracket with the built in oil drain wasn't draining nearly fast enough. I've seen the same thing a few times since. Im not saying that is your problem but it could be.

On edit: I just saw you said its coming from the up pipe. Are you sure its not leaking from the downpipe flange and dripping down onto the up pipe?


That's where it looks like it's coming from it was just a glance over while we got it loaded up. Pretty sure it looked like the up pipe. It's the stock return line cut and lengthened with a rubber hose. But like I said I've been driving this thing and this was a major change can't even drive this thing. Barely wanted to idle it on the trailer
 

Ed04zf6

Ed04zf6
Oct 21, 2012
19
1
3
Nh
Just a thought I had today, could the oil be leaking into your bell housing causing the clutch to slip also? I don't remember what that area of the bell housing looked like from when I did my clutch. If it had vents or anything.
 

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
Just a thought I had today, could the oil be leaking into your bell housing causing the clutch to slip also? I don't remember what that area of the bell housing looked like from when I did my clutch. If it had vents or anything.


I thought that too but I think it's only started leaking when it broke down on me 2 days ago. but I haven't looked at it and it is a possibility
 

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
I think The drain hole is above b the bell housing but could be seaping in. I'll be sure to look. My old 6.5 diesel I turned up the pump, when u take off the side plate off the pump the fuel drains into the valley and in the drain at the back and all over your clutch. So after I turned it up I had to brake clean the clutch through an inspection hole and wait til it all burned off. Could be the same scenario. But The clutch has slipped since day one.
 

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
I'm guessing it would be best to run my truck as little as possible. I think we're gonna push it in the shop with the tractor. Mostly so oil doesn't leak all over in the shop when it's running. Should get a look at it today.
 

zf>allison

you never had your car.
Apr 30, 2013
3,394
0
36
elsberry mo
Well unless Evans truck blew chunks of what looks like a piston into the turbo and trashed the turbine wheel I'd say it's not gonna be easy. Just the passenger pipe to. Which means I probably have a trashed injector and head I just had done.
 

Evan@InglewoodTrans

yerp
Vendor/Sponsor
Aug 5, 2010
3,118
65
48
40
Western MA
Well unless Evans truck blew chunks of what looks like a piston into the turbo and trashed the turbine wheel I'd say it's not gonna be easy. Just the passenger pipe to. Which means I probably have a trashed injector and head I just had done.

No trashed turbine wheel when it left here. I'm sorry to hear your having troubles.