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WH1C Installed, some smoke.

DieselSlug

DieselSlug

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Got the WH1C installed yesturday upon start-up everything seemed normal. But one thing i did notice was if you reved the truck up to about 2k and let off a puff of greyish blue smoke would come out then clear up. This would keep happening if you kept doing it. Ended up taking it for a short ride. Was watching boost and smoke out the tailpipe. Boost is definately set too high, i hit 5 psi pretty easy so the gate needs adjusting. It would also have a puff of greyish blue smoke when driving, by letting off the accelerator. Pulled back into the drive way and had some smoke coming from the turbo went to check it out and had wet spots on the down pipe, the EGT's were a little over 200 degrees and got up to 600 on the ride. I think i messed something up rebuilding this turbo? I think im dumping a little oil out into the exhaust (cause of puffs of smoke and wet spots on the outside of the down pipe). Im guessing the oil is leaking out of the seam where the down pipe bolts to the back of the turbo. I checked the return fittings and they seem dry. I havent had time to take the elbow off yet to check inside to see if there is oil inside the down pipe, but im going to take a stab at that next. Any suggestions appreciated!
 
Could be the intake or exhaust side of the turbo ?? I know it would be some trouble to do but you could remove the exhaust housing and leave the oil return lines hooked up and idle it to see if any oil comes out around the blade area of the center section.
 
I took the intake off to check there and i dont see anything. I think if it is leaking its coming out the exhaust side? Man that truck would be loud with no exhaust lol. Almost seems at idle there is little to no oil noticeable but more at changing RPM. I am hoping i dont find oil in the downpipe.
 
Kinda sounds like the oil seal on the exhaust side is leaking. Might have broke or bent as you put it back together . I've seen that happen already.
 
DieselSlug said:
I took the intake off to check there and i dont see anything. I think if it is leaking its coming out the exhaust side? Man that truck would be loud with no exhaust lol. Almost seems at idle there is little to no oil noticeable but more at changing RPM. I am hoping i dont find oil in the downpipe.
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The intake side has some outside pressure, the exhaust doesn't I think you will find a leaking seal....

I have a oil priming tool that will pressurize the oil system just like running the motor if you want to use it, you can take the housing off and use a drill to turn the tool and see if you have some oil seepage from the housing without the motor running.... if you want it, just pay for the shipping both ways and use it...
 
How do these Holsets restrict (if any) oil flow. At the turbo fitting or block? Too much volume and pressure to it maybe?
 
I'm not sure about the "HOW" part, but my real Holset does restrict the oil, you can remove the oil feed line and use a air gun and blow into the feed fitting and it is restricted out the bottom....
 
3500GMC said:
How do these Holsets restrict (if any) oil flow. At the turbo fitting or block? Too much volume and pressure to it maybe?
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I was also worried about that, but so many others have done this without issue i figured it wouldnt be the case for me?
 
sctrailrider said:
The intake side has some outside pressure, the exhaust doesn't I think you will find a leaking seal....

I have a oil priming tool that will pressurize the oil system just like running the motor if you want to use it, you can take the housing off and use a drill to turn the tool and see if you have some oil seepage from the housing without the motor running.... if you want it, just pay for the shipping both ways and use it...
Click to expand...

Thanks for the offer, might have to try it if i cant find any obvious reasons.
 
Also make sure your drain is good and open as a restriction there will push it right out the exhaust.
 
Another thing i did when rebuilding was that i re-used one of the old clip rings. I believe it was on the exhaust side too! When i put in the new ring the turbine assembly seemed like it was a tiny bit tough to turn. Is this normal on a fresh rebuild? Maybe i should take it back apart and install the new one and hope for the best? The assembly turned much easier with the old c clip in there, so that was my logic in doing it.
 
Here is a picture of the ring i re-used on the exhaust side. Its weird i guess i don't get totally what acts as the "oil seal". This ring is like a plastic c-clip. It fits into the groove you see on the thicker part of the shaft.
 

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3500GMC said:
Hmmm, did you do a boo-boo? :D

:agreed:
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At the time i did it i felt i was doing right lol. When i installed the new clip there i didnt think the "tightness" of the turbo was right. I figured it should spin pretty freely?

I guess im gonna remove the exhaust elbow to see if there is oil inside, if there is then i think im goign to try and replace this clip and try to run it.
 
Well keep in mind turbos don't use a seal per say, they use a slinger as I don't know of any seal that can withstand the high temps a turbo sees. So if teh drain doesn't drain EASILY, then the oil can't sling off and away and gets forced out the shaft. And if you feed it to much oil, it can't drain it off fast enough.
 
Took the exhaust elbow off the turbo and compressor housing off. There was a small puddle of oil in the compressor housing. Also looked like some was seeping out of the exhaust side too. Guess i failed at rebuilding this thing. Hopefully i can get it torn apart and check everything over..
 
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