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Turbine shaft seal issues....Advice Please

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VTEC KILLR

15+ Year Contributor
134
1
Sep 9, 2005
Portsmouth, Ohio
Ok I purchased a blown e316g and am attempting to rebuild it to save a little cash. I purchased a good rebuild kit, and was following the write up by Jusmx in the tech section, but i am having some issues with the turbine shaft seal.
I have included some pics....
The seal just seems to large to fit in the groove. Everytime i go to install the shaft in the center section it pushes the seal all the way against the turbine wheel. I have checked and the grooves in the center section appear to be clean. I scraped the crap out of them. Any ideas or hints would be much appreciated. I need to get this thing going.
First pic is where i begin to install.
Second is how easy it pushes back.
Third is the center section.
The last pic is to just show the size of the seal compared to the gap.

Thanks
 

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where did you get the rebuild kit from? that is definitely the wrong seal. I would call were ever you got the kit from and talk to them about it and them getting you the right one. I remember when i get my kits they come with two different size seals one that is the right size and one larger.
 
yeah the other seal ( for the oil shield ) in the kit is much much smaller. There is no way it would fit over the shaft to fit in the groove with out tearing the crap out of it.

here is the difference......
 

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Here is how mine looked once installed, IIRC it was the bigger seal.
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Are you using plenty of lube when installing it? Have you tried fitting it into the center housing yet? I know mine stuck up a bit but once pushed through they compressed and fit into the grooves.
 
Yeah im using plenty lube....My oil seal that i removed from the turbo is the same size as the small one in the kit......I will take another look at it, but i'm pretty sure that i will demolish that small seal trying to get it over the shaft.

Thanks for the pics...it does help me out.
 
There's nothing wrong with the seal....that turbine is JUNK.

Not only is your shaft grooved horribly where the journal bearing goes, but look how the excessive shaft play rubbed the turbine seal groove shut:

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Compare to the seal groove on a NEW turbine:

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You'd better hope the sealing surface on the center housing didn't sustain damage from the turbine like the turbine sustained damage from the center housing...otherwise you bought a paperweight.
 
NICE.......I thought the groove looked a little wore........
 

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I bought a similar t25 kit from the same guy with the same problem you're haveing. Mine only came with the one oil seal as well. No matter how much i cleaned the grove it wouldnt fit. I could fit it together but there was definate friction and binding. I eventually set the turbo on the shelf and left it. After a month or so I got borred and did some home machining on the groove so it would fit without contacting the shaft. Worked for a 4 or 5 thousand miles, but i cant say ild recomend it.
 
Trust me, there's nothing wrong with the seal.

The seal groove gets rubbed shut from hitting the center housing due to excessive shaft play, and the result is the turbo cannot be rebuilt until the shaft is replaced.

Andy, your old 5027E had a similar issue when you first sent it to me for the initial rebuld....the shaft was also bent, so it obviously needed replaced anyway- but it could not have been rebuilt with the groove pinched shut like that.
 
Yeah....The seal i removed was smaller, but definately wore, but im with
Jusmx141 that shaft where the seal rides just didnt look right. I will probably have to get another shaft and take it from there. The rebuild kit seems great i was just having big issues with that turbine seal....and now i guess i know why......Jusmx141 i PM'd you about a shaft.....
 
I had to edit my last post. I remebered how i ghetto machined my turbine shaft. I put the old journal bearings in a vice and lined them up so i could put the shaft through them. I pured oil on the saft and journals and used my compressor to blow air at the turbine wheel. With the wheel spinning i used a cutting disk to clean/shave down the groove. Presto, no binding. It was the turbine shaft as the root cause of the problem in that case as well.
 
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