I noticed today when doing my oil change that somehow the turbine housing has free'd its self from the exhaust housing/center housing. It still holds boost fine and by no means does the turbo feel like its falling apart. I tried to tighten the 5 12mm bolts that secure the housing together and they were already tight?

I read not to long ago that the ring/plate which actually is bolted against the turbine housing may after normal wear and tear looses its abilities of holding force.

Any insight of this is well appreciated.

 

pic?

 

here is one I just grabbed off google.great picture for it shows exactly what im talking about. My ring is not in pieces like this one but you get the idea. Im hoping I can pull the ring off,and build up the back side of the ring with a very thin and clean tig bead that away it puts pressure against the exhaust housing and thus,causing it to hold in position.

 

oh so your saying the lockign rings (two pieces) are bolting to the turbine housing fine but there not holding it to the center section because the material on the center section has worn out. Yeah you can do that or bolt it all back up and put two tack wels to hold it in place. small enough to grind off but will hold in place.

 

Well I havent taken it apart yet but thats what im thinking is the problem. The backplate is a one piece however so I cant really just take it off and built up the material on the ring. I may end up sending it back to turbonetics to have it rebuilt,ive had it only 13,000 miles though

 

I've never had anyone else experience that. that could mean vibration is wearing it thin. Is there "gap" b/w the turbine housing and the cartridge now? I'm very curious about this as it seems as though the bolts simply weren't tightened down enough to lock the rings in place. I notice the white ash on the bolt showing that it was not tightened all the way

 

I've never heard of it either, OP are you usre those werent bolts holding the locking rings were not loose? Im willing to bet they were loose or loosend up and then the play cause the wear on the CHRA

 

Well they were tight when I checked on them so im not exactly sure the cause,perhaps there is not enough flex between my charge piping and turbo. In which case when ever the motor vibrates the turbo is put in a bind between the charge pipin and the manifold itself.

Whatever the case I fixed it yesterday at work. It was as I expected the ring was worn down pretty badly. I planned to just use some temporary spot welds and order a new on from Turbonetics but ended up making a new one my self.

Im a machinist at the shipyard and this is my end result, 414 stainless.

 

Looks good, great idea to use your own skills instead of purchasing, probably have a better end result with yours than oem ones

 

haha it was a bitch to make. I didnt intend on using 414 stainless but once I made the first cut on the lathe there was no turning back. 414 is some tough as steel.

But ya the ones from turbonetics dont give as much of a step. I put a 1/64th of a step 7/32nds large on the inside diameter to actually push push off the turbo instead of pulling it in.

 

good idea