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Preface, sorry about quality, pic taken with a potato.
Journal bearing, older 76gts
Thoughts on that? It will catch a finger nail but the wheel looks to be free from damage so IDK what to think. I can move the shaft slightly up and down but IDK how much play is allowed.
An out of balance shaft can make a whistling noise, the actual contact probably wont make noise. Or some problems with the impeller also make a whistle, ofton more noticeable during spool up.
I know the thread you're referring to, although i simply couldnt hear anyhthing in the video.
I think the impeller on my turbo NEW would hit the housing if you put pressure on it. But once the oil wedge gets around the shaft it should center itself.
OP this is one of the times when you shouldn't listen to everything you read on there Internet. Think about it for a second.. That turbo needs a rebuild. It's really that simple. You are risking a lot letting it slide. Just my .02
I know, and to be honest, it will get sent out for peace of mind. But, forced inductions said they won't touch it and I reeeeally don't want give it back to pte. Work turbos said he could rebuild and I have been talking to a place in Detroit that will do it.
What concerns me is either a) pte holds it hostage and says it's required to have $800 of repair b) shop other than pte cobbles together the rebuild cause pte doesn't sell rebuild kits
OP this is one of the times when you shouldn't listen to everything you read on there Internet. Think about it for a second.. That turbo needs a rebuild. It's really that simple. You are risking a lot letting it slide. Just my .02
Well certainly the first part of that statement is true.
I've seen turbos with markings worse than that run well beyond 200k. Many things can cause shaft movement during operation that may see some contact with the volute...it's no big deal.
Hell even my YSi did it, and it runs on a fixed bearing system so there should be...and was no play. But air moving back/fro etc can cause the blades to move. It's a simple reality and can have nothing to do with the condition of the bearings used.
And given JB turbos are already fairly loose to start with....really it is no big deal.
But by all means if it is a concern have it looked at...but as you say if they do come back with say $800 or so....how much is a brand new BW that will offer better performance ?
But I'd have no concerns running it and even if it fails it's no big deal unless it leaves you without transport.
[QUOTE=stevieturbo;19209138]Well certainly the first part of that statement is true.
I've seen turbos with markings worse than that run well beyond 200k.
Great advice! last post was 100k
Many things can cause shaft movement during operation that may see some contact with the volute...it's no big deal.
Hell even my YSi did it, and it runs on a fixed bearing system so there should be...and was no play. But air moving back/fro etc can cause the blades to move. It's a simple reality and can have nothing to do with the condition of the bearings used. And given JB turbos are already fairly loose to start with....really it is no big deal.
That's because they are riding a a cushion of oil! of course they are going to be "loose" when they are stagnate.. I mean come on man..
But by all means if it is a concern have it looked at...but as you say if they do come back with say $800 or so....how much is a brand new BW that will offer better performance ?
But I'd have no concerns running it and even if it fails it's no big deal unless it leaves you without transport.
You cant possibly be serious? No concerns running a compressor at 100k RPM that is making significant contact with the housing? You clearly have never seen what happens when a turbine blade makes contact and snaps off.
OP there is one thing that is clear as day. Its a hell of a lot cheaper to rebuild the turbo than it is to rebuild your motor. Risk vs. Reward
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