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I believe it is since its a journal bearing? but not 100%. I watched a few videos on replacing things which seemed straight forward but you have to time the turbo which I didn't understand from the videos.
One of the vids said to be sure that the compressor wheels is install in the same position relative to the turbine wheel to keep the same your balance.
I am going order a repair kit from AGP. There is a standard but I will get their upgraded kit for better oil flow. https://agpturbo.com/s200-rebuild-ki...degree-thrust/
I can machine my own bushings if they weren't available. The culprit for the excessive shaft play is due to the bushing/bearing on the right. Major coking all black. That's the one on the hot side. Worn in the center more so then the cold side bushing.
Sometimes I wonder if it cause issue for the turbo after each dyno pull without cooling it down properly before shutting off? General rule 1-5 mins idling is recommended I read from Hot Rod article?
I guess it is to be expected from a 45k miles S256?
45k miles out of an S256 seems pretty good. I've been curious as to what sorts of mileage people get out of aftermarket big turbos; it's not something you hear a lot about. I think I'm around 30k on my PT5556.
That's an interesting setup on your oil feed. Is the T for a pressure sensor/gauge? Curious about all the other fittings too. Just working with what you had or do they serve a specific purpose.
45k miles out of an S256 seems pretty good. I've been curious as to what sorts of mileage people get out of aftermarket big turbos; it's not something you hear a lot about. I think I'm around 30k on my PT5556.
That's an interesting setup on your oil feed. Is the T for a pressure sensor/gauge? Curious about all the other fittings too. Just working with what you had or do they serve a specific purpose.
If I couldn't rebuild my s256, I was tempted to get their AGP ball bearing S256.
The T is for my recently installed turbo oiler. A timely mod that will protect the new bearings.
Ok. Just noticed this is a little odd. I'd noticed that the hot side bearings with approximately. 020" smaller oil orifices? Can someone explain to me why that is? Restrict oil to the side that is more critical then the cold side?
Could this be the reason why that bearing is so coked up and had more wear? Confused!!
According to the pics on AGP, both of the bearings has the same size oil holes. Something is not right here. I will confirm this when I get the new bearings.
