There was a nice box of turbo parts waiting for me when I got in from work.
I decided to go for a new bearing housing and back plate as they were cheap plus some of the tolerances of the original parts were a bit questionable.




I got straight on with it and cleaned up the comp and turbine.




this little stepped seal is a nice little upgrade for the turbine side. It should allow better oil retention when using a low back pressure exhaust system. I.e. a 3.5” downpipe into a free flowing 3” system.




I soaked the journal bearings in some of John Deere’s finest oil




There’s 4 circlips that hold the 2 journal bearings in place, the 2 centre clips are a PITA to locate properly.



then I placed the first half of the thrust bush on the journal bearing followed by the 360 degree thrust washer and sealing ring. Having a 360 thrust washer over a standard one just means it can withstand higher boost pressures for longer without wearing it out as quick.

Then on the back plate there’s the other half of the thrust bush with the front oil seal.
It isn’t pictured because it just a normal one, there’s no point in having a stepped seal on the comp side.



bolted the bearing housing to the back plate




then slipped the turbine shaft in with the turbine shield, through the housing. On with the comp wheel lined it up and pinched the nut up.




There we go one CHRA. Just need to clean up the comp and turbine housings, but that can wait for another day