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Old 05-12-2018, 02:39 AM
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Squiggle Dog Squiggle Dog is offline
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Join Date: Jul 2008
Location: Surprise, AZ, USA
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Quote:
Originally Posted by BillGrissom View Post
Not sure what bushings post 8 refers to. Every part which touches the spinning shaft came in the $20 rebuild kit I bought. I think oil leaking past the shaft into the compressor housing could drip externally, if the housing O-ring doesn't seal perfectly. Otherwise, the oil would build up until the compressor wheel starts splashing it, then it would get sucked into the engine and burn.

I took the square cover off the waste-gate diaphragm in my Garrett. The diaphragm is a rubber membrane and appeared fine. Perhaps others are steel (post 8). I expect the waste valve is a metal-metal seal (didn't open) and don't know if a seal on the rod (probably just a tight clearance).
I believe the aluminum and steel housings have bushings/sleeves pressed into them which don't come in the kits. Or at the very least, if the housings wear out, they have to be machined and sleeved.

The metal part I mentioned is a gasket for the wastegate cover plate. My mind has been foggy and in a sleep-deprived state.
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