Rich wrote:

How long until a turb needs rebuilding & what exactly needs replacing
?

Rich

Good question. I have no answers yet. I imagine it depends on what
temperature you run it at. I would opt for water cooled bearings
as they seem to help.

Paul Lamar

I've seen some sketches of oil cooled bearings. These may be better
than the water cooled. What do you think?

Rich

Can you buy them? Water cooled bearings are a common option on Garret
turbo's.

Paul Lamar
 
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