Bulent Aliev wrote:

"I took my (ex Rusty's) turbo apart this evening. The bearings seem to be in
fairly good shape and the shaft looks ok. It looks like the compressor wheel
just "came off the end" of the shaft, much like the other one did. My
uneducated guess would be that I overspeeded it.

By the way, I was showing 38 MAP at 11,500 ft with the wastegate fully open.
However,  there's an open 1/2 inch air bleed on the intercooler (to be
closed off) and a blow off valve, so the turbo may have been putting out
much more than the MAP showed.

John Slade
Rotary Cozy IV"

This is not making much sense Bulent. 38" Hg MAP with the waste gate wide open AND
a 1/2 inch hole in the intake manifold? Something is wrong with these "facts".
Does John have a TIT or TOT gage? It is possible the turbo is over speeding
due to no load on the compressor but you would not see 38" Hg IMHO at the same time.
Are you sure John has a 90-91 turbo and not a 87-88 turbo?

Dave Leonard please check and see if you get 38 MAP at 11,000 feet with the
waste gate wide open. Briefly! :)

Paul Lamar
 
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