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mark houghton mark houghton is offline
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Join Date: Jul 2008
Location: Central Washington State
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Originally Posted by klefroid View Post
If there is no oil inside you will have more play... ''A specialist" told me if the propeller doesn't touch all is fine (when no oil inside)
Yep, these turbos use bushings that're purposely bored relatively loose...but when pressurized with a bed of oil, it allows the shaft to center itself and 'float' as it were, enabling them to spin up to those high rpms quickly. Even a brand new bone dry turbo will show some play, and that's by design. All measurements provided earlier have that in mind as to what is normal vs. excessive wear. As long as the turbine blades don't touch the sides of the housing, then presumably you're ok to run but may lose some efficiency due to excessive wobble. Sooner or later, it will wear enough to rub.

As to tight shafts....well now, it's been a long while. Not sure about the turbo WG dump pipe as being a suitable 'port in the storm' by any means, irrespective of the 930's wide hips.
Mark H. 1987 930, GP White, Wevo shifter, Borla exhaust, stock everything else. The result of a massive Pelicanite good will fire recovery effort. Truely an open book, ready for the slippery slopes to modification.

Last edited by mark houghton; 05-20-2013 at 06:24 PM..
Old 05-20-2013, 06:20 PM
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