impeller shaft play howmuch
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Freshman User
Joined: Sep 2003
Posts: 42
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From: canton GA
impeller shaft play howmuch
Yesturday at the end of an on ramp the trans up shifted RPMS came down and I heard that awful BUZZ sound a bearing makes, I went home and checked end play at the impeller shaft and there is a little bit of play how much is toooooo much
Elder User
Joined: Aug 2005
Posts: 763
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From: Dallas, Texas
Contact this dude. He is a god when it comes to hairdryers.
John C. Craig
(Considered one of the best Turbo Specialists)
Limit Engineering
Bells Island Cuwituck, NC 27929
Phone (919)232-3194
FAX (919)232-2149
John C. Craig
(Considered one of the best Turbo Specialists)
Limit Engineering
Bells Island Cuwituck, NC 27929
Phone (919)232-3194
FAX (919)232-2149
Post Fiend
Joined: Jul 2005
Posts: 14,582
Likes: 12
From: 21791
if you can push the compressor wheel (by the 5/8" head on the end) all around with reasonable force and NOT contact the compressor shroud at all, you will be fine. i checked mine when i rebuilt my turbo, and on the end of the shaft i had about .025" play RADIALLY. axially (in and out) i had .001" which was not bad, but optimum axial clearance is .000-.0005".
here are a few pictures of how i measured mine. sure it won't be as easy on the truck, but here is the basic idea-
http://img.photobucket.com/albums/v3...t/DSCF2871.jpg
here are a few pictures of how i measured mine. sure it won't be as easy on the truck, but here is the basic idea-
http://img.photobucket.com/albums/v3...t/DSCF2871.jpg
Senior User
Joined: Jan 2006
Posts: 156
Likes: 0
From: Southeast mi
Those are nice and tight, Im thinking if you have enough play to see it move you may have problems, say it gets warm then you might not have the clearence you might think when its cold, ....is there a certain number to go by when it is cold...
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FTE Leadership Emeritus
Joined: May 2001
Posts: 13,653
Likes: 6
From: Cabot, Arkansas
Radial end play can't be measured with a dial with the housings installed. Press and rotate on the radial shaft from both sides of the turbo, if either the compressor or turbine wheel contacts the housing the bushings are bad. The axial end play limits (according to Ford spec's) are .02-.10mm (.00079"-.00394")
Last edited by cookie88; May 10, 2006 at 08:11 PM.
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