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what's shaft play 

 

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 Post subject: what's shaft play
Posted: Sun May 22, 2005 7:26 pm 
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what's shaft play

 

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Posted: Sun May 22, 2005 9:32 pm 
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Movement in a shaft, what ever shaft it is.
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Posted: Sun May 22, 2005 9:36 pm 
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bowsaw wrote:
Movement in a shaft, what ever shaft it is.


Shaft of turbo.

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Shaft play on a turbo.... well the shaft moves around... ideally it should be set and only able to spin, no up/down movement or side to side.... but as turbo's get used they get worn, and the shaft begins to move up/down side to side... and if it moves enough the blades hit the housing, and you loose performance, you loose booostability, response and so on, you could eventually loose the engine. A bit of shaft play is nothing to worry about.... you know that you need to get it recoed pretty soon...

 

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Posted: Sun May 22, 2005 9:53 pm 
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well a shaft is round and usually sits in bearing and the shaft spins
you get shaft play when the bearing or the shaft wears and the shaft can move in the bearing causing vibrations and is bad

 

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 Post subject: Re: what's shaft play
Posted: Sun May 22, 2005 10:07 pm 
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twr7cx wrote:
what's shaft play


Something you should do in the privacy of your own home.
Sorry, couldn't resist. :roll:

 

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Posted: Mon May 23, 2005 3:30 am 
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Non ball bearing turbo's need a bit of play as the bearing floats in oil on both sides...With oil pressure the shaft is held by oil.....
But check that wheel has clearance from housing....

 

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Posted: Mon May 23, 2005 8:14 am 
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Yeah, as above, but up to 1 mm up and down is fine on most turbo's, there should be no play in and out.
If theres been alot of up/ down play you will see scrape marks inside the comp housing where the wheel has being hitting... if really bad the sound like a siren while driving
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