Shaft Play -- How much is acceptable
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This is a discussion on Shaft Play -- How much is acceptable within the General Maintenance, Troubleshooting & Accidents. forums, part of the Tech & Modifying & General Repairs category; So I did my normal searching of topics and it seems there's only subjective advice on what constitutes an acceptable ...

  1. #1
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    Shaft Play -- How much is acceptable

    So I did my normal searching of topics and it seems there's only subjective advice on what constitutes an acceptable amount of shaft play on a stock turbo when the turbo is off of the vehicle. I am asking because I purchased a used turbo from a junkyard to replace mine and need to know what constitutes "a little" and if I should exchange this one for another before putting it on.

    It's a stock '02 WRX turbo and I'd say the shaft has somewhere in the realm of 1/16"-1/8" of movement, but only longitudinally ("in and out"). The impellers touch the housing -- and you can hear the requisite "ping" of them touching -- when you spin it. But when not touching -- what I assume will be oil-pressurized -- it spins very nice. Can anyone let me know if this bad boy is good? Thanks.

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    He simply abides. SD_GR's Avatar
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    The impeller should not touch anything. Lateral play in-out is tolerable but I don't know to what extent. This means a little is OK, a lot is not, and I can't tell you what "little" or "lot" actually mean. Movement up/down is a show stopper, unlike slight play in/out.
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    I was told more than three shakes is unacceptable... ohh wait, never mind.






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    Moderator Donkey's Avatar
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    This is directly from Subaru
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    Registered User xFalleNx's Avatar
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    Everyone likes a little shaft play!
    --Anthony 2011 DGM WRX stg2+sf intake WTFtuned ¯\_(ツ)_/¯

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    Moderator Donkey's Avatar
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    Quote Originally Posted by xFalleNx View Post
    Everyone likes a little shaft play!
    HEY-O!


    Resident Adviser @ WTF Tuning, LLC
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    Pro Manscaper Mikie13's Avatar
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    Quote Originally Posted by xFalleNx View Post
    Everyone likes a little shaft play!
    Well it is Steak and Beej Day for us men...
    The Hawk-Eye Alliance #90|The Blobeye Syndicate #0|The Stink-Eye Mob #0|N.E.R.D. Founding Member & #3
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    Quote Originally Posted by Donkey View Post
    This is directly from Subaru
    Thanks, you cant beat that as reliable information.

    As for the rest of you, it took all of my will-power to not put some pun in there. But since we're going downhill anyway...I try to get in as much shaft play as possible

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