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Turbo fin's

Discussion in 'A3/S3 Forum (8L Chassis)' started by temp, Dec 9, 2013.

  1. temp
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    temp Member

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    [Dec 9, 2013]
    My turbo fin's move only a little in and out with NO play up and down is this play in the turbo acceptable or is it knackered.
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  3. g60leigh
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    g60leigh Well-Known Member

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    [Dec 12, 2013]
    I understand that a little side to side movement is fine. Slack is taken up when the oil flows past the bearings.
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  4. desertstorm
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    desertstorm Well-Known Member

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    [Dec 12, 2013]
    It all depends what kind of bearings are in the turbo. Most have sleeve bearings which use the hydrodynamic properties of oil to produce a bearing surface.These will have a certain amount of play side to side but the turbine or compressor shoudn't be able to touch the housing any where. There should be very little axial movement ( in and out) on the shaft.Some turbo's use bearings with ceramic ball or roller elements, these should have no appreciable movement in either direction.Karl.
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  5. s3dave
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    s3dave TFSI Hybrid

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    [Dec 12, 2013]
    As said journal bearings have a small bit of play up down, no in out play should be really there..
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