Piston Roller Bearing play

Discussion in '2-Stroke Engines' started by jtmiyake, Sep 19, 2009.

  1. jtmiyake

    jtmiyake Member

    Curious if anyone knows how loose the roller bearing should fit into the crank connecting rod. I have the needle bearing type and it seemed to me to have excessive play. This engine is not that old so I'm just wondering if this is normal.
     

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  2. arceeguy

    arceeguy Active Member

    This is kind of tough to judge by feel, but the radial play should be barely perceptible. A visual inspection should reveal any wear like flat spots on the rollers or unevenly worn wear surfaces. (piston pin, con rod small end)
     
  3. Al.Fisherman

    Al.Fisherman Active Member

    I took a new engine apart (after break in) and there is more play in these bearings then you'd think. Kind of sloppy for me but the engine runs great.
     
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