Just got my kit...should I be concerned with this gap (pic)

Discussion in 'Motorized Bicycle General Discussion' started by jleadbetter, Aug 6, 2010.

  1. Allen_Wrench

    Allen_Wrench Resident Mad Scientist

    Feb 6, 2010
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    A good way to get uniform pressure: first make sure your glass surface is both DEAD FLAT and also DEAD LEVEL if you can. Then put a plug part way into the head, and put a five pound dumbbell weight over the plug. Then don't press down at all. Just move the head around on the sandpaper very carefully as described above, not by pushing on the weight or the plug - just handling the sides of the head. I believe it should provide a uniform pressure evenly across the mating surface and you won't even make your wrists sore. (I have bad wrists, that's why I come up with stuff like this.)
  2. ex-28

    ex-28 New Member

    May 23, 2010
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    great info on this and thanks all , my nephew just got an engine , same spot as in the picture , head bots are tight but still a gap , has verry low compression at all in the engine i'm going to help him fix it up appreciate it !

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