Re: installed a new 6:1 head now a tapping noise
Roxo wrote
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One thing I did notice is there is a ridge on the top edge, on just one side of the walls on at least 2 piston cylinders (drivers side). Other side of the walls are smooth.
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If you can feel with your fingertip a little stage/level on the load side of the cylinder bore at top dead center, it means that the cylinder is badly worn. Then you can also see well that the honed tracks are polished off. This is called "bore polishing". That looks nice, but it is very bad. The cylinder track must not be mirror-smooth!
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