Jerry Hey wrote:

Here are Joy's measurements added to the Leman Drawing.   This is
enough information to bore the port.

  I don't know how to derive the opening and closing events in terms
of degrees before/after TDC.

Jerry

For those of you who are interested in PP note that the Leman's engine used a intake port 2 inches tall (inside dia.).  Be sure to use an apex seal that is adequately supported and to chamfer the inside edges of the port.

Ken Powell

 
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