This is a Factory periphery port housing sitting on top of a late
style
        housing with the "J" port (big bridge port that includes part of the
rotor housing
        into the port) showing how the bridge ported engine has later intake
closing
        than the periphery ported engine. Note that the "J" port extends
farther to the
       right in this picture. The later closing leads to poorer low speed and
idle
       performance. ( but great high speed performance).
       Lynn E. Hanover

I assume you are using one piece apex seals with these bridge port engines Lynn.

Paul Lamar
 
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