<< > Ask Paul Yaw about the correct length to the collector. He is developing
a
 > street header for 13Bs on his dynomometer. Lynn E Hanover.

 Paul Yaw is concerned mostly with stock RPM ranges (up to 8000) RPM. Since
we
 are limited to 6000 to 6500 RPM the optimum tuning will be different.
Paul Lamar

Maybe so, but since he has built some airplane engines, he may know exactly
what is needed.  Lynn E. Hanover
  >>

 
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