byron corsair
 

I wish it was as simple as moveing the cowl forward but I assure you that was the first thought. I have learned that there is a differnce between what is now being sold as a 4.2 ie Fox and Brison and the old A&M or Precision Eagle 4.2. Crankshaft designs have chaneged and their in is the problems. Engines have gotten longer. My solution has been to send engine and purr power mount to a custom muffer builder and have the purr power modified slightly and my problem will be solved. It will then be custom fitted to the new Brison 4.2.

KEn