Chris, I think that would be a great idea on a test bench but with the pipe being enclosed with minimal airflow I am afraid of buring through the coupler and spewing gunk all over the inside of my airplane. As you can see from the pic, it is tight.

Danny, I'm glad you shared that info with me. I'm not 100% sure what Rossi I have but I do know it has more stroke then the first one I had. If I can get just a little better then yours with the 11X9 and a 10mm carb I think it will get the one second per lap that I need.