ORIGINAL: Bill Vargas
Other than that, there's really not much one can do to a one stock engine class of Racing. Don t try to drill out the muffler exhaust port, port match the exhaust and intakes, enlarge the carb or change the angle of ports to include the crank port, shave out the exhaust rib(that will really make the tt pro 40 zing) or run without the baffle,,,
BV
One would have to wonder how many of these "noticeable" things get done since you can't actually see the exhaust rib without taking off the muffler or the crank ports without taking off the carb, etc. etc. How often does the winning engine actually get torn down? Not very often I imagine. Racing is racing and there is always a temptation to push the rules or read between the lines. (Yeah, right, like NASCAR was originally supposed to be STOCK cars...) A good race CD needs to be savvy about engine modifications. This is one advantage of an "unlimited" class like 428. There CAN'T be any engine "cheating" because anything goes. The fast guys, who are also usually the best pilots and have the best-prepared airplanes, know all the tricks and how to get away with them if they wanted to. It's really up to the personal integrity of the individual. Fortunately the vast majority of racers have a high degree of personal integrity and would not cheat at racing "toy" airplanes. I've been accused of cheating before ( I didn't). But it's STILL nice to know what the "tricks" are anyway.