ORIGINAL: RC Extreme power
ORIGINAL: RickVB
Just for comparision, here is what I'm trying to replace. Note that I just measured it on my plane, and it's exactly 2.25".
[link=http://www.rcshowcase.com/images/accessories/mufflers/140spittsfv.jpg]RCS 140[/link]
Before you give up on the engine check a couple things, Check the pulse hole and make sure they are lined up good and there is a thin metal peace between the carb and engine, make sure it is not leaking air from there, Was told by a person today who knows engine inside and out that the engine is a good engine with some of the bugs worked out.
Milton