ORIGINAL: tkg
On a 4c you need a new cam and the timing must be changed.
On a 2c pistion port just change the timing. Do it all the time, some engines even run backwards better than forward.
ORIGINAL: HornetFitter
It is never going to work . The transfer port timing (in a 2-stroke)/ valve timing (in a 4-stroke) is different when turning in reverse.
If you could redesign the engine it might be feasable, but the performance would be just plain poor.
If this is true why do my 2c glow engines run so crappy when they start backwards? Not trying to be smart, just would like to know.
RJ