I have a question. Will a piston ported engine like a small Echo run with the same power in both directions? I know the ignition should be about 28* degrees before TDC at full throttle. Thanks Capt,n

I would think it would. The direction the piston/rod/crank is moving shouldn't matter if the timing is set right. Just my 2c

Yep.

AV8TOR

Most piston ports do equally well running backwards. It won't hurt anything so give it a go and see.
We do this a lot for twin engined models so the plane behaves better.

tkg: Is it hard to find props for a 24cc gas engine that could be run clockwise? Capt,n

The trick is to use a Pusher prop on a reverse rotation tractor engine.