Not talking about the transferr ports but the reed intake port. If the reed was vertical or in a box then no problem but the Ryobi reed is flat on the back plastic plate.
ORIGINAL: Lureman
Hi guys I'm not an expert but as the piston goes up in the cylinder. the reed opens and lets the gas charge into the crankcase then as the piston comes down it closes the reed and it forces the charge from the crankcase threw the intake port and into the cylinder above the piston which then the piston comes back up and fires. So in my opinion just put a cdi on the engine and change timing and you should be fine. I dont think the placement of the reed in anyway makes a difference. to change the coil and move it would be hard to do so just use a cdi. TKG I dont think it matters because there are 2 intake ports on a ryobi. I have a ryobi in my paws as I'm writing this and the 2 intake ports are on the side and the exhaust port is in the rear. I'm not sure but if it had 1 intake port then I think your theory would be true but in this case there is one on both sides. The standard plastic back cover has a slant inside to give room for the piston to come down so this back cover cannot be changed around on the back, would need to make a new one.