RE: OPS Engine help needed badly.
I have a OPS Maxi TWIN that I've run on my scratch built 25% Stearman. It's a jewel! I converted it to gasoline and put a CH ignition on it running the little rim fire plugs and fully shielded ignition wires. Turns a 22X10 prop and I run a walbro carb on it that I use on the stock intake reed assembly. I use a scratch built muffler