Originally Posted by kbozarth
Put a smaller prop on it, or cut a 9x6 down to 8" and run it rich but at high rpms (16,500) on the bench for a few tanks. Pinch the fuel lines every once in a while to get a feel for how far you are off from peak. Then put an APC 9x6 on in and set it with a decent smoke trail. Do some climb/dives (giant egg shaped loops) to let the motor unload numerous times during the first few flights. Don't run it slobbering rich like they used to with ringed engines.
Good stuff. Any certain type glow plugs or is stock fine ?