Originally Posted by
BJ64
Is there anything particular you have to do if mounting the engine upside down?
BJ
1. Rotate the engine (and mount) so that the exhaust valve is at the lowest point of the engine. This will allow fuel to drain out of the exhaust valve when it is open instead of pooling in the cylinder head and flooding the engine.
2. Mount the fuel tank so that the centerline of the tank is about even with the needle valve. This will reduce the head pressure on the fuel and help prevent flooding of the engine.
3. If the above does not prevent flooding, invert the plane, putting the cylinder up, while starting. I suggest not trying to taxi or take off from this inverted position, unless you have a good helper and your plane is capable of almost vertical takeoff.
Good luck.
Sincerely, Richard
AMA 861960
Club Saito #635; Saito 56, 100, 120abc, 130T, 180
YS F 120;