RE: Removing engine from a Cox Racer
Andy,
Often the glow plug gasket looks like it is part of the cylinder. You can only tell by the copper color on the seating surface. If it is in fact missing, that could be your entire problem. You get a new gasket with a spare glow plug. If the Cox gasket is not available, the Norvel will fit.
As I mentioned before, I do not have that plane. Generically, if you remove the screws that hold the upper and lower part of the fuselage together, the engine will often be held by some slots molded into the fuselage and can be slid out of the fuselage halves.
Old planes used a tank mounted engine and often had the engine screwed to a plastic firewall on the plane.
Hope this helps some.
George