:?: Hello there.
I will get to the point, i am trying to build and engine of the glowplug type but trying to get some accurate information on port timings is near impossible. i understand the basic principles and i am using rotary valve/crank intake admission but all the information i have managed to get so far has been muddled at the best. my calcs give some very strange answers ( i.e, inlet and exhaust practically on the same line !! )
Engine : 12mm Bore , 12 mm Stroke
Admission timing ?? ( Crank inlet) so far 55 deg BTDC, and 55deg AFDC
Inlet : Height and area ??
Exhaust : height and Area ??
This might be the wrong forum to ask but the general web site was most helpful (nice pics ! ) any information would be good