Logic would seem to dictate that the piston is traveling at the same speed at both TDC and BDC which are the 2 apexes when the crankshaft reaches the end of it's stroke and the highest speeds would be at midstroke, either power or exhaust but some resistance would be realized on the compression stroke which would be overcome by the power stroke on the opposite firing piston. If the piston goes slower how long before it gets behind?


'45 Ford PU
66 Valiant wagon, leaning tower of power.
79 Chevy C10 w/250
02 PT Cruiser Convertable