Originally posted by Top Gun 777
I was talking about that, if piston goes below bottom line of exhaust port it will not hirt at all ( but should be certain number).
Exhaust timing will have nothing to do with that ( exhaust timing counting from top line of exhaust port).
Actualy underpiston induction ( when gap is open at piston in TDC position) is using widely in couple classes in airmodeling ( if they not prohibited). In cases where carb diameter is restricted-underpiston induction is very good solution. In our case it will not unfortunately work due the presents of idle.
THanks for clearing that up guys, i get it now hehehe
I also have another question regard exhuast port height. if you raise the exhaust port hieght on the sleeve, then you would have to raise it also on the crank case right? What happens when i replace the sleeve to a new one with the stock exhaust height. THat would meant that the exhuast port height on the crank case would be higher than that of the sleeve. Would that jeopardize the engine's longivity or reliabiliy or power? Would the sleeve start to warp or blow out at the top of the sleeve exhaust port because there's no reinforcement from the crank caes due to its exhaust port being higher than that of stock? Have i lost you guys yet?
