|
@ FastDB2s: do you remember the exhaust port diameter and the step size, please?
@ dikko: I dont think you can expect 10 hp more from a FF engine though, but almost all the small displacement engines I saw (4 cylinder bikes 600 cc and 1000 cc) had this step between the exhaust port and the manifold (sometimes in the head itself). Any attempt to remove the said step gave very bad results in terms of power and torque, as confirmed by Gungebucket.
May be it does not sound "logical" but the power sheets dont lie.
|