Not Ranked
The most important parameter in idle quality is how much overlap the cam has. The more overlap a cam has (everything else being equal) the rougher the engine will idle. Overlap is determined by a large part by the lobe center angle of the cam shaft. Two cams with identical cam lobes but on different lobe centers will run very differently. Tighter lobe centers (like 105 degrees) will have more overlap than a wider lobe centers (like 114 degrees).
|