was doing some surfing on the net and read on the skunk2 site that oversized valves should not be used w/ their stage 2 or higher cams. was trying to think of a logical reason for this...but obviously can't....can someone explain why?

 

The combination of greater lift of both valves combined with the larger valve diameter could cause the the intake to hit the corresponding exhaust valve in the overlap cycle. Never seen it happen but I guess it is possible in an extreme case.

 

i'd tell you why but then i'd get in a flame war i'm sure.... post your e-mail addy and i'll tell ya.