Originally Posted by
Fiesta_Jed
On the mlr there are engines reving to 26M/S at peak rpm, the builders of these engines say it is fine at these piston speeds.
A vtec B18 engine at 11,000rpm which is what some nutters rev them to, will see piston speeds of 32 M/S !
Would this noticeably increase engine wear?
Very interesting thread
Higher piston speeds will mean higher wear rates typically if everything else is equal, but things like piston design can make a big difference in ring life, a deep skirt that allows a piston to tip less for example can improve ring life.
Rod ratio effects it too, as it changes the PEAK piston speed, where as we are talking here about average piston speed which rod length has no bearing on.
Internal engine geometry is a very complex subject with so many factors interacting together that looking at just one in isolation is rarely valuable.