[QUOTE="WavyDavy"] I use a minimum of 50% rpm on a bike most of the time 'cos that's what they're made for. Rev limiters are your friend. [/QUOTE] But not if you happen to be an FZR250RR eh? ;) [QUOTE] They prevent unwanted damage in both bike and car engines so should always be sought out on each journey. IMHO. [/QUOTE] Heh.. my Bandit has an excellent rev limiter, I sometimes use it for clearing cossings of peds quickly. [QUOTE] The biggest anti-rev problem is deisel cars getting good in the last few years - even my Alfa doesn't like going over 4500rpm. But given that the redline is 5000rpm, I'm sticking to my own mantra quite well... :) [/QUOTE] I used to rev the company Fiesta diesel until it wouldn't rev any more in most gears, mainly coz I didn't like the van or the boss. Also, starting it and warming it up by putting your foot flat on the floor was good. [QUOTE] I'd expect to do more damage to an engine by not revving it than by revving highly it within the tolerances it is built to withstand [/QUOTE] To a point I'd think... it's a ballance between knocking the bottom end out of an engine, and wearing out the top end quickly.