i cant remember the exact number but after 2 months of owning my alfa the cambelt went, after rebuilding it we plugged into examiner to find the rev limiter had been reached over 110 times!! now THAT is how to appreciate the engine... thats almost twice a day, every day, for the two months of ownership
just a side note - most VVC enabled engines LOVE to rev, my MG is still making power at 7500rpm, shame the internals are only rated to 8k!