Is there somebody with a keen bean out there that can explain exactly why that is?
It's just a bigger cam, right?
Is it a problem with heat generation and dissipation? Oil pressure and circulation?
The intense friction of so many RPMs? A build up of tachyon particles from traveling at warp speed? What?
Somebody drop some science here like Galileo dropped the orange.
First of all, it's not a bigger cam. You have 2 cams: one exhaust, one Intake
. It's a "bigger" lobe on the cam.
Second: What are you asking? Why it hurts the engine? He wasn't saying that lift hurts your engine (although it will cause accelerated wear if you stay in lift for lengthy periods simply because the engine is turning faster. I mean, anything is more likely to break when it is at a higher rpm), he was saying that misshifting when trying to downshift into lift will destroy your engine. By going from 3k rpms in 6th to 10k rpms in second will bend up your valves and do who knows what else to the engine that is not built for that kind of speed.