Aga

hi guys. i was watching a video from pineapple racing where the guy was cleaning a rotor with a wire brush and i remembered a friend of mine, who was polishing piston crowns claiming that it kept them "muck free" from carbon deposits, and thus making it less prone to knocking. i was wondering, do rotors need to have a textured surface, or polishing them might be a good idea... (if it does any good, i bet it wont be noticable, but , just an idea...)

diabolical1

iTrader: (3)

the theory is good. i've known a handful of guys that have done it over the years. i've tried it with a few engines since 2006 or so, but i've had no reason to tear any of them down again, so i can't say how they fared in terms of carbon. i can't say i've seen anyone else report on it after the fact either. if you have the engine apart and have the opportunity (time and means), then i'd say give it a try. if not, i wouldn't lose sleep over it. just make sure the rotors are as clean as you can make them (moreso in the seal slots) before assembly.

dgeesaman

iTrader: (7)

It could help with problems like preignition, but plain old knock will happen if the conditions are right.

For turbocharged rotaries where knock is truly critical, water injection is a seriously effective anti-knock and anti-carbon method.

Aga

thanks for the input guys... yeah ideally i'm gonna run water meth on mine , especially cause fuel is so expensive over here than noone even buys 100 octane anymore (its around 1.8 euros per litre, with 95 oct following around 1.65euro/lt)

dgeesaman

iTrader: (7)

If you run water/meth injection, the rotors will stay very clean.

David