Home Forums TaG Rotax Max Rotax Evo Update Micro Max Reply To: Rotax Evo Update Micro Max

#40418

Christian Fox
Participant

Mark, that’s the big question. According to Rotax, the upgrade will make them equal. Internally, the piston is slightly lighter, the con rod has a new coating, and the crank bearing is slightly different. A couple of engine builders I’ve spoken too think a good, upgraded Micro will still be good relative to an Evo. I suspect a high $$, part-matched Micro franken-motor that kicks ass now will still kick ass when upgraded. The big question is the coil; you don’t get the new one in the Micro upgrade. The timing hasn’t changed, so it’s not a required upgrade, but Rotax claims the throttle response will be better.