when an engine changes to water cooling power can easily follow. octane limits how an engine is tuned, heat having a big effect. more power more heat add lean epa setups add more heat. water cooling an engine will allow more aggressive timing more compression which can build earlier cylinder pressure for more torque, harley is quietly developing systems to keep their big dinosaur engines, their lo compression and conservative power help but the upsizing will kill them, unfortunately air cooling will go the way of our simple carbs, whoever hides it best will have a better looking bike. i like simplicity, it will be easier to build a lighter air cooler street tracker, maybe we will get better suspension + brakes to bolt on our older models at a lower cost!!!
Last edited by rodhotter; 12-02-2012 at 12:12 PM.