Originally Posted by moorespeed
more compression in a race engine only gives extra power up to a point, after that the engine just starts to get harsh. and as for twin plugs, i have never seen any gains, so i stick with single plug even on my bored and stroked engines.
Are you Moorespeed as in http://www.moorespeed.co.uk/
Can you tell us about your racebike?
Is it time for me to bin my 336 cam and move on?