Hi Paul, many thanks for the info. Actually, I popped an email over to ME yesterday. My friend was hoping for something this weekend. Anyhow, the Big Bang engine came from moto gp engines back in the day whereby the engine fires all 4 cylinders in quick succession or at the same time as opposed to in regular formation. Gives best of high torq and high power I.e. big 2 cylinder 4 stroke for torq and in-line 4 cylinder for power. Makes the engine vibrate which is a bit word at first... anyhow, the r1 engines iTB’s are being used for this installation.
Cheers
Craig