Crankshaft - standard nitrided Cooper 'S', EN40B steel
Pistons - Omega 3 ring, +.060" supplied by Lynn Rogers Automotive.
These are beautifully engineered replacements. A factory-balanced set, they're fitted with 2 compression rings and 1 multi-piece oil-control ring. The 6.5 ml spherical-form dish has been machined eccentrically to increase the squish area. In conjunction with the 731 cam they should provide a healthy increase in output power - perhaps 85+ bhp.
Main bearings - standard
Big-end bearings - standard
Cam bearings - standard
Camshaft - 731 [pin drive]
Gearbox - standard 4 synchro Cooper 'S' close-ratio, with 3.44:1 final drive [18/62]
Click here for background information on the Australian Cooper 'S'.