Astron II Differences

A pictorial of the differences between the original and revised Astron II.

Combustion Chambers
Original Astron II combustion chamber	Second Generation Astron II combustion chambers
Pistons
Original Astron II pistons	Second Generation Astron II pistons
Rocker Assemblies
Second Generation Astron II rocker assembly
Balance-Shaft Adjustment
Lower counter-balance shaft chain guide on early Astron II engines	Counter-balance shaft chain tensioner fitted to late Astron II engines (from late 1990)