JVS, as an aside have you had a look at Matchless London.
Their engine looks like an S&S complete with M inserts in the rocker covers.
ENGINE TYPE
Matchless Design on S & S mechanics. Twin cylinder V 56,25°
BORE X STROKE
mm 104 x mm 111
CAPACITY
1916 cc
COMPRESSION RATIO
9.75:1
INTAKE
Fuel Injection
TRANSMISSION
Separate gear box – 6 speed. Primary drive: chain. Final drive: chain
