Triumph TR6 T120 9 bout cilinder met zuigers.
Boring +20, twee koel ribben gelast, met twee +40 zuigers
schroefdraad kopbouten moet vernieuwd, helicoils.
Triumph TR6 T120 8 hole cylinder with pistons..
Bore is +20, two ribs are welded , with two +40 pistons.
Cylinder head bolt thread needs attention.