Ariel SV 599 cc. JP Piston +020. 1931-1958. STD=86.38, +020= 86.8 mm1931-1932 550 cc SV. SB21, SB32, sB31 Sloper1932-1932 550 cc SV. VB, VB33 Vertical Engine1933-1935 550 cc SV. VA, VA41936-1958 600 cc SV. VBGudgeon Pin diameter 13/16“ = 20.5 mmMeasurements - please see last picture or techn. DataMade in Australiaincl. Piston Rings, Gudgeon Pin and CirclipsPiston Clearence 0.12mm or 45thou
Ariel SV 599 cc GPM Piston +040. STD=86.38. +040=87.4 mm1931-1932 550 cc SV. SB21, SB32, SB31 Sloper1932-1932 550 cc SV. VB, VB33 Vertical Engine1933-1935 550 cc SV. VA, VA41936-1958 600 cc SV. VBGudgeon Pin diameter 13/16“ = 20.5 mmMeasurements - please see last picture or techn. DataMade in Australiaincl. Piston Rings, Gudgeon Pin and CirclipsPiston Clearence 0.12mm or 45thou