middle gudgeon pin to Crown 48 mm
Gudgeon Pin Diam. 19 mm
Piston Clearance 0.12mm or 45thou
for short conrod
Compression Ratio 7.25:1
65-1613 Conrod
with Piston Rings, Circlips and Gudgeon Pin
Gandini
BSA Piston NOS 250cc STD 63mm top of the gudgeon pin hole to the top edge of the piston 18.3 mm Gudgeon pin diameter: 5/8"-16 mm Compression hight: approx. 27 mm early BSA -1937 new, old stock
with Gudgeon Pin and Piston Rings Please view all pictures
BSA Big End Gold Star 350/500cc
Alloy cage.
350cc O.H.V Models:
1949-53: Gold Star, 1954-59: Gold Star
Con-Rod Casting Numbers: 65-1614 und 65-1836
500cc O.H.V Models:
1951-63: Gold Star
Con-Rod Casting Numbers: 65-1321
fits DBD34
Made in England
AJS / Matchless Piston Ring Set / Piston Rings STD
AJS Model 18
Matchless G80
500cc
STD = 82.55 mm
Oilring 1/8 thick x 1/8" wide
2 Top rings 1/16 thick x 1/8 wide
AJS / Matchless Piston Ring Set / Piston Rings +040
AJS Model 18
Matchless G80
500cc
STD = 82.55 mm +040
Oilring 1/8 thick x 1/8" wide
2 Top rings 1/16 thick x 1/8 wide
AJS / Matchless Piston Ring Set / Piston Rings +060
AJS Model 18
Matchless G80
500cc
STD = 82.55 mm +060
Oilring 1/8 thick x 1/8" wide
2 Top rings 1/16 thick x 1/8 wide