complete
+60 = 80.5 mm
compr. ratio 9.4:1
Made by GPM
Middle gudgeon pin to lowest point of piston: 29 mm
Middle gudgeon pin to highest point of piston: 41,5 mm
Gudgeon pin diam. 19 mm
can be used f. Norton
Piston Clearance 0.12mm or 45thou
with piston rings, circlips and gudgeon pin
1946-1953
Hep 11341+40
+040 = 86 mm
65-1262
Compr. ration 6.8:1
to be used with flywheels
65-1235 und 65-1235
to be used with conrod 66-482
Piston Clearence 0.12mm or 45thou
Gudgeon Pin: 19mm
Compression Height: 31.1mm
for long conrod B33 M33 B34 Gold Star
distance between 2 ends of piston ring must be 0,5 mm