1970-1979 Ski-Doo Snowmobiles Service Manual, Page 95Get this manual
88 Table 3
CHAPTER FOUR
TWIN CYLINDER ENGINE SPECIFICATIONS (continued) Cylinder Bore (Standard)
Engine Type
Wear Limit 0.0092 in(0.235mm) 0.0076 in(0.195mm) 0.008in(0.20mm) 0.0084 in(0.215mm) 0.0076 in(0.195mm) 0.0076 in(0.195mm) O.OlOin(0.255mm) 0.0086 in(0.216mm) 0.0069 in(0.175mm) 0.007 in(0.18mm) 0.007 in(0.18mm) 0.009 in(0.22mm) 0.006 in(0.16mm)
Ring End Gap 0.006-0.014 in(0.15-0.35mm) 0.006-0.014 in(0.15-0.35mm) 0.006-0.014 in(0.15-0.35mm) 0.010-0.063 in(0.25-1.60mm) 0.010-0.063 in(0.25-1.60mm) 0.010-0.063 in(0.25-1.60mm) 0.010-0.063 in(0.25-1.60mm) 0.010-0.063 in(0.25-1.60mm) 0.008-0.016 in(0.20-0.40mm) 0.008-0.016 in(0.20-0.40mm) 0.008-0.016 in(0.20-0.40mm) 0.008-0.016 in(0.20-0.40mm) 0.008,0.016 in(0.20-0.40mm)