1981 Ski-Doo Shop Manual Supplement, Page 8Get this manual
SECTION 02 SUB-SECTION 03-01, (ENGINE TOLERANCE MEASUREM ENTS)
TOLERANCE AND WEAR LIMIT1981 ENGINES
ENGINE TYPE CYLINDER BORE (NOMINAL) OVERSIZE STD PISTON TO WALL CLEARANCE MAXMINMAXIMUM RING END CAP CRANKSHAFT END PLAY MIN MAX
69.50 mm (27362") 72.00 mm (2.8346") 59 .50 mm (2.3425") 62.00 mm (2.4409") 67.50 mm (2.6575") 69.50 mm (2.7362") 72.00 mm (2.8346") 76 .00 mm (2 .9921 ")
N.A 72 .25 mm (28445") 59.75 mm (2.3524") 62 .25 mm (2.4508") 67.75 mm (2.6673") 69 .75 mm (2.7461") 72.25 mm (2.8445") 76.50 mm (3.0118")
0.065-0.200 mm0026- .008"0.070-0.200 mm (.003-.008"0.080-0.180 mm