Polaris 2001 High-Performance Snowmobile Service Manual (PN 9916690), Page 61Get this manual
Bore6.5 cm
Stroke6.0 cm
IHV17.1 cc
DisplacementBore Stroke Displacement199.098 cc R=
IHVDisplacement IHV
Full Stroke Compression Ratio
To calculate the Effective Compression Ratio, substitute the exhaust port height for the stroke in the formulas above:
Exhaust2.95 cm