Mechanical Specifications

GENERAL SPECIFICATIONS

Block
Balance Shaft Bearing Bore Diameter Carrier 42.000-42.016 mm (1.6535 -1.6542 in)
Balance Shaft Bushing Bore Diameter 40.763-40.776 mm (1.6048-1.6054 in)
Crankshaft Main Bearing Bore Diameter 64.068-64.082 mm (2.5224-2.5229 in)
Cylinder Bore Diameter 85.992-86.008 mm (3.3855-3.3861 in)
Cylinder Bore Out of Round Maximum 0.010 mm (0.0004 in)
Cylinder Bore Taper Maximum 0.010 mm (0.0004 in
Cylinder Head Deck Surface Flatness Transverse 0.030 mm (0.0012 in)
Cylinder Head Deck Surface Flatness Longitude 0.050 mm (0.002 in)
Cylinder Head Deck Surface Flatness Overall 0.08 mm (0.0031 in)
Cylinder Head Surface Flatness Block Deck Transverse 0.030 mm (0.0012 in)
Surface Flatness Block Deck Longitude 0.050 mm (0.002 in)
Surface Flatness Block Deck Overall 0.1 mm (0.004 in)
Valve Guide Bore Exhaust 6.000 6.012 mm (0.2362 0.2367)

Camshaft
Camshaft End Play 0.040 0.144 mm (0.0016 0.0057 in)
Camshaft Journal Diameter 26.935 26.960 mm (1.0604 1.0614 in)
Camshaft Thrust Surface 21.000 21.052 mm (0.8268 0.8252 in)

Connecting Rod
Connecting Rod Bearing Clearance 0.029 0.069 mm (0.0011 0.0027 in)
Connecting Rod Bore Diameter Bearing End 52.118 52.134 mm (2.0519 2.05252 in)
Connecting Rod Bore Diameter Pin End 20.007 20.021 mm (0.7877 0.7882 in)
Connecting Rod Side Clearance 0.070 0.370 mm (0.0028 0.0146 in)
Connecting Rod Straightness Bend Maximum 0.021 mm (0.0083 in)
Connecting Rod Straightness Twist Maximum 0.04 mm (0.0157 in)

Crankshaft
Connecting Rod Journal Diameter 49.000 49.014 mm (1.9291 1.9297 in)
Crankshaft End Play 0.050 0.380 mm (0.0012 0.0150 in)
Crankshaft Main Bearing Clearance 0.031 0.067 mm (0.0012 0.0026 in)
Crankshaft Main Journal Diameter 55.994 56.008 mm (2.2045 2.2050 in)

Piston Rings
Piston Ring End Gap First Compression Ring 0.20 0.40 mm (0.008 0.016 in)
Piston Ring End Gap Second Compression Ring 0.35 0.55 mm (0.014 0.022 in)
Piston Ring End Gap Oil Control Ring Rails 0.25 0.76 mm (0.010 0.030 in)
Piston Ring to Groove Clearance First Compression Ring 0.04 0.08 mm (0.0015 0.0031 in)
Piston Ring to Groove Clearance Second Compression Ring 0.030 0.069 mm (0.0012 0.0027 in)
Piston Ring to Groove Clearance Oil Control Ring 0.090 0.106 mm (0.0035 0.0042 in)
Piston Ring Thickness First Compression Ring 1.170 1.190 mm (0.0461 0.0469 in)
Piston Ring Thickness Second Compression Ring 1.471 1.490 mm (0.0579 0.0587 in)
Piston Ring Thickness Oil Control Ring Rail Maximum 0.43 mm (0.0169 in)
Piston Ring Thickness Oil Control Ring Spacer 1.574 1.651 mm (0.0620 0.0650 in)
Pistons and Pins " Piston Piston Diameter 14.5 mm up 85.967 85.982 mm (3.3845 3.3851 in)

Piston
Piston Pin Bore Diameter 20.002 20.007 mm (0.07875 0.7877 in)
Piston Piston Ring Grove Width Top 1.23 1.25 mm (0.0484 0.0492 in)
Piston Piston Ring Grove Width Second 1.52 1.54 mm (0.0598 0.0606 in)
Piston Piston Ring Grove Width Oil Control 2.52 2.54 mm (0.0992 0.1000 in)
Piston To Bore Clearance 0.010 0.041 mm (0.0004 0.0016 in)
Piston Pin Clearance to Connecting Rod Bore 0.007 0.026 mm (0.0003 0.0010 in)