G3612 and G3616 Engines Caterpillar

Illustration 1	g00472128
Engine design (A) Inlet valves (B) Gas admission valves (C) Exhaust valves

Number and arrangement of cylinders ... 50 degree Vee 16

Valves per cylinder

Inlet valves ... 2

Exhaust valves ... 2

Gas admission valve ... 1

Displacement ... 339.3 L (20,700 cu in)

Bore ... 300 mm (11.8 inch)

Stroke ... 300 mm (11.8 inch)

Compression ratio ... 9.2:1

Compression ratio ... 11:1

Combustion ... Spark Ignited

Firing order

Standard rotation CCW ... 1-2-5-6-3-4-9-10-15-16-11-12-13-14-7-8

Valve lash

Inlet valve ... 0.50 mm (0.020 inch)

Exhaust valve ... 1.27 mm (0.050 inch)

Gas admission valve ... 0.64 mm (0.025 inch)

When the crankshaft is viewed from the flywheel end the crankshaft rotates in the following direction. ... Counterclockwise

Note: The front end of the engine is opposite the flywheel end of the engine. The left and the right side of the engine are determined from the flywheel end. The number 1 cylinder is the right front cylinder.