Engine Vocabulary

Cast as part of the crankshaft to help prevent vibration. They offset the weight of the pistons and connecting rod assemblies

• Oil Rings

• Harmonic Balancer

• Counter weights

• Flywheel

Prevents combustion pressure from blowing by and entering the crankcase

• Valves

• Compression Rings

• Oil Rings

• Oil Galleries

Allow the crankshaft to turn within the connecting rod on a film of oil.

• Rod bearing inserts

• Water Jackets

• Oil Galleries

• Valves

Connects a piston to a crankshaft

• Connecting Rod

• Piston Ring

• Main Bearings

• Wrist Pin

Round machined areas of the crankshaft where it is connected to the connecting rods. these areas are finely polished

• Counter Weights

• Journals

• Main Bearings

• Rocker arm

Bolts to the top of the block covering the tops of the cylinders.

• Connecting Rod

• Top End

• Flywheel

• Cylinder Head

Scrape the excess oil from the cylinder walls for return to the crankcase

• Oil Galleries

• Oil Rings

• Compression Rings

• Oil Scrapers

Passages for coolant circulation

• Oil Galleries

• Water Ports

• Water Jackets

• Coolant Crevices

Heavy wheel containing a rubber vibration dampener

• Flywheel

• Counter Weights

• Harmonic Balancer

• Wrist Pin

Small pockets above the pistons where air-fuel mixture ignites.

• Cylinder Head

• Combustion Chamber

• Compression Chamber

• Combustion Stroke