The cylinder head is a crucial engine component that seals the top of the cylinder block. It houses valves, spark plugs, and fuel injectors, ensuring proper combustion. Engine parts like pistons, camshafts, and gaskets work in tandem with the cylinder head for optimal performance.

Cylinder Head Specifications:

- Size: Varies by engine model (typically 300mm to 800mm in length)

- Material: Cast iron or aluminum alloy

- Grade: ASTM A48 (cast iron), SAE 356 (aluminum)

- Viscosity: N/A (solid component)

- Buoyancy: N/A (non-floating component)

Engine Parts (General):

- Size: Varies (pistons: 50mm to 150mm diameter, crankshafts: 500mm to 2000mm length)

- Material: Steel, aluminum, or forged alloys

- Grade: SAE 4140 (steel), SAE 6061 (aluminum)

- Viscosity: N/A (lubricants used: 5W-30, 10W-40, etc.)

- Buoyancy: N/A (designed for mechanical operation, not buoyancy)

Ship Engine Components:

- Size: Large (cylinder bores: 200mm to 1,000mm+)

- Material: High-strength cast iron, steel, or nickel alloys

- Grade: ASTM A536 (ductile iron), SAE 4340 (steel)

- Viscosity: Marine-grade lubricants (SAE 30 to SAE 50)

- Buoyancy: N/A (integrated into ship structure)