Honda C engine

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Honda C engine
Overview
Manufacturer	Honda
Production	1985–2005
Layout
Configuration	90° V6
Displacement	2.0 L (1,996 cc) 2.5 L (2,494 cc) 2.7 L (2,675 cc) 3.0 L (2,977 cc) 3.2 L (3,179 cc) 3.5 L (3,473 cc)
Cylinder bore	82 mm (3.23 in) 84 mm (3.31 in) 87 mm (3.43 in) 90 mm (3.54 in) 93 mm (3.66 in)
Piston stroke	63 mm (2.48 in) 75 mm (2.95 in) 78 mm (3.07 in) 91 mm (3.58 in)
Cylinder block material	Aluminum
Cylinder head material	Aluminum
Valvetrain	SOHC & DOHC 4 valves x cyl. (VTEC only in DOHC engines)
Compression ratio	9.0:1, 9.6:1, 10.2:1
Combustion
Turbocharger	Variable geometry (some versions)
Fuel system	Fuel injection
Management	Electronic Control Unit
Fuel type	Gasoline
Cooling system	Water-cooled
Output
Power output	From 145–294 PS (107–216 kW; 143–290 bhp)
Torque output	From 167–314 N⋅m; 123–231 lbf⋅ft (17–32 kg⋅m)
Chronology
Successor	Honda J engine

Honda's first production V6 was the C series; it was produced in displacements from 2.0 to 3.5 liters. The C engine was produced in various forms for over 20 years (1985–2005), having first been used in the KA series Legend model, and its British sister car the Rover 800-series (and Sterling).

All C engines share in common a 90-degree V-angle from bank to bank, common cylinder block bore centers, and four valves per cylinder. It is an all-aluminum design, and uses timing belt-driven single or dual overhead camshafts; the water pump is also driven by the timing belt.

All C engines use an interference design; if the timing belt fails, any open valves will clash into the pistons, and severe engine damage will occur.

The engine family can be broken down into three sub families:

• C20A, C20AT, C25A and C27A (transversely mounted)
• C30A and C32B (transversely mounted rear)
• C32A, C35A, and C35B (one-off) (longitudinally mounted)

As a general rule, interchange of parts will not work between these sub groups.