Honda C engine

Honda C engine
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.