EJCP.PARTS

HONDA C SERIES 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 its then new Legend model, and its British sister car the Rover 800-series (and Sterling). The DOHC VTEC C30A is a 3.0 L version, producing 270 bhp (201.3 kW; 273.7 PS) and 210 lb·ft (285 N·m) of torque. The engine was the second Honda Engine ever to utilize Honda's proprietary VTEC variable-valve timing system in an automotive application, which adjusts cam lift and duration depending on engine RPM and throttle position. VTEC allows the C30A to produce a high maximum power level while maintaining a relatively flat torque curve. C30A was also equipped with Variable Volume Induction System (VVIS). VVIS used a primary and a secondary intake plenum. Secondary intake plenum engages at 4800 RPM to improve engines breathing ability and broadens torque curve.[1] The C30A also made use of titanium connecting rods, which was another first in a mass-production vehicle. The lightweight rods allowed a higher RPM to be achieved while maintaining the strength of traditional steel rods. The C30A block is an open-deck design made from an aluminum alloy with cylinders sleeved in ductile iron. The heads are four valve (twenty-four valves per engine total), dual-overhead cam (DOHC) design and contain the VTEC mechanism, which is actuated by oil pressure. For maximum performance, the C30A uses a direct ignition system, with individual coils positioned directly over each cylinder spark plug. Due to its DOHC layout and its lightweight rotating assembly, the C30A is capable of reliable high RPM operation. Factory redline is 8000 rpm and balanced/blueprinted versions of the engine can easily reach 9000 rpm with little to no reliability issues. Due to its complexity, cost and use of exotic materials, the C30A was used exclusively on Honda's NSX car. For NSX's equipped with a 4-speed automatic transmission, Honda used a slightly less powerful version of the C30A, which utilized less aggressive cam timing and produced 252 bhp (188 kW; 255 PS). An advanced version of this engine exists (though not in a production form) that campaigned briefly in the 2004 JGTC racing series (see Super GT) by the factory-supported Team Honda Racing group in highly modified GT-spec NSXs. This engine has various upgrades and modifications by Mugen and is the first turbo-charged Honda engine used in the series (prior to 2003, the GT-spec NSXs used a highly advanced, naturally aspirated variant of the C32B engine). Though the exact performance figures are kept secret, it is rumored to output more than 500 bhp.[WIKI]

SIZES BLOCK MATERIAL HEAD MATERIAL CAM TYPE FUEL SYSTEM
2.7
3.0
3.2
3.5
ALUMINUM ALUMINUM SOHC
DOHC
MPFI

ITEMS

BRACKETS EXHAUST MANIFOLD INTAKE MANIFOLD OIL PAN PISTON
SENSORS TIMING COVER TIMING SET VALVE COVER VALVE INFORMATION

LISTING TEMPLATES

SIZES COMPATABILITY ENGINE TEMP HEAD TEMP CRANK TEMP NOTES
2.7 SOHC 95-97 ACCORD C27A4A C-SERIES A ***** ***********
3.0 DOHC 91-96 NSX C30A1A 91-94 C-SERIES B
95-96 C-SERIES C
***** ***********
3.2 SOHC 91-92 LEGEND C32A1A C-SERIES D ***** ***********
3.2 SOHC 93-95 LEGEND C32A1B C-SERIES D ***** ***********
3.2 SOHC 93-95 LEGEND C32A6A C-SERIES D ***** ***********
3.2 SOHC 96-98 TL C32A6B C-SERIES E ***** COUPE AND SEDAN GS ONLY
3.5 SOHC 96-04 RL C35A1 C-SERIES F ***** ***********

VALVE INFORMATION
ACURA

MAKE MODEL YEAR RANGE
ACURA LEGEND 1991-1995
ACURA RL 1996-2004
ACURA TL 1996-1998
TYPE HEAD DIAMETER STEM DIAMETER O.A.L. GROOVES LOCATION
EXHAUST 28 5.5 117.7 1 *HON32AU
INTAKE 33.1 5.5 114.8 1 *HON32AU

VALVE INFORMATION
ACCORD

MAKE MODEL YEAR RANGE
HONDA ACCORD 1996-1997
TYPE HEAD DIAMETER STEM DIAMETER O.A.L. GROOVES LOCATION
EXHAUST 27.5 6.6 106.7 1 *HON27AU
INTAKE 33 6.6 104.4 1 *HON27AU

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