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Honda C30A Engine

 

C-Series are a range of V6 engines produced between 1985-2005 by Honda. However C30A engine, which was first engine that was used in Honda's supercar NSX, is only related to C32B engine. C30A and C32B have nothing in common with the rest of C-Series besides their engine configuration .

 

 

Basicly C30A was an all aluminum 90° V6 engine with ductile iron sleeved cylinders. Displacement was 2977cc with 90mm bore and 78mm stroke. The compression ratio was 10.2:1. Belt driven heads had Dual Over Head Cams and 4 valves per cylinder. This general details might sound like an ordinary engine, however C30A engine was full of technical refinments and innovations.

 

Honda C30A Engine

 

C30A was the second engine to recieve VTEC after B16A. Along with VTEC, 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. C30A had direct ignition system, with individual coils positioned directly over each cylinder spark plug. This system ensured complete combustion under high loads and high engine speeds. C30A was usign titanium connecting rods which was first in a mass-production vehicle. Lightweight yet strong titanium rods added an other 700 RPM to engines usable range.

 

 

Each C30A was handbuilt at Tochigi plant. The standart output of the engine was 270hp while the engines fitted with a automatic transmission were delivering 252hp with slightly altered camshafts. Both versions had a redline of 8000 RPM. C30A was used in every NSX between 1991 - 1996. After 1996 only NSX's with 4-Speed Automatic Transmission recieved C30A. In 1997 Manual transmission NSX's started to use C32B instead of C30A.

 

Model

C30A

Displacement (cc)

2977

Power Output (hp)

270

Compression Ratio

10.2:1

Bore (mm)

90.0

Stroke (mm)

 78.0

VTEC

YES

Years Produced

1991 - 2005


 

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