Engine Honda C30A

The 3.0-liter 24-valve Honda C30A engine was produced in Japan from 1990 to 2005 and was installed only on the Honda NSX sports model, including those produced under the Acura brand. There were two versions of this unit: for a manual transmission with 274 hp and for an automatic transmission with 256 hp.

The C-series engines: C27A, C30A, C32A, C35A.


Production years 1990-2005
Displacement, cc 2977
Fuel system distributed injection
Power output, hp 256 – 274
Torque output, Nm 284
Cylinder block aluminum V6
Block head aluminum 24v
Cylinder bore, mm 90
Piston stroke, mm 78
Compression ratio 10.2
Features VVIS
Hydraulic lifters no
Timing drive belt
Phase regulator VTEC
Turbocharging no
Recommended engine oil 5W-30
Engine oil capacity, liter 5.0
Fuel type petrol
Euro standards EURO 2/3
Fuel consumption, L/100 km (for Honda NSX 1995)
— city
— highway
— combined
Engine lifespan, km ~250 000
Weight, kg 195

The engine was installed on:

  • Acura NSX 1 (NA) in 1990 – 2005;
  • Honda NSX 1 (NA) in 1990 – 2005.

Disadvantages of the Honda C30A engine

  • The main problem of the engine is oil consumption, it can appear up to 100,000 km.
  • It is very important to monitor the lubrication level; even a slight decrease in it is dangerous.
  • Sometimes you can get away with just replacing the pushers, but often the camshaft is changed.
  • The timing belt is renewed every 90,000 miles, and if it breaks, it always bends the valves.
  • The weak points of the engine include a short-lived catalyst and ignition coils.

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