The Mitsubishi Neptune or 4G4 engine is a series of iron-block OHV straight-4 engines built by Mitsubishi Motors from 1971 to 1979, alongside the Orion, Saturn, Astron and Sirius. This was to be Mitsubishi's last OHV engine. The inability to clear new emissions rules for 1978 meant that the Neptunes were replaced by the 4G1 Orion.
Displacement — 1378 cc
Bore — 76.5 mm
Stroke — 75.0 mm
Compression ratio — 9.0:1
Power — 64 kW (87 PS) @ 6,000 rpm
Torque — 115 Nm (85 lb·ft) @ 4,000 rpm
[edit] Applications
Displacement — 1187 cc
Bore — 71.0 mm
Stroke — 75.0 mm
Compression ratio — 9.0:1
Power — 51 kW (70 PS) SAE @ 6,000 rpm
Torque — 95 Nm (9.7 kgm) @ 4,000 rpm
[edit] Applications
[edit] See also
