Mitsubishi 4M4 engine


The Mitsubishi 4M4 engine is a range of four-cylinder diesel piston engines from Mitsubishi Motors, first introduced in the second generation of their Montero/Pajero/Shogun SUVs. They superseded the previous 4D5 engine family, main differences are enlarged displacements and the utilization of one or two over-head camshafts. Originally available only as a 2835 cc intercooled turbo, detail improvements in 1996 and a larger 3.2 litre option in 1999 served to improve power, torque, fuel economy and emissions. The final version has 3.0 litres swept volume and Common rail direct injection.

4M40

Inline 4-cylinder SOHC, bore x stroke =,, swirl combustion chamber

Naturally aspirated

Compression ratio 21.0:1, Zexel Distributor type injection pump, at 4000 rpm, at 2000 rpm
Applications:
Compression ratio 21.0:1, at 4000 rpm, at 2000 rpm
Applications:
Compression ratio 21.0:1, Zexel Electronically controlled or Mechanical controlled distributor type Injection Pump, at 4000 rpm, at 2000 rpm
Applications:
Inline 4-cylinder DOHC 16 valve, Bore x Stroke,

Intercooled turbo

Compression ratio 17.0:1, Zexel Electronic control type distributor type pump or Denso Common Rail direct injection, at 4000 rpm, at 2000-3000 rpm
Applications:
Compression ratio 17.0:1 or 16.0:1, Denso Common Rail Direct Injection
Applications:
Inline 4-cylinder DOHC 16 valve, Bore x Stroke,, direct injection
OAT, Applications:
CR, Applications: