Index	Rear Axle	Old ID Codes	New ID Codes	Engine Codes	Abbrevs	Links	Email

M series engines

The M series is a family of 6 cylinder engines with cast iron blocks.
Cylinder spacing is the same on all versions, so heads can be swapped between them.

Series	Type	Size	Bore x Stroke, Pitch	Years	Comments
M	I6	1988cc	75.0 x 75.0mm
M-C	I6	1988cc	75.0 x 75.0mm		Low compression
M-B	I6	1988cc	75.0 x 75.0mm		Dual SU carbs
M-BR	I6	1988cc	75.0 x 75.0mm		Dual SU carbs, low compression
M-D	I6	1988cc	75.0 x 75.0mm		Dual ordinary carbs
M-EU	I6	1988cc	75.0 x 75.0mm		EFI, Japanese pollution control
M-E	I6	1988cc	75.0 x 75.0mm		EFI
M-TEU	I6	1988cc	75.0 x 75.0mm		turbo, EFI, Japanese pollution control
2M	I6	2253cc	75.0 x 85.0mm
3M	I6	1988cc	75.0 x 75.0mm		Twincam version of M, used on 2000GT only
4M	I6	2563cc	80.0 x 85.0mm
4M-E	I6	2563cc	80.0 x 85.0mm		EFI
5M-E	I6	2759cc	83.0 x 85.0mm		EFI
5M-EU	I6	2759cc	83.0 x 85.0mm		EFI, Japanese pollution control
5M-GE	I6	2759cc	83.0 x 85.0mm		twincam, EFI
5M-GEU	I6	2759cc	83.0 x 85.0mm		twincam, EFI, Japanese pollution control
6M-GE	I6	2954cc	83.0 x 91.0mm		twincam, EFI
6M-GEU	I6	2954cc	83.0 x 91.0mm		twincam, EFI, Japanese pollution control
7M-GE	I6	2954cc	83.0 x 91.0mm		twincam, EFI
7M-GEU	I6	2954cc	83.0 x 91.0mm		twincam, EFI, Japanese pollution control
7M-GTE	I6	2954cc	83.0 x 91.0mm		twincam, turbo, EFI
7M-GTE	I6	2954cc	83.0 x 91.0mm		twincam, turbo, EFI, Japanese pollution control

Any M series engine can be swapped for another M series engine.
So a Mark II MX13 can have a 7M-GTE installed using the same engine mounts and gearbox (although the gearbox and diff might not be strong enough).

Last updated 27 Dec 2007