JAA

Engineering / Engines

3M

Toyota · Inline-6

01 — Engine detail

Enginedetail.

Engine code
3M
Manufacturer
Toyota
Configuration
Inline-6
Displacement
1,988 cc
Valvetrain
DOHC, 2 valves per cylinder
Aspiration
Naturally aspirated
Production
1966 – 1971
Applications
Toyota 2000GT (MF10)
  1. 01

    The 3M used a Yamaha-designed aluminium hemispherical cylinder head on the M-series block, with three Mikuni-Solex carburettors.

    Source: Toyota M engine — Wikipedia (English)
  2. 02

    It produced 150 PS at 6,600 rpm.

    Source: Toyota M engine — Wikipedia (English)

Technology — The straight-six

Six cylinders in a single row give inherent primary and secondary balance — the smooth heart of many Japanese GTs, from the 1960s to the turbo era.

Technology page →

02 — Applications in the archive

03 — Sources

  1. 01Toyota M engine – WikipediaWikipedia · reference · accessed 2026-09-26