Shoichiro Irimajiri F1 Engine Designer Profile & Career Stats

Formula 1 Engine Designer

Shoichiro Irimajiri

46th in all-time engine designer ranking

1
Grand Prix WinGP Win
2
Podiums
12
Grands Prix

Shoichiro Irimajiri is credited with 1 Formula 1 engine from Honda between 1966 and 1967. That engine won 1 Grand Prix. Shoichiro Irimajiri ranks 46th of 78 in the all-time F1 engine designer ranking.

Designer Profile

Country Japan
Date of BirthJan 3rd 1940 (age 86)
RoleEngine designer 1 engine
F1 Engines1 (1966-1967)
Engine brandHonda
Teams powered1
Ranking46th of 78 all-time engine designers

Wins per Team

Honda 1966-1967 · 1 engine · 1 win

Career Timeline

Honda 1966-1967

Key Career Landmarks

EngineHonda RA273E 1966Honda RA273E 1967
Race1966 Italian F1 Grand Prix1966 ITA F1 GP 26 years, 244 days26y, 244d1967 Mexican F1 Grand Prix1967 MEX F1 GP 27 years, 292 days27y, 292d
Win1967 Italian F1 Grand Prix1967 ITA F1 GP 27 years, 250 days27y, 250donce so far
Podium1967 South African F1 Grand Prix1967 RSA F1 GP 26 years, 364 days26y, 364d1967 Italian F1 Grand Prix1967 ITA F1 GP 27 years, 250 days27y, 250d

F1 engines designed by Shoichiro Irimajiri

Newest first · click a column to sort · titles as drivers’ / constructors’

EngineYearsGPWinsPolesPodiumsPTSTitlesHPRPM
Honda RA273E 3.0 V12
Honda
1966-196712102230 / 04309,700
Stats current as of:

Engine Designers Ranked Nearby

  1. 44Yosuke Sekino1 win
  2. 45Nobuhiko Kawamoto1 win
  3. 46Shoichiro Irimajiri1 win
  4. 47Tadashi Kume1 win
  5. 48Luca Marmorini0 wins

Full ranking of all 78 F1 engine designers →

Shoichiro Irimajiri: Frequently Asked Questions

How many F1 World Championships have engines designed by Shoichiro Irimajiri won?
No engine designed by Shoichiro Irimajiri has won a Formula 1 World Championship.
Is Shoichiro Irimajiri the most successful F1 engine designer of all time?
Shoichiro Irimajiri ranks 46th on F1-Fansite.com's list of the most successful Formula 1 engine designers of all time, with 1 Grand Prix wins.
Is Shoichiro Irimajiri still designing F1 engines in 2026?
No. The last Formula 1 engine credited to Shoichiro Irimajiri is the Honda RA273E, last raced in 1967.
How old is Shoichiro Irimajiri?
Shoichiro Irimajiri, the Formula 1 engine designer from Japan, was born on 3 January 1940 and is 86 years old.