EA82 Turbo
Type: 1781cc EFI OHC boxer 4-cyl Turbo
Power: 89.5kW @ 5200
Torque: 178Nm @ 2400
Sources: 88-89 Alcyone/Vortex and Leone GT

 EJ20
Type: 1994cc EFI DOHC 16-valve 4-cyl boxer
Power: 112kW @ 6800
Torque: 172Nm @ 5200
Sources: Legacy and Impreza

 EJ20T(T)
Type: 1994cc EFI DOHC 16-valve 4-cyl turbo boxer (some twin turbo models)
Power: 164kW @ 6400 (varies from 147kW in 89 Legacy to 206kW in Sti)
Torque: 270Nm @ 4000 (over 400Nm in new Sti)
Sources: Legacy RS Turbo, Impreza WRX, Forester RS

 
EJ20TT
Type: 1994cc EFI DOHC 16-valve 4-cyl turbo boxer  twin turbo
Power: 164kW @ 6400 (varies from 147kW in 89 Legacy to 206kW in Sti)
Torque: 270Nm @ 4000 (over 400Nm in new Sti)
Sources: Legacy RS Turbo,

EJ22
Type: 2457cc EFI SOHC 16-valve boxer 4-cyl
Power: 119kW @ 6000
Torque: 211Nm @ 2800
Sources: Legacy and Impreza

EJ25
Type: 2457cc EFI DOHC 16-valve boxer 4-cyl
Power: 119kW @ 6000

Torque: 211Nm @ 2800
Sources: 95-96 Legacy

EG33
Type: 3318cc EFI DOHC 24-valve 6-cyl boxer
Power: 179kW @ 6000
Torque: 309Nm @ 4800
Sources: 92-93 SVX

EZ30D
Type: 2999cc EFI DOHC 24-valve 6-cyl boxer
Power: 161kW @ 6000
Torque: 289Nm @ 4400
Sources: 2000-2002  Jap Outback and