Subaru EJ 8:1 Specs

Subaru EJ · 3.622" × 2.953" · 8:1 engine specs: 121.7 ci (2L), 4-cylinder, 3.622" bore x 2.9528" stroke, 8:1 compression.

Dimensions

Displacement121.7 ci / 2 L
Bore3.622"
Stroke2.9528"
Cylinders4
Compression ratio8:1
Bore/stroke ratio1.227

Construction

Block materialaluminum
Head materialaluminum
ValvetrainDOHC
Fuel typegas
Advertised HP220–280 hp

What these numbers mean

Bore/stroke character1.227 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM2,953 ft/min — conservative for a street engine
Displacement per cylinder30.4 ci
Static compression8:1 — low by modern standards, generally happy on regular pump fuel

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Variants sharing these dimensions (3)

These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.

YearAdvertised HPCode
220 hpEJ20G/K/R/T/X/Y (Turbo DOHC), EJ20G, EJ20G/K/R/T/V (Turbo DOHC), EJ20G/K/R/5/7 (Turbo DOHC), EJ20G/K/R/T (Turbo DOHC)
227 hpEJ205/207 (Turbo DOHC AVCS), EJ207, EJ205, EJ20T, EJ20 (Turbo SOHC)
280 hpEJ207, EJ207 (Turbo DOHC STI), EJ20K

Vehicles (18)

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