Honda J25A Specs

Honda J25A engine specs: 152.6 ci (2.5L), 6-cylinder, 3.3858" bore x 2.8189" stroke, 10:1 compression.

Dimensions

Displacement	152.6 ci / 2.5 L
Bore	3.3858"
Stroke	2.8189"
Cylinders	6
Compression ratio	10:1
Bore/stroke ratio	1.201

Construction

Block material	aluminum
Head material	aluminum
Valvetrain	SOHC
Fuel type	gas
Advertised HP	200 hp

What these numbers mean

Bore/stroke character	1.201 — oversquare — bore exceeds stroke, which favours higher RPM and larger valves
Mean piston speed at 6,000 RPM	2,819 ft/min — conservative for a street engine
Displacement per cylinder	25.4 ci
Static compression	10:1 — in the range that usually runs on pump premium

Run the numbers for this engine

Each link opens the calculator with this engine's specs already filled in.

• Displacement calculator
• Compression ratio calculator
• Piston ring gap calculator
• Piston speed calculator
• Carburetor CFM calculator

Vehicles (2)

• Honda Inspire
• Honda Saber

Similar engines

• Honda J30A1 — 182.9 ci
• Honda J-series V6 · 3.386" × 3.386" · 10:1 — 182.9 ci
• Honda J30A (Hybrid) — 182.9 ci
• Honda J32A1 — 196.2 ci
• Honda K-series · 3.425" × 3.898" · 10.5:1 — 144 ci
• Honda K-series · 3.425" × 3.898" · 9.7:1 — 144 ci
• Audi CEPA, CZGB, DAZA — 152.6 ci
• Audi 25 I5 Tfsi Ea855evo — 152.6 ci

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