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Honda J35A4 specs: 3.5L (212.1 ci) 6-cylinder, 89 x 93 mm (3.5039 x 3.6614 in) bore and stroke, 10:1 compression. Rated 240 hp, 2002–2004.
The Honda J35A4 is close to square: 3.5039" bore against 3.6614" stroke, within 4.3%, which splits the difference between a high-revving layout and a torque layout. The 3.6614" stroke puts mean piston speed at 4,000 ft/min around 6,550 RPM, which is where a production bottom end is generally considered at its limit. Each of the 6 cylinders displaces 35.4 ci (579 cc).
10:1 on aluminum heads is in the range that usually runs on pump premium; aluminum sheds heat faster than iron, which makes the same number a little more forgiving.
It is one of 30 engines in the J-series V6 family, sitting between the 152.6 ci and 223.6 ci members. 3 factory variants share these dimensions, rated at 240 hp across 2002–2004.
| Displacement | 212.1 ci / 3.5 L |
|---|---|
| Bore | 3.5039" |
| Stroke | 3.6614" |
| Cylinders | 6 |
| Configuration | V6 |
| Compression ratio | 10:1 |
| Bore/stroke ratio | 0.957 |
| Block material | aluminum |
|---|---|
| Head material | aluminum |
| Valvetrain | SOHC |
| Fuel type | gas |
| Advertised HP | 240 hp |
| Years | 2002–2004 |
| Year | Version | HP @ rpm | Torque @ rpm | Comp. |
|---|---|---|---|---|
| 2002 | J35A4 net | 240 @ 5500 | 242 lb-ft @ 4500 | 10:1 |
| 2003 | J35A4 net | 240 @ 5500 | 242 lb-ft @ 4500 | 10:1 |
| 2004 | J35A4 net | 240 @ 5500 | 242 lb-ft @ 4500 | 10:1 |
Factory specification sheet.
| Bore/stroke character | 0.957 — square — bore and stroke are within 5%, a balanced compromise |
|---|---|
| Mean piston speed at 6,000 RPM | 3,661 ft/min — in the range typical of performance street engines |
| Displacement per cylinder | 35.4 ci |
| Static compression | 10:1 — in the range that usually runs on pump premium |
Each link opens the calculator with this engine's specs already filled in.
These records share identical bore, stroke, displacement and compression. They differ by model year and factory power rating.
| Year | Advertised HP | Code |
|---|---|---|
| 2002 | 240 hp | J35A4 |
| 2003 | 240 hp | J35A4 |
| 2004 | 240 hp | J35A4 |
2 factory vehicles, 2002–2004. Each year opens that model's engine table.