Acura J32A1 Specs: 89 x 86 mm (3.5039 x 3.3858 in), 225 hp

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The same engine also has a main page: Honda J32A1.

Acura J32A1 specs: 3.2L (196 ci) 6-cylinder, 89 x 86 mm (3.5039 x 3.3858 in) bore and stroke, 9.8:1 compression. Rated 225 hp, 1999–2003.

The Acura J32A1 is close to square: 3.5039" bore against 3.3858" stroke, within 3.5%, which splits the difference between a high-revving layout and a torque layout. The 3.3858" stroke does not reach 4,000 ft/min of mean piston speed until about 7,100 RPM, so piston speed is not what limits this engine's revs — valvetrain and breathing are. Each of the 6 cylinders displaces 32.7 ci (535 cc).

9.8:1 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 18 engines in the Honda J-series family, sitting between the 182.9 ci and 223.6 ci members. 5 factory variants share these dimensions, rated at 225 hp across 1999–2003.

Dimensions

Displacement196 ci / 3.2 L
Bore3.5039"
Stroke3.3858"
Cylinders6
ConfigurationV6
Compression ratio9.8:1
Bore/stroke ratio1.035

Construction

Block materialaluminum
Head materialaluminum
ValvetrainSOHC
Fuel typegas
Redline6,300 rpm (factory limit)
Advertised HP225 hp
Years1999–2003

Factory ratings by year

YearVersionHP @ rpmTorque @ rpmComp.
1999J32A1 net225 @ 5500216 lb-ft @ 50009.8:1
2000J32A1 net225 @ 5600216 lb-ft @ 47009.8:1
2001J32A1 net225 @ 5600216 lb-ft @ 47009.8:1
2002J32A1 net225 @ 5600216 lb-ft @ 47009.8:1
2003J32A1 net225 @ 5600216 lb-ft @ 47009.8:1

Factory specification sheet.

What these numbers mean

Bore/stroke character1.035 — square — bore and stroke are within 5%, a balanced compromise
Mean piston speed at 6,000 RPM3,386 ft/min — conservative for a street engine
Displacement per cylinder32.7 ci
Static compression9.8:1 — in the range that usually runs on pump premium

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Variants sharing these dimensions (5)

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

YearAdvertised HPCode
1999225 hpJ32A1
2000225 hpJ32A1
2001225 hpJ32A1
2002225 hpJ32A1
2003225 hpJ32A1

What cars have the J32A1?

2 factory vehicles, 1999–2003. Each year opens that model's engine table.

Similar engines

← All Honda J-series engines