This page is dedicated to my 94 JDM Honda Prelude VTEC 4WS
(KJ)
236 HP (up to 311 HP with Nitrous)
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Start my motor!
OEM engine data of the
J-spec BB1
| Engine code | H22A (J-Spec) | ||||
| Displacement | 2156.8 cm3 | ||||
| Power | 147 kW (197 HP / 200 PS) @ 6800 min-1 | ||||
| Torque | 218.7 Nm (161.3 lb-ft) @ 5500 min-1 | ||||
| Top speed |
255 km/h (158.4 mph) @ 7490 min-1  |
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| Volumetric efficiency (VE) @ peak HP | 99% ? | ||||
| Volumetric efficiency (VE) @ peak Torque | 105% ? | ||||
| 0-100 km/h | 6.9 s | ||||
| Red-line | 7400 min-1 | ||||
| Fuel cut-off / kick-in | 7684 / 7500 min-1 (ECU values) | ||||
| Fuel type | min. 95 ROZ petrol | ||||
| Transmission (M/T) | M2A4 or M2B4 (LSD) | ||||
Block design
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closed deck; cylinder liners from fibre-reinforced metal (FRM); piston bottoms cooled with high-pressure oil squirters. | ||||
| Compression ratio | 10.6:1 | ||||
| Deck height | 219.52 mm | ||||
| Piston Down Bore @ TDC | 0.15 mm | ||||
| Head gasket thickness | 0.66 mm | ||||
| Cylinder bore | 87.0 mm | ||||
| Cylinder stroke | 90.7 mm | ||||
| Cylinder wall | 7 mm | ||||
| Rod length | 143.00 mm | ||||
| Rod/Stroke ratio | 1.577:1 | ||||
| Piston compression height | 31.00 mm | ||||
| Piston (wrist) pin diameter | 22 mm | ||||
| Cylinder head chamber volume | 52.9 cm3 | ||||
| Total combustion volume | 56.2 cm3 | ||||
| Connecting rod big end width | 23.75 mm | ||||
| Connecting rod big end bore diameter | 51 mm | ||||
| Valve angles | 29° | ||||
| Valve head diameter IN / EX | 35 mm / 30 mm | ||||
| IN / EX valve lift [Pri/Mid/Sec] | [0.26"/0.45"/0.31"] / [0.24"/0.41"/0.30"] ? | ||||
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IN / EX valve
duration [Pri/Mid/Sec] NB: 0.05" timing base |
[185°/235°/180°] / [190°/235°/185°] ? | ||||
| Primary reduction | direct 1:1 | ||||
| 1st gear ratio | 3.307 | ||||
| 2nd gear ratio | 1.950 | ||||
| 3rd gear ratio | 1.360 | ||||
| 4th gear ratio | 1.034 | ||||
| 5th gear ratio (overdrive) | 0.787 | ||||
| Reverse gear ratio | 3.000 | ||||
| Final reduction | 4.266 | ||||
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| H22A | 4WS Operation |
TCS Operation |
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various
OEM engine dyno plots
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4th Prelude H22A vs F22B |
5th Prelude SiR vs Type-S |
6th Accord SiR vs Sir-T |
7th Accord Euro-R |
My Prelude's performance in year 2007 (without nitrous)
| Dyno Pull Results | ||||||||
| Venue: | J.P. Autotechnics Ltd. | |||||||
| Model: | 250 whp rolling road, non-programmable, calibrated twice per year | |||||||
| Date: | 15.09.2007 09:00 | |||||||
| Ambient air: | 14°C, 103kPa, dry sunny (~70% relH.) | |||||||
| Gear: | 4th | |||||||
| measured at wheels @ 7500 rpm | calculated at flywheel @ 7500 rpm (15% loss) | |||||||
| measured BHP | SAE corrected BHP | PS / HP | Nm (lb-ft) | |||||
| 1st Run | 221 | 199 | 238 / 234 | 223 / 164 | ||||
| 2nd Run | 210 | 189 | 226 / 223 | 212 / 156 | ||||
| 3rd Run | 237 | 214 | 255 / 251 | 239 / 176 | ||||
| average | 223 | 201 | 240 / 236 | 224 / 165 | ||||
| compare stock (see above dyno plot) | 189 / 186 | 177 / 131 | ||||||
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