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Author Topic: Honda H22A Engine Specifications  (Read 768 times)
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jdmmonkey
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« on: July 19, 2008, 12:29:01 AM »
Displacement (cc):2157
Power (bhp@rpm):@ 7,200 rpm: 190 PS (187 hp/140 kW) (CD6 Accord); 200 PS (BB1/4/6 Prelude SiR's); 220 PS (Euro-R & Prelude Type-S) ;A7 212 bhp DIN (Type-R)(142–164 kW)
Torque (ft/lbs@rpm):@6,500 rpm: 156–167 ft·lbf (207–217 Nm)
Compression Ratio:10.0:1 (North America); 10.6–11.0:1 (Japan)
Bore (mm):87
Stroke (mm):90.7
Cam Design:DOHC 16 valve, VTEC
Redline:7600 rpm
Rev Cut:7800 rpm (read as 8500rpm on stock tachometer)

Images, for reference are:

Black Top = Base and Type-SH 97-01 + European Prelude VTi-R Honda Prelude.
Red Top = JDM Type-S Honda Prelude, CH6 Type-R and 00-01 CL1 Euro-R.


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Located in Johannesburg, South Africa, Toyama Racing Spirit specialises in performance tuning serving the public as the authorized dealer for AEM Electronics in SA.

Online Shop - http://www.toyamaracingspirit.com/shop/
Ask our sales team for a quote - sales.at.toyamaracingspirit.com
jdmmonkey
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« Reply #1 on: October 25, 2008, 05:33:35 PM »
Okay, I've endured much pain working out specifications from our H22A motors, hope you enjoy:

Block information at a glance: (4 Cylinder H22A BB6 - BB8 excluding Type S)

Bore: 87mm
Stroke: 90.70mm
Cyl. Volume: 539.18cc
Total Volume: 2156.73cc

Cylinder Head:

2 Valves per port, 4 Valves per cyl.
Intake valve diameter: +- 32.71mm
Exhaust valve diameter: +- 27.32mm
Intake Valve Flow @ 1.52 mm: +- 36 cfm
Exhaust Valve Flow @ 1.52 mm: +- 31 cfm
Intake Valve Flow @ 11.68 mm: +- 173 cfm
Exhaust Valve Flow @ 11.68 mm: +- 143 cfm

Compression Ratio:

10.0:1 base line, not using 10.6:1, chances of us having the 200HP - 205HP motors is slim.
Combustion area: 59.91cc

Induction System:

Estimated induction flow rate is around 400cfm @ 1.50 inHg
Manifold type: not too sure what to call it? Dual stage runner type?

Camshaft Specifications: (This wont make sense to you if you dont understand camshaft theory)

NOTE: 0 deg advance/retard

Intake Lift at valve: 16.66mm
Exhaust Lift at valve: 16.26mm
Lifter Type: Roller Hydrolic?
Ramp Rate: 4.3
Seat-to-Seat IVO: 43
Seat-to-Seat IVC: 75
Seat-to-Seat EVO: 80
Seat-to-Seat EVC: 48
True ICA: 106
True ECA: 106
LCA: 106
Intake Duration: 298
Exhaust Duration: 308
Valve Overlap: 91

Power VS Engine Pressure (est. figures):

3500 rpm: 55.93kW @ IM Pressure of 14.67 psi
5500 rpm: 122.29kW @ IM Pressure of 14.53 psi VTEC
7500 rpm: 149.14kW @ IM Pressure of 14.33 psi
7800 rpm: 146.90kW @ IM Pressure of 14.28 psi

Torque VS VE (est. figures):

3500 rpm: 153.03Nm @ 67.4VE
5500 rpm: 211.27Nm @ 94.2VE VTEC
7500 rpm: 189.60Nm @ 97.5VE
7800 rpm: 174.70Nm @ 96.4VE

Piston Speeds:

2000 rpm: 1031 fpm
5500 rpm: 3273 fpm VTEC
7500 rpm: 4464 fpm

Enjoy.
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Located in Johannesburg, South Africa, Toyama Racing Spirit specialises in performance tuning serving the public as the authorized dealer for AEM Electronics in SA.

Online Shop - http://www.toyamaracingspirit.com/shop/
Ask our sales team for a quote - sales.at.toyamaracingspirit.com
jdmmonkey
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« Reply #2 on: October 25, 2008, 05:48:05 PM »
If anyone gets cam gears before me, I want you to try adjusting cam timing for oem cams as follows, I predict the results:

-1 deg = slight bump in power peak, loss in torque (slight)
+3 deg = Middle gain, bump up torque and power through out range, don't affect peak power.
+4 deg = Zero peak gain (Actually just over 1.5kW loss), slight power gain through rpm ranges, great improvement of peak torque.

I prefer option two.  Cool
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Located in Johannesburg, South Africa, Toyama Racing Spirit specialises in performance tuning serving the public as the authorized dealer for AEM Electronics in SA.

Online Shop - http://www.toyamaracingspirit.com/shop/
Ask our sales team for a quote - sales.at.toyamaracingspirit.com
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« Reply #3 on: May 06, 2011, 01:03:20 PM »
The cam degrees are pretty decent standard hey. Thanks for all the hard work buddy.
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jdmmonkey
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« Reply #4 on: August 18, 2011, 02:26:36 PM »
Don't let the IN 298 / EX 308 confuse. That is advertised duration at .010" on the VTEC lobe (the most aggressive.

If you want to compare the VTEC lobe to another stock non vtec camshaft (to say it's pretty decent / aggressive stock) you're looking for the middle lobe at around .050"

This is:

IN 231 / EX 234.

Which is pretty stock as far as camshafts go, for example my Mazda FE5A cams, stock cams with a duration of 245 IN / EX - which is fairly aggressive for stock

If you're looking for a nice street cam for the H22A motor, look at durations IN 255 / EX 248

SIDE NOTE: Type S cams actually have less overall advertised duration at .050" but outperform the stock camshafts due to their increased lift (necessitating a valvetrain upgrade).
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Located in Johannesburg, South Africa, Toyama Racing Spirit specialises in performance tuning serving the public as the authorized dealer for AEM Electronics in SA.

Online Shop - http://www.toyamaracingspirit.com/shop/
Ask our sales team for a quote - sales.at.toyamaracingspirit.com
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