Put together all the specs I could find on the H22A4.
Tryin to maybe get it posted as a sticky? Lets add to it and clear it up.

H22A4
Found in:
American 5th gen Prelude Base and Type-SH (BB6)
Canadian 5th gen Prelude Base, Type-SH, and SE (BB6)
Australian 1997-1998 Prelude VTi-R and VTi-R ATTS (BB6)
# of Camshafts: 2
# of Cylinders: 4
# of Valves: 16 (2 Intake and 2 Exhaust Per Cylinder)
Bore: 87.0 mm (3.425 in)
Compression Height: 31.0 mm (1.221 in)
Compression Ratio:10.1:1
Cylinder Block Material:Aluminum
Cylinder Head Material:Aluminum
Cylinder Liner Material:FRM (Fiber Reinforced Metal)
Cylinder Compression #'s:

• @ 250 rpm and wide open throttle
• Maximun: 1270 kPa (184.2 psi)
• Minumum: 930 kPa (134.9 psi)
• Maximun Variation: 200 kPa (29.0 psi)

Deck Height: 219.5 mm (8.643 in)
Deck Type: Open
Displacement: 2,157 cc (131.6 cu in)
ECU Code: P5M
Engine Rotation: Counter-Clockwise
Exhaust Valve Diameter: 30 mm (1.18 in)
Fuel System: PGM-FI Multi-Point, Speed Density
Fuel System Type: Return Style
Fuel Injector Volume (Individual): 290cc
Fuel Injector Design: Saturated
Coolant Capacity:

• Manual: 1.82 Gal (Total) / 0.87 Gal (Change)
• Auto: 1.80 Gal (Total) / 0.85 Gal (Change)
• Reserve Tank: 0.16 Gal

Fuel Pressure: 47-54psi
Firing Order: 1-3-4-2
Head Chamber Volume: 53.8 cc
Horsepower: 197 @ 7,000 RPM
Intake Plenum Material: Aluminum
Ignition Type: Electronically Controlled Distributor
Intake Plenum Variable Length Runner System: IAB (Intake Air Bypass) “Secondary Butterflies” Activation/Opening @ 4,900rpm
Intake Valve Diameter: 35 mm (1.38 in)
Main Bearing Width: 19.9 mm (.784 in)
Main Bore: 51.00 mm (2.008 in)
On Board Diagnostics: OBDIIB
Engine Oil Type and Capacity:

• Change w/ Filter: 5.1 Quarts (4.8 Liters)
• Change w/o Filter: 4.8 Quarts (4.5 Liters)
• Below 95°F (35°C): SAE 5W-30
• Above 14°F (-10°C): SAE 10W-30

Peak Volumetric Efficiency: 102%
Piston Displacement: 1.3 cc
Rod Bearing Width: 19.35 mm (.762 in)
Low Oil Pressure Switch Pressure: Less than 4.3psi
Rod Journal Diameter: 47.95 mm (1.888 in)
Rod Length: 143.0 mm (5.63 in)
Rod Width: 23.75 mm (.935 in)
Rod/Stroke Ratio: 1.59:1
Stroke: 90.70 mm (3.571 in)
Spark Plug Gap: 0.039-0.043''
Sensors/Solenoids/Valves/Actuators:

• Low Oil Pressure Switch, Oil Pressure Switch, Knock, Manifold Absolute Pressure, Engine Coolant Temp, Intake Air Temp, Throttle Position, Crankshaft Position, Vehicle Speed, Camshaft Position (Distributor), EGR Valve, EVAP Purge Solenoid, IAB Vacuum Actuator, VTEC Solenoid, VTEC Oil Pressure Switch, IACV, FITV

Torque: 156 lb. ft. @ 5,250 rpm
Throttle Body Diameter: 62mm
Valve Cover Color: Black
VTEC Engagement: 5,250 rpm
Wrist Pin Diameter: 22 mm (.866 in)

’97-’01 USDM Base Manual Transmission:
CODE: M2Y4
1st: 3.285
2nd: 1.956
3rd: 1.344
4th: 1.034
5th: 0.812
Rev: 3.000
Final: 4.266

’97-’01 USDM Type-SH w/ATTS Manual Transmission:
CODE: M2U4
1st: 3.285
2nd: 1.956
3rd: 1.344
4th: 1.034
5th: 0.812
Rev: 3.000
Final: 4.266

 

Bump

 

C'mon Sticky!

 

not accurate enough to be sticky

 

Would like to find and add:
Camshaft lift, angle, duration
Valve spring seat pressure
ECU ignition and fuel map data

 

BrianCrower.com | RunBC.com // Honda // H22 / H22A