Honda K engine

This article is about the Honda engine. For the Rover engine series of the same name, see Rover K engine.

A cylinder head from a Honda K20Z3. Components of the i-VTEC system can be seen.

The Honda K series engine is a four-cylinder four-stroke engine introduced in 2001. The K series engines are equipped with DOHC valvetrains and use roller rockers to reduce friction. The engines use a coil-on-plug, distributorless ignition system with a coil for each spark plug. This system forgoes the use of a conventional distributor-based ignition timing system in favor of a computer-controlled system that allows the ECU to control ignition timings based on various sensor inputs. The cylinders have cast iron sleeves similar to the B-series & F-series engines, as opposed to the FRM cylinders found in the H-series & newer F series engines found only in the Honda S2000.

Similar to B series, K-Series has two short blocks with same design; only difference between them is the deck height. K20 uses the short block with deck height 212mm where K23 and K24 block has 231.5mm of deck height

Two versions of Honda's i-VTEC system can be found on K series engines; variable timing control (VTC) can be found on the intake cam of both versions. The VTEC system on engines like the K20A3 only operate on the intake cam; at low rpm only one intake valve is fully opened, the other opening just slightly to create a swirl effect in the combustion chamber for improved fuel atomization. At high rpm, both intake valves open fully to improve engine breathing. In engines such as the K20A2 found in the Acura RSX Type-S, the VTEC system operates on both the intake and exhaust valves, allowing both to benefit from multiple cam profiles.

K Series

K20

K20A

• Found In
  • 2007+ JDM Honda Civic Type-R (FD2)
    • Displacement: 1,998 cc (2.0 L; 121.9 cu in)
    • Bore x Stroke: 86 mm (3.4 in) x 86 mm (3.4 in)
    • Compression: 11.7:1
    • Power: 225 PS (165 kW; 222 hp) @ 8000 rpm
    • Torque: 215 N⋅m (159 lb⋅ft) @ 6100 rpm
    • Redline: 8600 RPM
    • i-VTEC Engagement: 5800 RPM
  • 2002-2008 JDM Honda Accord Euro-R CL7
    • Displacement: 1,998 cc (2.0 L; 121.9 cu in)
    • Bore x Stroke: 86 mm (3.4 in) x 86 mm (3.4 in)
    • Compression: 11.5:1
    • Power: 220 PS () @ 8000 rpm
    • Torque: 206 N⋅m (152 lb⋅ft) @ 6000 rpm
    • Redline: 8600 RPM
    • i-VTEC Engagement: 6200 RPM
  • 2002-2004 Honda Integra Type-R (DC5)
    • Displacement: 1,998 cc (2.0 L; 121.9 cu in)
    • Bore x Stroke: 86 mm (3.4 in) x 86 mm (3.4 in)
    • Compression: 11.5:1
    • Power: 220 PS (160 kW; 220 hp) @ 8000 rpm
    • Torque: 196 N⋅m (145 lb⋅ft) @ 7000 rpm
    • Redline: 8600 RPM
    • i-VTEC Engagement: 6000 RPM
  • 2001-2007 JDM Honda Integra Type-R (DC5)
  • 2001-2005 JDM Honda Civic Type-R (EP3)
    • Displacement: 1,998 cc (2.0 L; 121.9 cu in)
    • Bore x Stroke: 86 mm (3.4 in) x 86 mm (3.4 in)
    • Compression: 11.5:1
    • Power: 215 PS (158 kW; 212 hp) @ 8000 rpm
    • Torque: 200 N⋅m (150 lb⋅ft) @ 7000 rpm
    • Redline: 8600 RPM
    • i-VTEC Engagement: 6000 RPM
  • 2001-2003 JDM Honda Integra iS

K20A2

• Found In
  • 2001-2005 Honda Civic Type-R (European EP3)
  • 2002-2004 Acura RSX-S (DC5)
    • Displacement: 1,998 cc (121.9 cu in)
    • Compression: 11:1
    • Power: 200 hp(147 kW) @ 7000 rpm
    • Torque: 142 lb⋅ft (193 N⋅m)* (196 N·m) @ 5600 rpm
    • Redline: 8200 RPM
    • Revlimiter: 8000 RPM
    • i-VTEC Engagement: 5500 RPM

K20A3

• Found In
  • 2002-2006 RSX
  • 2002-2005 Civic Si
    • Displacement: 1,998 cc (121.9 cu in)
    • Compression: 9.8:1
    • Power: 160 hp(120 kW) @ 6500 rpm(SAE net J1349 Rev 8/04)
    • Torque: 141 lb⋅ft (191 N⋅m)* (191 N·m) @ 5000 rpm(SAE net J1349 Rev 8/04) for Base RSX, 132 lb ft from 02-05 Civic Si.
    • Redline: 6800 rpm
    • i-VTEC Engagement Window: 2200 rpm
    • VTC Timing Shift: 4700 rpm

K20A4

• Found in:
  • 2003-2005 Honda Accord (UC1)
  • 2006-2008 Honda Accord (UC3)
  • 2004-2007 Honda Stream (RN3)
  • 2002-2006 Honda CRV (RD4)

K20A6

• Found in:
  • 2003-2006 Honda Accord (European)
    • Displacement: 1,998 cc (121.9 cu in)
    • Compression: 9.8:1
    • Bore x Stroke: 86 mm x 86 mm
    • Torque: 190 Nm @ 4500 rpm
    • Power: 155 hp @ 6000 rpm
    • Redline: 6800 rpm
    • i-VTEC: 2500 rpm

K20Z1

• Found in:
  • 2005-06 Acura RSX Type-S
  • 2005-06 Honda Integra Type-S (Australia)
    • Displacement: 1,998 cc (121.9 cu in)
    • Compression: 11.0:1
    • Power: 209 hp (154 kW) @ 7800 rpm
    • SAE BHP Measurement changes from 2005 to 2006. Thus, reducing the 2006 Type-S rating from 210hp to 201hp on paper.
    • Torque: 143 lb·ft (194 Nm) @ 7000 rpm
    • Redline: 8000 rpm
    • Cutoff: 8200 rpm
    • i-VTEC Engagement Window:5800 rpm

K20Z2

• Found in:
  • 2006- Acura CSX (Canada)
  • 2006- Honda Civic (JDM)
  • 2006- Honda Accord (Europe)
    • Displacement: 1,998 cc (121.9 cu in)
    • Compression: 9.8:1
    • Bore x Stroke: 86 mm x 86 mm
    • Power: 155 hp (114 kW) @ 6000 rpm (SAE net J1349 Rev 8/04)
    • Torque: 139 lb·ft (188 N·m) @ 4500 rpm
    • Redline: 6800 rpm

K20Z3

This inline-4-cylinder internal combustion engine is found in the US market Honda Civic Si (2006-2011) & Canadian market Acura CSX Type-S. It has an aluminum block with an aluminum head, and a bore and stroke of 86 mm x 86 mm, resulting in a 1,998 cc (121.9 cu in) displacement.

• Found in:
  • 2006-2011 Honda Civic Si (FG2 - Coupe & FA5 - Sedan), 2007-2010 Acura CSX Type-S
    • Displacement : 1,998 cc (121.9 cu in)
    • Compression : 11:1
    • Power: 197 bhp (147 kW) @ 7800 rpm (sae NET Rev 8/04)
    • Torque: 139 lb·ft (189 N·m) @ 6200 rpm (sae NET Rev 8/04)
    • Redline: 8000 rpm
    • Fuel Cutoff: 9500 rpm
    • i-VTEC Engagement Window:5800 rpm

K20Z4

• Found in:
  • 2007-2010 Civic Type R (European) (FN2)
    • Displacement : 1,998 cc (121.9 cu in)
    • Compression : 11:1
    • Power: 201 bhp (148 kW) @ 7500 rpm
    • Torque: 142 lb·ft (193 N·m) @ 5600 rpm
    • Redline: 8000 rpm
    • Fuel Cutoff: 8200 rpm
    • i-VTEC Engagement Window:5400 rpm

K23

K23A1

• Turbocharged
• Found in:
  • 2007-2012 Acura RDX
    • Displacement: 2,300 cc (140.4 cu in)
    • Compression: 8.8:1
    • Power: 240 hp (179 kW) @ 6000 rpm (SAE net)
    • Torque: 260 lb⋅ft (353 N⋅m) @ 4500 rpm (SAE net)
    • Redline: 6800 rpm
    • Bore: 86 mm
    • Stroke: 99 mm

K24

K24A4

K24A1

• Found in:
  • 2002-2006 Honda CR-V
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43x3.90 inches)
    • Compression: 9.6:1
    • Power: 160 hp (120 kW) @ 6000 rpm
    • Torque: 162 lb·ft (220 N·m) @ 5200 rpm
    • Rev limit: 7000 rpm

K24A2

• Found in:
  • 2004-2008 Acura TSX, JDM CL9 Accord Type-S, RB1 Odyssey Absolute
    • Displacement: 2,354 cc (143.6 cu in)
    • Power: 200 PS (150 kW; 200 hp) @ 6800 rpm
    • Torque: 232 N⋅m (171 lb⋅ft) @ 4500 rpm (166 lbft @ 4500 rpm U.S.)
    • Bore: 87 mm
    • Stroke: 99 mm
    • Compression: 10.5:1
    • Redline:
      • Automatic 7100 rpm
      • Sequential Sportshift 7300 rpm (7100 rpm U.S.)
      • Manual 7600 rpm (7100 rpm U.S.)
    • Note: The 2006-2008 K24A2 in the U.S. market Acura TSX has the following improvements
      • Power: 205 hp @ 7000 rpm
      • Torque: 164 lbft @ 4500 rpm
      • Increased intake flow:
        • Intake valve + 1 mm oversize
        • Intake cam High lift lobe with 0.9 mm more lift and 12 degrees more duration
        • Throttle body increased from 60–64 mm
        • Radius on some intake pipes increased from 70–80 mm
      • Increased exhaust flow
        • Exhaust Head pipe increased frm 60–65 mm
        • Higher flow catalytic converter
        • Main (single) exhaust pipe increased from 54–57 mm
        • Rear (twin) pipes increased in diameter from 42.5 to 45 mm
      • Block improvements:
        • Additional air passages in crankcase for reduced pumping losses
      • Other
        • Stronger connecting rods
        • New crankshaft with more counterbalance weight
        • Revised pistons with more valve-piston clearance

K24A3

• Found in:
  • 2003-2007 Honda Accord (Europe) and Japan (JDM) and 2003-2007 Honda Accord Euro CL9 (Australia, New Zealand)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 10.5:1
    • Power: 189 hp (140 kW) @ 6800 rpm
    • Torque: 164.5 lb·ft (223;N·m) @ 4500 rpm
    • VTEC Engagement: 6000 rpm
    • Redline: 7200 rpm

K24A4

• Found in:
  • 2003-2005 Honda Accord(USDM), 2003-2006 Honda Element
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 9.7:1
    • Power: 160 hp (119 kW) @ 5500 rpm (166 hp in 2007/2008)
    • Torque: 160 lb·ft (218 N·m) @ 4500 rpm (@4000 rpmin 2007/2008)
    • Redline: 6800 rpm
    • Cable actuated throttle

K24A8

• Found in:
  • 2006-2007 Honda Accord
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 9.7:1
    • Power: 166 hp (124 kW) @ 5800 rpm
    • Torque: 160 lb⋅ft (217 N⋅m) @ 4000 rpm
    • Redline: 6500 rpm
    • Electronically controlled throttle

• • 2007-2011 Honda Element
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 9.7:1
    • Power: 166 hp @ 5800 rpm
    • Torque: 161 lb⋅ft (218 N⋅m) @ 4000 rpm
    • Redline: 6800 rpm

K24Z1

• Found in:
  • 2007-09 Honda CR-V (RE3, RE4)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 9.7:1
    • Power: 166 hp @ 5800 rpm
    • Torque: 161 lb·ft @ 4200 rpm
    • Redline: 6500 rpm

K24Z2

• Found in:
  • 2008+ Honda Accord LX/LX-P trim models (CP2)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 10.5:1
    • Power: 177 hp @ 6500 rpm
    • Torque: 165 lb·ft @ 4300 rpm
    • Redline: 6800 rpm

K24Z3

• Found in:
  • 2008+ Honda Accord LX-S/EX/EX-L trim models (CP2, CS1)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 10.5:1
    • Power: 190 hp @ 7000 rpm
    • Torque: 162 lb·ft @ 4400 rpm
    • Redline: 7100 rpm

• Found in:
  • 2009+ Acura TSX / Honda Accord / Honda Accord Euro (CU2)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 11.0:1
    • Power: 201 @ 7000 rpm
    • Torque: 172 lb·ft (MT), 170 lb·ft (AT) @ 4300 rpm
    • Redline: 7100 rpm

K24Z4

• Found in:
  • 2008-2009 Honda CR-V (RE7)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 9.7:1
    • Power: 166 hp @ 5800 rpm
    • Torque: 161 lb·ft @ 4200 rpm
    • Redline: 6500 rpm

K24Z5

• Found in:
  • 2009+ Honda Spirior
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 10.5:1
    • Power: 184 @ 6500 rpm (133 kW @ 6500 rpm)
    • Torque: 164 lb·ft @ 4300 rpm (225Nm @ 4300 rpm)
    • Redline: 6800 rpm

K24Z6

• Found in:
  • 2010 Honda CR-V (all trim models)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 10.5:1
    • Power: 180 HP @ 6800 rpm
    • Torque: 161 lbs·ft @ 4400 rpm
    • Redline: 7100 rpm

K24Z7

• Found in:
  • 2012-Current Honda Civic Si (US)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 11.0:1
    • Power: 201 HP @ 7000 rpm
    • Torque: 170 lbs·ft @ 4400 rpm
    • Redline: 7100 rpm
    • Fuel Cutoff: 7500 rpm

• • 2012 Honda CR-V (US)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
    • Compression: 10.0:1
    • Power: 185 HP @ 7000 rpm
    • Torque: 163 lbs·ft @ 4400 rpm
    • Redline: 7000 rpm

K24Y1

• Found in:
  • 2012 Honda CR-V (Thailand)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99 mm
    • Compression: 10.0:1
    • Power: 170 HP (125 kw) @ 6000 rpm
    • Torque: 220 NM (22.4 kg-m)@ 4300 rpm
    • Redline: 6,500 rpm

K24Y2

• Found in:
  • 2012 Honda Crosstour
  • Compression: 10.0:1
  • Power: 192 HP @ 7000 rpm
  • Torque: 162 lbft @ 4400 rpm
  • Redline: 7100 rpm

K24W1(Earth Dreams)

• Found in:
  • 2013 Honda Accord Sedan and Coupe (US)
    • Displacement: 2,356 cc (143.8 cu in)
    • Bore and Stroke: 87 mm x 99.1 mm
    • Compression: 11.1:1
    • Power: 185 HP @ 6400 rpm (189 HP SPORT MODEL)
    • Torque: 181 lbs·ft @ 3900 rpm (182 LBFT SPORT MODEL)
    • Redline: 6,800 rpm

K24W2(Earth Dreams)

• Found in:
  • 2013 Honda Accord
  • Compression: 11.1:1
  • Power: 185 HP @ 6400 rpm
  • Torque: 181 lbft @ 3900 rpm
  • Redline: 6,900 rpm
  • Fuel Cut: 7,200 rpm (Auto/CVT- 7,500 for manual)
  • Head Type: DOHC VTEC
  • VTC Type: i-VTEC

• • • Displacement: 2,354 cc (143.6 cu in)
    • Power: 188 PS (138 kW; 185 hp) @ 6700 rpm
    • Torque: 245 N⋅m (181 lb⋅ft) @ 3900 rpm (181 lbft @ 3900 rpm U.S.)
    • Bore: 87 mm
    • Stroke: 99.1 mm
    • Compression: 11.1:1
    • Redline: 6,900rpm
    • Fuel cut off 7,200rpm (Auto/CVT)
    • Fuel Type: Direct Side Port Fuel Injection/ DEFI ULVe-2
    • Ignition type: ECU Advanced/Controlled - Coil on Plug
      • Automatic 7,000 rpm
      • Manual 7,500 rpm (7,500 rpm U.S.)
    • Note: The Honda K24W2 is based on the K24Y and K24Z engines.
    • Adding: Direct Port Injection, Less Friction, Less Weight, Higher Compression, Revised VTEC and i-VTEC along with all new integrated exhaust manifolds. The 2013 Honda Accord Sport gets 190hp/185lb-ft thanks to a slight ECU tune and larger exhaust piping and higher flow Cat. Also, the K24W series are mounted differently from the previous K series engines. They are mounted like traditional Honda engines, with the integrated exhaust manifold in the front and intake manifold in the back.

K24W3(Earth Dreams)

• Found in:
  • 2013 Honda Accord Sport
  • Compression: 11.1:1
  • Power: 190 HP @ 6700 rpm
  • Torque: 185 lbft @ 3900 rpm
  • Redline: 7,000 rpm
  • Fuel Cut: 7,300 rpm (Auto/CVT- 7,600 for manual)
  • Head Type: DOHC VTEC
  • VTC Type: i-VTEC

• • • Displacement: 2,354 cc (143.6 cu in)
    • Power: 190 PS (140 kW; 190 hp) @ 6700 rpm
    • Torque: 251 N⋅m (185 lb⋅ft) @ 3900 rpm (185 lbft @ 3900 rpm U.S.)
    • Bore: 87 mm
    • Stroke: 99.1 mm
    • Compression: 11.1:1
    • Redline: 7,000rpm
    • Fuel Cut: 7,300rpm (Auto/CVT- 7,500 for manual)
    • Fuel Type: Direct Side Port Fuel Injection/ DEFI ULVe-2|
    • Ignition type: ECU Advanced/Controlled - Coil on Plug
      • Automatic 7,000 rpm
      • Manual 7,500 rpm (7,500 rpm U.S.)
    • Note: The Honda K24W2 and K24W3 are based on the K24Y and K24Z engines.
    • Adding: Direct Port Injection, Less Friction, Less Weight, Higher Compression, Revised VTEC and i-VTEC along with all new integrated exhaust manifolds. The 2013 Honda Accord Sport gets 190hp/185lb-ft thanks to a slight ECU tune and larger exhaust piping and higher flow Cat. Also, the K24W series are mounted differently from the previous K's. They are mounted like traditional Honda engines, with the integrated exhaust manifold in the front and intake manifold in the back.

• Found in:
  • 2013 Honda Accord Sedan Sport (US)
    • Displacement: 2,354 cc (143.6 cu in)
    • Bore and Stroke: 87 mm x 99.1 mm (3.43 x 3.90 inches)
    • Compression: 11.1:1
    • Power: 190 HP @ 6700 rpm
    • Torque: 185 lbs·ft @ 3900 rpm
    • Redline: 7,000 rpm

K24W4(Earth Dreams PGM-FI)

• Found in:
  • 2013 Honda Accord Sedan (Thailand)
    • Displacement: 2,356 cc (143.8 cu in)
    • Bore and Stroke: 87 mm x 99.1 mm
    • Compression: 10.1:1
    • Power: 174 HP (128 kw) @ 6200 rpm
    • Torque: 225 NM (23 kg-m)@ 4000 rpm
    • Redline: 6,500 rpm

External links

• Honda engine pages: i-VTEC DOHC, 2.0L DOHC i-VTEC
• K Series VTEC Breakdown: K Series VTEC Breakdown