Honda K engine

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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 and newer F series engines found only in the Honda S2000.

Similar to B series, K-Series has two short blocks with the same design; the only difference between them being the deck height. K20 uses the short block with a deck height of 212mm where K23 and K24 block has a deck height of 231.5mm.[1]

Two versions of the Honda i-VTEC system can be found on a K series engine, and both versions can come with variable timing control (VTC) on the intake cam. 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.

K20A[edit]

  • Found In
    • 2001-2006 JDM Civic Type R EP3
    • 2001-2006 JDM Integra Type R DC5
    • 2002-2008 JDM Accord Euro R CL7 (with balance shaft oil pump and rbc intake manifold)
      • Displacement (cc): 1998
      • Bore x Stroke (mm): 86.0 x 86.0
      • Compression Ratio: 11.5:1
      • Rev Limit: 8600rpm
      • iVtec Engagement: 6000rpm
      • Horsepower: 220 bhp at 8000rpm
      • Torque: 206 nm @ 6100rpm
      • oil jets to direct oil under the pistons to keep them cool
      • chromoly flywheel
    • 2007-2013 JDM Civic Type R FD2
      • Displacement (cc): 1998
      • Bore x Stroke (mm): 86.0 x 86.0
      • Compression Ratio: 11.7
      • Rev Limiter: 8600rpm
      • i-Vtec engagement: 5800rpm
      • Horsepower: 225ps @8100rpm
      • Torque: 215 nm @ 6000rpm
      • Intake Manifold: RRC
      • Details for FD2 type r
      • http://asia.vtec.net/Engines/FD2K20AR/

K20A1[edit]

  • Found In
    • 2001-2006 Honda Stream (RN)
      • Power: 156 hp@6500rpm / 192 Nm@4000rpm
      • Redline 6800rpm
      • Compression: 9.8:1
      • BORE X STROKE: 86mm x 86mm
      • SIZE: 1998cc

K20A2[edit]

  • Found In
    • 2001-2005 Honda Civic Type R (European EP3)
      • Displacement: 1,998 cc (121.9 cu in)
      • Compression: 11.0:1
      • Power: 200 hp (147 kW) @ 7400 rpm
      • Torque: 142 lb·ft (193 N·m)* (196 N·m) @ 5900 rpm
      • Redline: 7900 RPM
      • Revlimiter: 8050 RPM
      • i-VTEC Engagement: 6000 RPM
    • 2002-2004 Acura RSX- Type-S (DC5)
      • Displacement: 1,998 cc (121.9 cu in)
      • Compression: 11.0:1
      • Power: 200 hp (147 kW) @ 7400 rpm
      • Torque: 142 lb·ft (193 N·m)* (196 N·m) @ 6000 rpm
      • Redline: 7800 RPM
      • Revlimiter: 8100 RPM
      • i-VTEC Engagement: 5800 RPM
    • 2002-2004 Integra DC5-R (Australia/New Zealand)
      • Displacement: 1,998 cc (121.9 cu in)
      • Compression: 11:1
      • Power: 200 hp (147 kW) @ 7400 rpm
      • Torque: 142 lb·ft (193 N·m)* (196 N·m) @ 6000 rpm
      • Redline: 7800 RPM
      • Revlimiter: 8100 RPM
      • i-VTEC Engagement: 5800 RPM

K20A3[edit]

  • Found In
    • 2002-2006 RSX Base model
    • 2002-2005 Civic Si
    • 2002-2005 Civic Type S (UKDM)
      • 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/Type S.
      • Redline: 6800 rpm
      • i-VTEC Engagement Window: 2200 rpm
      • VTC Timing Shift: 4700 rpm

K20A4[edit]

  • Found in:
    • 2003-2005 Honda Accord (UC1)
    • 2006-2008 Honda Accord (UC3)
    • 2004-2007 Honda Stream (RN3)
    • 2002-2006 Honda CRV (RD4)- 150PS

Power: 158 hp (116 KW) @ 6500 rpm

Torque: 140 lb·ft (190 N·m) @ 4000 rpm

K20A6[edit]

  • 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: 155hp @ 6000 rpm
      • Redline: 6800 rpm
      • i-VTEC: 2500 rpm

K20Z1[edit]

  • Found in:
    • 2005-06 Acura RSX Type-S
    • 2005-06 Honda Integra Type-S (Australia/New Zealand)
      • Displacement: 1,998 cc (121.9 cu in)
      • Compression: 11.0:1
      • Power: 210 hp (154 kW) @ 7800 rpm
      • SAE BHP Measurement changes from 2005 to 2006. Thus, reducing the 2006 Type-S rating from 210 hp to 201 hp on paper.
      • Torque: 143 lb·ft (194 Nm) @ 7000 rpm
      • Redline: 8100 rpm
      • Cutoff: 8300 rpm
      • i-VTEC Engagement Window:5100 rpm

K20Z2[edit]

  • Found in:
    • 2006-2011 Acura CSX (Canada)
    • 2006-2011 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[edit]

This inline-4-cylinder internal combustion engine is found in the US market Honda Civic Si (2006-2011) and 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: 8300 rpm
      • i-VTEC Engagement Window:5800 rpm

K20Z4[edit]

  • 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[edit]

K23A1[edit]

  • Turbocharged
  • Found in:
    • 2007-2012 Acura RDX[2]
      • 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

K24[edit]

K24A4

K24A1[edit]

  • Found in:
    • 2002-2004 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) @ 3600 rpm
      • Redline: 6500 rpm
  • Found in:
    • 2005-2006 Honda CR-V (Per new SAE regulations)
      • 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: 156 hp (116 kW) @ 5900 rpm
      • Torque: 160 lb·ft (217 N·m) @ 3600 rpm
      • Redline: 6500 rpm

K24A2[edit]

  • 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
      • i-VTEC Engagement: 6000 rpm
      • Redline:
      • Oil jets to direct oil to under the pistons to keep them cool.
    • Note: The 2006-2008 K24A2 in the U.S. market Acura TSX has the following improvements[3]
      • Power: 205 hp @ 7000 rpm
      • Torque: 160.5 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 from 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[edit]

  • 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[edit]

  • 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 (109 kW) @ 6500 rpm (166 hp in 2007/2008)
      • Torque: 161 lb·ft (218 N·m) @ 4500 rpm (@4000 rpmin 2007/2008)
      • Redline: 6800 rpm
      • Cable and servo actuated throttle
      • Timing Chain

K24A8[edit]

  • 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
      • i-VTEC engagement: 2,400 rpm (fuel efficiency EGR) 4,500 rpm (performance)
      • 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
      • i-VTEC engagement: 2,400 rpm (fuel efficiency EGR) 4,500 rpm (performance)
      • Electronically controlled throttle

K24Z1[edit]

  • 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[edit]

  • Found in:
    • 2008-12 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[edit]

  • Found in:
    • 2008-12 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: 11.0:1
      • Power: 190 hp @ 7000 rpm
      • Torque: 162 lb·ft @ 4400 rpm
      • Redline: 7100 rpm
  • Found in:
    • 2006-11 Honda civic SI trim models (FD2 & FN2)
      • Displacement: 2,000 cc (122.0 cu in)
      • Bore and Stroke: 87 mm x 99 mm (3.43 x 3.90 inches)
      • Compression: 11.0:1
      • Power: 190 hp @ 7000 rpm
      • Torque: 140 lb·ft @ 5800 rpm
      • Redline: 8500 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 hp @ 7000 rpm
      • Torque: 172 lb·ft (MT), 170 lb·ft (AT) @ 4300 rpm
      • Redline: 7100 rpm

K24Z4[edit]

  • Found in:
    • 2008-2012 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: 161 hp @ 5800 rpm
      • Torque: 161 lb·ft @ 4200 rpm
      • Redline: 6500 rpm

K24Z5[edit]

  • 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[edit]

  • Found in:
    • 2010 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: 10.5:1
      • Power: 180 hp @ 6800 rpm
      • Torque: 161 lb·ft @ 4400 rpm
      • Redline: 7100 rpm
      • Fuel Cutoff: 7200 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

K24Z7[edit]

  • Found in:
    • 2013-Current Acura ILX
      • 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 bhp @ 7000 rpm
      • Torque: 170 lb·ft @ 4400 rpm
      • Redline: 7100 rpm
      • Fuel Cutoff: 7200 rpm
    • 2012-Current Honda Civic Si (US)
    • 2014 Honda Civic Si Sedan and Coupe (US) with re-tuned exhaust boasts higher numbers.
      • Power: 205 bhp @ 7000 rpm
      • Torque: 174 lb·ft @ 4400 rpm

K24Y1[edit]

  • Found in:
    • 2012 Honda CR-V (Thailand)
      • Displacement: 2,354 cc (143.6 cu in)
      • Bore and Stroke: 87 mm x 99 mm
      • Compression: 10.5:1
      • Power: 170 HP (125 kW) @ 6000 rpm
      • Torque: 220 NM (22.4 kg-m)@ 4300 rpm
      • Redline: 6,500 rpm

7000rpm

K24Y2[edit]

  • 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)[edit]

  • 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: 185HP @ 6400 rpm (189 HP SPORT MODEL)
      • Torque: 181 lbs·ft @ 3900 rpm (182 LBFT SPORT MODEL)
      • Redline: 6,800 rpm

K24W2 (Earth Dreams)[edit]

  • 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 190 hp/185 lb-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)[edit]

  • 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
    • VTEC Type: i-VTEC
      • Displacement: 2,356 cc (143.8 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 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 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 190 hp/185 lb-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)[edit]

  • Found in:
    • 2013 Honda Accord Sedan (Thailand and Malaysia)
    • 2014 Honda Odyssey DCA-RC1 (Australia)
      • Displacement: 2,356 cc (143.8 cu in)
      • Bore and Stroke: 87 mm x 99.1 mm
      • Compression: 10.1:1
      • Power: 174 HP (129 kW) @ 6200 rpm
      • Torque: 225 NM (23 kg-m)@ 4000 rpm
      • Redline: 6,600 rpm

K24W7 (Earth Dreams)[edit]

  • Found in:
    • 2015 Acura TLX-S
      • Displacement: 2,356 cc (143.8 cu in)
      • Bore and Stroke: 87 mm x 99.1 mm
      • Compression: 11.1:1
      • Power: 206 HP (154 kW) @ 6800 rpm
      • Torque: 182 lbft @ 3900 rpm
      • Redline: 7,000 rpm

References[edit]

External links[edit]