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Honda K engine

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Honda K24A4 2.4L DOHC i-VTEC Engine installed in 2003 Honda Accord

The Honda K-series engine is a line of four-cylinder four-stroke car engine introduced in 2001. The K-series engines are equipped with DOHC valvetrains and use roller rockers on the cylinder head 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- and F-series engines, as opposed to the FRM cylinders found in the H- and newer F-series engines found only in the Honda S2000.

Similar to B series, the K-series car engines have 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 212 mm (8.3 in) where K23 and K24 block has a deck height of 231.5 mm (9.1 in).[1]

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

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 engine speeds, 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. A modified K20C engine is used in motorsport, as the Sports Car Club of America Formula 3 and 4 series that run in North America both use a K20C engine, with the Formula 4 engine not having a turbocharger. These are gaining a following in the import scene, but also among hot rodders and kit car enthusiasts, because they can be put in longitudinal rear wheel drive layouts.

Another significant difference between K-series engines is the alignment of the crankshaft to the center line of the bore. The K20C1 engine block has an offset alignment.[2] Engines that do not have their crank shaft aligned to the bore are known as Desaxe engines. On the K20C1 engine this allows the power stroke to have more leverage and less thrust waste on sidewalls.

K20

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K20A (i-VTEC)

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Honda K20A (i-VTEC)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2001–2011
Layout
ConfigurationI4
Displacement2.0 L; 121.9 cu in (1,998 cc)
Cylinder bore86 mm (3.386 in)
Piston stroke86 mm (3.386 in)
Cylinder head materialNSH 14
ValvetrainDOHC 4 valves x cyl w/ i-VTEC on some models
Compression ratioSee left for specific application.
Combustion
Fuel systemFuel injection
ManagementECU
Fuel typePetrol
Cooling system
Output
Power outputSee left for specific application.
Torque outputSee left for specific application.
Dimensions
Dry weight403 pounds (183 kg) (with gearbox), 275 pounds (125 kg) (without gearbox)
Applications
Engine Application Compression Power Torque Redline Rev limiter i-VTEC
engagement 		Intake
Manifold
K20A
(High Performance) 		2001–2006 Honda Civic Type R (JDM) 11.5:1 212 hp (158 kW) @ 8000 RPM 149 lb⋅ft (202 N⋅m) @ 7000 RPM 8400 RPM 6000 RPM PRC
2001–2006 Honda Integra Type R (JDM) 11.5:1 217 hp (162 kW) @ 8000 RPM 152 lb⋅ft (206 N⋅m) @ 7000 RPM 8400 RPM 8600 RPM 6000 RPM PRC
2002–2008 Honda Accord Euro R (JDM) 11.5:1 217 hp (162 kW) @ 8000 RPM 152 lb⋅ft (206 N⋅m) @ 6000 RPM 8400 RPM 6000 RPM RBC
2007–2011 Honda Civic Type R (JDM) 11.7:1 221 hp (165 kW) @ 8000 RPM 159 lb⋅ft (215 N⋅m) @ 6100 RPM 8400 RPM 8600 RPM 5800 RPM RRC
K20A (Eco) 2000–2006 Honda Stream (JDM) (RN3, FWD)[3] 9.7:1 154 hp (115 kW) @ 6500 RPM 139 lb⋅ft (188 N⋅m) @ 4000 RPM 6800 RPM PNC
2000–2006 Honda Stream (JDM) (RN4, AWD) 9.8:1 156 hp (116 kW) @ 6500 RPM 140 lb⋅ft (190 N⋅m) @ 4000 RPM 6800 RPM 7000 PNC
2001–2004 Honda CR-V (JDM) 9.8:1 150 hp (112 kW) @ 6500 RPM 140 lb⋅ft (190 N⋅m) @ 4000 RPM 6800 RPM PNA
2001–2006 Honda Integra Type S (JDM)[4] 9.8:1 158 hp (118 kW) @ 6500 RPM 141 lb⋅ft (191 N⋅m) @ 4000 RPM 6800 RPM PNC
2001–2005 Honda Stepwgn (JDM)[5] 9.8:1 158 hp (118 kW) @ 6500 RPM 141 lb⋅ft (191 N⋅m) @ 4000 RPM 6800 RPM PNC
2001–2005 Honda Stepwgn Spada (JDM)[6] 9.7:1 158 hp (118 kW) @ 6500 RPM 141 lb⋅ft (191 N⋅m) @ 4000 RPM 6800 RPM PNC
2005–2009 Honda Stepwgn (JDM)[7] 9.6:1 153 hp (114 kW) @ 6000 RPM 139 lb⋅ft (188 N⋅m) @ 4500 RPM 6800 RPM RTA
2002–2008 Honda Accord (JDM) (CL7-CM1, FWD)[8] 9.8:1 153 hp (114 kW) @ 6000 RPM 139 lb⋅ft (188 N⋅m) @ 4500 RPM 6800 RPM RAA
2002–2008 Honda Accord (JDM) (CL8, AWD)[8] 9.8:1 150 hp (112 kW) @ 6000 RPM 137 lb⋅ft (186 N⋅m) @ 4500 RPM 6800 RPM RAA
2004–2009 Honda Edix (JDM)[9] 9.7:1 154 hp (115 kW) @ 6500 RPM 139 lb⋅ft (188 N⋅m) @ 4000 RPM 6800 RPM PNC
2005–2010 Honda Civic (JDM)[10] 9.6:1 153 hp (114 kW) @ 6000 RPM 139 lb⋅ft (188 N⋅m) @ 4500 RPM 6800 RPM RTB
K20A1 2001–2006 Honda Stream (RN3, FWD) 9.7:1 156 hp (116 kW) @ 6500 RPM 139 lb⋅ft (188 N⋅m) @ 4000 RPM 6800 RPM PNA
2001–2006 Honda Stream (RN4, AWD) 9.8:1 158 hp (118 kW) @ 6500 RPM 140 lb⋅ft (190 N⋅m) @ 4000 RPM 6800 RPM PNC
K20A2 2001–2006 Honda Civic Type R (EDM) 11.0:1 200 hp (150 kW) @ 7400 RPM 139 lb⋅ft (188 N⋅m) @ 5900 RPM 7900 RPM 8250 RPM 5800 RPM PRB
2002–2004 Acura RSX Type S 11.0:1 200 hp (149 kW) @ 7400 RPM 142 lb⋅ft (193 N⋅m) @ 6000 RPM 7900 RPM 8250 RPM 5800 RPM PRB
2002–2004 Honda Integra Type R (AUDM/NZDM) 11.0:1 200 hp (149 kW) @ 7400 RPM 142 lb⋅ft (193 N⋅m) @ 6000 RPM 7800 RPM 8100 RPM 5800 RPM
K20A3 2002–2006 Acura RSX 9.8:1 160 hp (119 kW) @ 6500 RPM 142 lb⋅ft (193 N⋅m) @ 4000 RPM 6800 RPM 7000 RPM 2300 RPM[11] PNC
2002–2005 Honda Civic 9.8:1 160 hp (119 kW) @ 6500 RPM 141 lb⋅ft (191 N⋅m) @ 4000 RPM 6800 RPM 7000 RPM 2300 RPM PRB
2002–2005 Honda Civic Si USDM 9.8:1 160 hp (119 kW) @ 6500 RPM 132 lb⋅ft (179 N⋅m) @ 4000 RPM 6800 RPM 7000

RPM

2300 RPM PRB
2002–2005 Honda Civic Type S EDM 9.8:1 160 hp (119 kW) @ 6500 RPM 132 lb⋅ft (179 N⋅m) @ 4000 RPM 6800 RPM 7100 RPM 2200 RPM PRB
2003–2006 Honda Civic 2.0 i-VTEC (SEA) 9.8:1 155 hp (116 kW) @ 6500 RPM 131 lb⋅ft (177 N⋅m) @ 5000 RPM 6800 RPM 7000 RPM PRB
K20A4 2002–2006 Honda CR-V 9.8:1 156 hp (116 kW) @ 6500 RPM 140 lb⋅ft (190 N⋅m) @ 4000 RPM 6800 RPM PNA
K20A6 2003–2006 Honda Accord (EDM) 9.8:1 155 hp (116 kW) @ 6500 RPM 140 lb⋅ft (190 N⋅m) @ 4000 RPM 6800 RPM 2500 RPM RAA
2003–2006 Honda Accord (ADM) 9.8:1 155 hp (116 kW) @ 6500 RPM 140 lb⋅ft (190 N⋅m) @ 4000 RPM 6800 RPM 2500 RPM RAA
K20A7 2003–2007 Honda Accord (SEA) 9.8:1 150 hp (112 kW) @ 6000 RPM 137 lb⋅ft (186 N⋅m) @ 4500 RPM 6800 RPM RAA
K20A9 2004-2007 Honda FR-V (EDM) 9.8:1 150 hp (112 kW) @ 6500 RPM 142 lb⋅ft (192 N⋅m) @ 4000 RPM 6800 RPM 2500 RPM PNC
Additional notes

K20A Spec R engine (FD2 Civic Type R)

  • Chromoly flywheel, higher-tensile strength connecting rods, high-compression pistons, stiffer valve springs, higher-lift hollow camshafts with more duration, and 2007–2011 cylinder-head intake-port and exhaust-port surface polishing used in NSX-R.[12] The JDM K20A type-R engine block would be removed from production assembly line by an experienced Honda engine technician to torque the connecting rod bolts to factory specification by hand using micrometer to measure connecting rod bolt stretching. Then the JDM K20A type-R engine block would be returned to the production assembly line to complete the engine building process.

K20B (i-VTEC I)

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Honda K20B (i-VTEC I)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2003–2006
Layout
ConfigurationI4
Displacement2.0 L; 121.9 cu in (1,998 cc)
Cylinder bore86 mm (3.386 in)
Piston stroke86 mm (3.386 in)
ValvetrainDOHC 4 valves x cyl w/ i-VTEC
Compression ratio10.0:1
Combustion
Fuel systemDirect fuel injection
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output156 hp (116 kW) @ 6300 rpm
Torque output139 lb⋅ft (188 N⋅m) @ 4600 rpm
  • Injection Pressure: 10 megapascals (99 atm)
  • Center Fuel Injection with swirl guide
  • Air-Fuel Ratio:
    • Normal driving cycle: 65:1 (ultra-lean combustion)
    • Acceleration/High load driving cycle: 14.7:1 (Stoichiometric)
  • Deep Piston Cavity formed in top of Pistons
  • Intake Manifold code: PPD
  • Application: 2003–2006 Honda Stream Absolute

K20Z (i-VTEC)

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Honda K20Z (i-VTEC)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2005–2015
Layout
ConfigurationI4
Displacement2.0 L; 121.9 cu in (1,998 cc)
Cylinder bore86 mm (3.386 in)
Piston stroke86 mm (3.386 in)
ValvetrainDOHC 4 valves x cyl w/ i-VTEC on some models
Compression ratioSee left for specific application.
Combustion
Fuel systemFuel injection
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power outputSee left for specific application.
Torque outputSee left for specific application.
Applications
Engine Application Compression Power Torque Redline Rev limiter i-VTEC
engagement 		Intake
Manifold
K20Z1 2005–2006 Acura RSX Type S 11.0:1 210 hp (160 kW) @ 7800 RPM[a] 143 lb⋅ft (194 N⋅m) @ 6200 RPM 8100 RPM 8300 RPM 5800 RPM PRB
2005–2006 Honda Integra Type S (AUDM/NZDM) 11.0:1 210 hp (160 kW) @ 7800 RPM 143 lb⋅ft (194 N⋅m) @ 6200 RPM 8100 RPM 8300 RPM 5800 RPM
K20Z2 2006–2011 Acura CSX 9.8:1 153 hp (114 kW) @ 6000 RPM 139 lb⋅ft (188 N⋅m) @ 4500 RPM 6800 RPM
2006–2008 Honda Accord (EDM) 9.8:1 153 hp (114 kW) @ 6000 RPM 139 lb⋅ft (188 N⋅m) @ 4500 RPM 6800 RPM RBA
2006–2010 Honda Civic (SEA) 9.8:1 153 hp (114 kW) @ 6000 RPM 139 lb⋅ft (188 N⋅m) @ 4500 RPM 6800 RPM RTB
K20Z3 2006–2011 Honda Civic Si 11.0:1 197 hp (147 kW) @ 7800 RPM[b] 139 lb⋅ft (188 N⋅m) @ 6200 RPM[b] 8000 RPM 8300 RPM 5800 RPM RBC[c]
2007–2010 Acura CSX Type S 11.0:1 197 hp (147 kW) @ 7800 RPM[b] 139 lb⋅ft (188 N⋅m) @ 6200 RPM[b] 8000 RPM 8300 RPM 5800 RPM
K20Z4 2007–2010 Honda Civic Type R (EDM) 11.0:1 201 hp (150 kW) @ 7800 RPM 142 lb⋅ft (193 N⋅m) @ 6800 RPM 8000 RPM 8200 RPM 5400 RPM RSP
K20Z5 2007–2010 Honda Civic Si (BDM) 11.0:1 192 hp (143 kW) @ 7800 RPM 136 lb⋅ft (184 N⋅m) @ 6800 RPM 8000 RPM 8200 RPM 5400 RPM
  1. ^ SAE BHP measurement changes from 2005 to 2006. Thus, reducing the 2006 Acura RSX Type S rating from 210 hp (160 kW) to 201 hp (150 kW) on paper.
  2. ^ a b c d SAE net Rev 8/04
  3. ^ The RBC is not a variable-length intake.
Additional notes

K20Z3 (as fitted to Ariel's Atom 3.5)

  • The K20Z3 has Honda's traditional performance VTEC on the intake and the exhaust cams, as found on previous generation of engines. Variable cam timing technology is included on the intake but not the exhaust cams. The added timing control corresponds to the "i" in i-VTEC.

K20C (Earth Dreams VTEC Turbo)

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K20C (Earth Dreams VTEC Turbo)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2015–present
Layout
ConfigurationI4
Displacement2.0 L; 121.8 cu in (1,996 cc)
Cylinder bore86 mm (3.386 in)
Piston stroke85.9 mm (3.382 in)
Cylinder block materialAluminium
Cylinder head materialAluminium
ValvetrainDOHC 4 valves x cyl w/ VTEC/i-VTEC
Compression ratioSee left for specific application.
Combustion
TurbochargerSingle
Fuel systemDirect fuel injection
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power outputSee left for specific application.
Torque outputSee left for specific application.
Applications
Engine Application Compression Power Torque Redline Rev limiter i-VTEC
engagement
K20C1 2015–2017 Honda Civic Type R (EDM)
2017–2021 Honda Civic Type R (USDM)
2023–present Honda Civic Type R (USDM)
2024–present Acura Integra Type S (K20C8) 		9.8:1 306–320 hp (228–239 kW) @ 6500 RPM 295–310 lb⋅ft (400–420 N⋅m) @ 2500-4000 RPM 7000 RPM 7000 RPM
K20C3 2016–present Honda Avancier/UR-V (China) 9.8:1 268 hp (200 kW) @ 6500 RPM 273 lb⋅ft (370 N⋅m) @ 4200 RPM 6100 RPM
K20C4 2018–2022 Honda Accord

(Sport, EX-L & Touring 2.0T trims)

9.8:1 252 hp (188 kW) @ 6500 RPM 273 lb⋅ft (370 N⋅m) @ 1500-4000 RPM 6800 RPM
2019–present Acura RDX
 9.8:1 272 hp (203 kW) @ 6500 RPM 280 lb⋅ft (380 N⋅m) @ 1600-4500 RPM 6800 RPM
K20C5 2019–present Acura RDX (China) 9.8:1 265 hp (195 kW) @ 6500 RPM 280 lb⋅ft (380 N⋅m) @ 3000-4000 RPM 6800 RPM
K20C6 2021–present Acura TLX 9.8:1 272 hp (203 kW) @ 6500 RPM 280 lb-ft (380 N-m) @ 1600-4500 RPM 6800 RPM
Additional notes
  • Earth Dreams Technology
  • K20C1: First Honda Type R engine to be built in the US at the Honda Anna Engine Plant in Anna, Ohio. First time Honda has used a turbocharger on the TYPE R.
  • K20C5: All Acura RDX sold in China (manufactured by GAC Acura)
  • Although the K20C4 in the Acura RDX and the K20C6 in the Acura TLX share the same internals, they are named differently due to different engine mount points to accommodate the sedan body of the TLX.
  • The VTEC mechanism is available only on the exhaust valves.
  • K20C1 engines have an offset of 8mm on the crankshaft from the centerline of the bore.[13]
  • K20C8 (Acura Integra Type S): Engine is identical to the K20C1, it is named differently to accommodate different mounting points.

K20C & K20Z (Earth Dreams i-VTEC)

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K20C & K20Z
(Earth Dreams i-VTEC)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2016–present
Layout
ConfigurationI4
Displacement2.0 L; 121.8 cu in (1,996 cc)
Cylinder bore86 mm (3.386 in)
Piston stroke85.9 mm (3.382 in)
Cylinder block materialAluminium
Cylinder head materialAluminium
ValvetrainDOHC 4 valves x cyl w/ i-VTEC
Compression ratioSee left for specific application.
Combustion
Fuel systemPort Injection (Multi-point Injection)
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power outputSee left for specific application.
Torque outputSee left for specific application.
Applications
Engine Application Compression Power Torque Redline Rev limiter i-VTEC
engagement
K20C2 2016–2018 Honda Civic (LX & EX) Sedan (USDM)

2019–present Honda Civic (LX & Sport) Sedan (USDM)

2016–2020 Honda Civic (LX, LX-P, Sport) Coupe (USDM)

2022–2024 Honda Civic (LX, Sport) Hatchback (USDM)

10.8:1 158 hp (118 kW) @ 6500 RPM 138 lb⋅ft (187 N⋅m) @ 4200 RPM 6700 RPM[14] 7000 RPM 6100 RPM (Manual)
6500 RPM (CVT)
2016–2023 Formula 4 United States Championship 10.8:1 158 hp (118 kW) @ 6500 RPM 138 lb⋅ft (187 N⋅m) @ 4200 RPM 6800 RPM 7000 RPM 6100 RPM
K20Z5 2023–present Honda HR-V (USDM)[15] 10.8:1 158 hp (118 kW) @ 6500 RPM 138 lb⋅ft (187 N⋅m) @ 4200 RPM 6800 RPM[16]

K23

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K23A (i-VTEC Turbo)

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Honda K23A (i-VTEC Turbo)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2007–2012
Layout
ConfigurationI4
Displacement2.3 L; 140.4 cu in (2,300 cc)
Cylinder bore86 mm (3.386 in)
Piston stroke99 mm (3.898 in)
Cylinder block materialAluminium
Cylinder head materialAluminium
ValvetrainDOHC 4 Valves x Cyl w/ i-VTEC
Compression ratio8.8:1
Combustion
Turbocharger1
Fuel systemFuel injection
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power output240 hp (180 kW) @ 6000 RPM
Torque output260 lb⋅ft (350 N⋅m) @ 4500 RPM
Applications
Engine Application Compression Power Torque Redline Rev limiter i-VTEC
engagement 		Intake
Manifold
K23A1 2007–2012 Acura RDX 8.8:1 240 hp (180 kW) @ 6000 RPM 260 lb⋅ft (350 N⋅m) @ 4500 RPM 6800 RPM 6900 RPM 2500 RPM
Additional notes
  • This version of the K engine uses a Mitsubishi TD04HL-15T turbocharger with a dual path turbine housing, optimizing low end response while allowing better high end flow. Maximum boost pressure is 13.5psi. The engine includes i-VTEC and VTC technologies and comes mated to a version of Honda's 5-speed automatic with SH-AWD (note: SH-AWD was standard from 2007-2009 and optional from 2010-2012).

K24

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K24A (i-VTEC)

[edit]
Honda K24A (i-VTEC)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2001–2016
Layout
ConfigurationI4
Displacement2.4 L; 143.6 cu in (2,354 cc)
Cylinder bore87 mm (3.425 in)
Piston stroke99 mm (3.898 in)
ValvetrainDOHC 4 Valves x Cyl w/ i-VTEC
Compression ratioSee left for specific application.
Combustion
Fuel systemFuel injection
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power outputSee left for specific application.
Torque outputSee left for specific application.
Engine Application Compression Power Torque Redline Rev limiter i-VTEC
engagement 		Intake
Manifold
K24A
 2002–2008 Honda Accord 24T, 24TL, 24S and Type-S (JDM) (CL9/CM2, FWD)[8] 10.5:1 197 hp; 147 kW @ 6800 rpm 171 lb⋅ft (232 N⋅m) @ 4500 rpm 7100 rpm[a] 7200 rpm 6000 rpm RBB
2002–2008 Honda Accord 24T (JDM) (CM3, AWD)[8] 10.5:1 187 hp; 140 kW @ 6800 rpm 168 lb⋅ft (228 N⋅m) @ 4500 rpm 7100 rpm[a] 7200 rpm 6000 rpm RBB
2008–2013 Honda Accord 24E, 24IL, 24TL and Type-S (JDM) (CU2/CW2, FWD)[17] 11:1 203 hp; 152 kW @ 7000 rpm 171 lb⋅ft (232 N⋅m) @ 4300 rpm 5000 rpm R40
2003–2008 Honda Odyssey Absolute (JDM) (RB1, FWD)[18] 10.5:1 197 hp; 147 kW @ 6800 rpm 171 lb⋅ft (232 N⋅m) @ 4500 rpm 7100 rpm[a] 7200 rpm 6000 rpm RBB
2003–2008 Honda Odyssey Absolute (JDM) (RB2, AWD) 10.5:1 187 hp; 140 kW @ 6800 rpm 168 lb⋅ft (228 N⋅m) @ 4500 rpm 7100 rpm[a] 7200 rpm 6000 rpm RBB
2008–2013 Honda Odyssey Absolute (JDM) (RB3, FWD)[19] 11:1 203 hp; 152 kW @ 7000 rpm 171 lb⋅ft (232 N⋅m) @ 4300 rpm 5000 rpm R40
2008–2013 Honda Odyssey Absolute (JDM) (RB4, AWD) 11:1 201 hp; 150 kW @ 7000 rpm 170 lb⋅ft (230 N⋅m) @ 4300 rpm R40
K24A 2003–2005 Honda Element (JDM)[20] 9.7:1 158 hp; 118 kW @ 5500 rpm 161 lb⋅ft (218 N⋅m) @ 4500 rpm PZD
2003–2008 Honda Odyssey (JDM) 9.7:1 158 hp; 118 kW @ 5500 rpm 161 lb⋅ft (218 N⋅m) @ 4500 rpm RAA
2008–2013 Honda Odyssey (JDM) 10:1 171 hp; 127 kW @ 6000 rpm 164 lb⋅ft (222 N⋅m) @ 4300 rpm RAA
2003–2005 Honda Stepwgn Spada 24T (JDM)[6] 9.6:1 160 hp; 119 kW @ 6000 rpm 160 lb⋅ft (220 N⋅m) @ 3600 rpm
2004–2013 Honda Elysion (JDM)[21] 9.7:1 158 hp; 118 kW @ 5500 rpm 161 lb⋅ft (218 N⋅m) @ 4500 rpm
2006–2009 Honda Edix 24S (JDM)[22] 9.7:1 160 hp; 119 kW @ 5700 rpm 161 lb⋅ft (218 N⋅m) @ 4000 rpm
2005–2006 Honda CR-V (JDM)[23] 9.6:1 158 hp; 118 kW @ 6000 rpm 160 lb⋅ft (220 N⋅m) @ 3600 rpm 6500 rpm 7000 rpm PPA
2006–2011 Honda CR-V (JDM)[24] 9.7:1 168 hp; 125 kW @ 5800 rpm 160 lb⋅ft (220 N⋅m) @ 4200 rpm
2011–2016 Honda CR-V (JDM)[25] 10:1 187 hp; 140 kW @ 7000 rpm 164 lb⋅ft (222 N⋅m) @ 4400 rpm
K24A1 2002–2006 Honda CR-V 9.6:1 160 hp (119 kW) @ 6000 rpm 162 lb⋅ft (220 N⋅m) @ 3600 rpm 6500 rpm 7000 rpm 2750 rpm PPA
K24A2 2004–2005 Acura TSX 10.5:1 197 hp; 147 kW @ 6800 rpm 166 lb⋅ft (225 N⋅m) @ 4500 rpm 7100 rpm 7200 rpm 6000 rpm RBB
2006–2008 Acura TSX[26] 10.5:1 205 hp (153 kW) @ 7000 rpm 164 lb⋅ft (222 N⋅m) @ 4500 rpm 7100 rpm 7200 rpm 6000 rpm RBB
K24A3 2003–2007 Honda Accord (EDM) 10.5:1 190 PS (140 kW; 190 hp) @ 6800 rpm 171 lb⋅ft (232 N⋅m) @ 4500 rpm 7200 rpm 7300 rpm 6000 rpm RBB
2003–2007 Honda Accord Euro (AUDM/NZDM) 10.5:1 190 PS (140 kW; 190 hp) @ 6800 rpm 171 lb⋅ft (232 N⋅m) @ 4500 rpm 7200 rpm 7300 rpm 6000 rpm RBB
K24A4 2003–2005 Honda Accord (USDM) 9.7:1 160 hp (119 kW) @ 5500 rpm 161 lb⋅ft (218 N⋅m) @ 4500 rpm 6800 rpm 3500rpm RAA
2003–2008 Honda Odyssey 9.7:1 160 hp (119 kW) @ 5500 rpm 161 lb⋅ft (218 N⋅m) @ 4500 rpm 6800 rpm RAA
2003–2006 Honda Element 9.7:1 160 hp (119 kW) @ 5500 rpm 161 lb⋅ft (218 N⋅m) @ 4500 rpm 6800 rpm PZD
K24A8 2006–2007 Honda Accord (USDM) 9.7:1 166 hp (124 kW) @ 5800 rpm 160 lb⋅ft (217 N⋅m) @ 4000 rpm 6500 rpm 2400/4500 rpm[b] RAA
2007–2011 Honda Element 9.7:1 166 hp (124 kW) @ 5800 rpm 161 lb⋅ft (218 N⋅m) @ 4000 rpm 6800 rpm 2400/4500 rpm[b] PZD
2008–2014 Honda Odyssey (JDM) 10.5:1 178 hp (133 kW) 161 lb⋅ft (218 N⋅m)
  1. ^ a b c d
    Automatic: 7100 rpm
    Sequential Sportshift: 7300 rpm
    Manual: 7600 rpm
  2. ^ a b 2400 rpm While in fuel efficiency mode. 4500 rpm in performance mode.
Additional notes

K24A2 and K24A3 (2006-2008 Acura TSX)[26]

  • Increased intake flow:
    • Intake valve + 1 mm oversize (Intake valve head measures 36mm, but valve seat still measures 35mm)
    • 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
  • Others
    • Stronger connecting rods
    • Under-piston oil squirters

K24Z & K24Y (i-VTEC)

[edit]
Honda K24Z & K24Y (i-VTEC)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2007–2015
Layout
ConfigurationI4
Displacement2.4 L; 143.6 cu in (2,354 cc)
Cylinder bore87 mm (3.425 in)
Piston stroke99 mm (3.898 in)
ValvetrainDOHC 4 valves x cyl w/ i-VTEC
Compression ratioSee left for specific application.
Combustion
Fuel systemFuel injection
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power outputSee left for specific application.
Torque outputSee left for specific application.
Applications
Engine Application Compression Power Torque Redline Rev limiter i-VTEC
engagement 		Intake
Manifold
K24Z1 2007–2009 Honda CR-V (RE3, RE4) 9.7:1 166 hp (124 kW) @ 5800 RPM 161 lb⋅ft (218 N⋅m) @ 4200 RPM 6500 RPM
K24Z2 2008–2012 Honda Accord LX/LX-P (USDM/CDM) 10.5:1 177 hp (132 kW) @ 6500 RPM 161 lb⋅ft (218 N⋅m) @ 4300 RPM 6800 RPM 7100 RPM 5100 RPM
2016–2020 Proton Perdana 10.5:1 177 hp (132 kW) @ 6500 RPM 161 lb⋅ft (218 N⋅m) @ 4300 RPM 6800 RPM 7100 RPM
K24Z3 2008–2012 Honda Accord LX-S/EX/EX-L (USDM/CDM) 10.5:1[27] 190 hp (142 kW) @ 7000 RPM 162 lb⋅ft (220 N⋅m) @ 4400 RPM 7100 RPM 5100 RPM
2009–2014 Acura TSX and Honda Accord (Europe)[28] (CU2/CW2) 11.0:1 201 hp (150 kW) @ 7000 RPM 172 lb⋅ft (233 N⋅m) @ 4300 RPM 7100 RPM 5100 RPM
K24Z4 2008–2012 Honda CR-V (RE7) 9.7:1 161 hp (120 kW) @ 5800 RPM 161 lb⋅ft (218 N⋅m) @ 4200 RPM 6500 RPM
K24Z5 2010–2015 Honda Spirior 10.5:1 184 hp (137 kW) @ 6500 RPM 164 lb⋅ft (222 N⋅m) @ 4300 RPM 6500 RPM
K24Z6 2010–2011 Honda CR-V (USDM/CDM) 10.5:1 180 hp (134 kW) @ 6800 RPM 161 lb⋅ft (218 N⋅m) @ 4400 RPM 7100 RPM 7200 RPM
K24Z7 2012–2013 Honda Civic Si 11.0:1 201 hp (150 kW) @ 7000 RPM 170 lb⋅ft (230 N⋅m) @ 4400 RPM 7000 RPM 7200 RPM 5200 RPM
2014–2015 Honda Civic Si 11.0:1 205 hp (153 kW) @ 7000 RPM 174 lb⋅ft (236 N⋅m) @ 4400 RPM 7000 RPM 7500 RPM 5000 RPM
2013–2015 Acura ILX 11.0:1 201 hp (150 kW) @ 7000 RPM 170 lb⋅ft (230 N⋅m) @ 4400 RPM 7100 RPM 7200 RPM
2012–2014 Honda CR-V (USDM/CDM) 10.0:1 185 hp (138 kW) @ 7000 RPM 163 lb⋅ft (221 N⋅m) @ 4400 RPM 7000 RPM 7200 RPM 5000 RPM
K24Y1 2012–2014 Honda CR-V (Thailand) 10.5:1 170 hp (127 kW) @ 6000 RPM 162 lbf⋅ft (220 N⋅m) @ 4300 RPM 6500 RPM
K24Y2 2012–2015 Honda Crosstour 10.0:1 192 hp (143 kW) @ 7000 RPM 162 lb⋅ft (220 N⋅m) @ 4400 RPM 7100 RPM

K24W & K24V (Earth Dreams i-VTEC)

[edit]
Further information: Earth Dreams Technology
Honda K24W & K24V (Earth Dreams i-VTEC)
Overview
ManufacturerHonda Motor Co., Ltd.
Production2013–present
Layout
ConfigurationI4
Displacement2.4 L; 143.8 cu in (2,356 cc)
Cylinder bore87 mm (3.425 in)
Piston stroke99 mm (3.898 in)
ValvetrainDOHC 4 valves x cyl w/ i-VTEC
Compression ratioSee left for specific application.
Combustion
Fuel systemSee left for specific application.
ManagementECU
Fuel typeGasoline
Cooling systemWater-cooled
Output
Power outputSee left for specific application.
Torque outputSee left for specific application.
Dimensions
Length30cm

Direct Injection, i-VTEC (intake camshaft & valvetrain)

Applications
Engine Application Compression Fuel Injection Power Torque Redline i-VTEC
engagement 		Intake
Manifold
K24W 2013–present Honda Odyssey (JDM)[29] 11.1:1 Multi Point 185 hp (138 kW) @ 6400 RPM 173 lb⋅ft (235 N⋅m) @ 4000 RPM 6800 RPM 4800 RPM
K24W1 2013–2017 Honda Accord (USDM)[30] 11.1:1 Direct 185 hp (138 kW) @ 6400 RPM 181 lb⋅ft (245 N⋅m) @ 3900 RPM 6800 RPM 4800 RPM
K24W4 2013–2018 Honda Accord (Thailand/Malaysia) 10.1:1 Multi Point 174 hp (130 kW) @ 6200 RPM 166 lb⋅ft (225 N⋅m) @ 4000 RPM 6500 RPM
2013–present Honda Odyssey (International model excl. Japan) 10.1:1 174 hp (130 kW) @ 6200 RPM 166 lb⋅ft (225 N⋅m) @ 4000 RPM 6500 RPM
K24W7 2015–2020 Acura TLX 11.6:1 Direct 206 hp (154 kW) @ 6800 RPM 182 lb⋅ft (247 N⋅m) @ 3900 RPM 7000 RPM 5000 RPM +/-100 RPM
2015–2018 Honda Spirior Si 11.6:1 202 hp (151 kW) @ 6800 RPM 182 lb⋅ft (247 N⋅m) @ 3900 RPM 7000 RPM 5000 RPM +/-100 RPM
K24W9 2015–2019 Honda CR-V[broken anchor] (USDM)[31] 11.1:1 Direct 185 hp (138 kW) @ 6400 RPM 181 lb⋅ft (245 N⋅m) @ 3900 RPM 6800 RPM 4800 RPM
K24V5 2015–2016 Honda CR-V (Thailand) 10.1:1 Multi Point 174 hp (130 kW) @ 6200 RPM 166 lb⋅ft (225 N⋅m) @ 4000 RPM 6500 RPM
2017–2022 Honda CR-V (Thailand)[32][33] 10.1:1 170 hp (130 kW) @ 6200 RPM 165 lb⋅ft (224 N⋅m) @ 4000 RPM 6500 RPM
K24V7 2016–2022 Acura ILX[34][35] 11.6:1 Direct 201 hp (150 kW) @ 6800 RPM 180 lb⋅ft (240 N⋅m) @ 3800 RPM 7000 RPM 5000 RPM +/-100 RPM

Please note: The K24W1 in the 2013-2017 Honda Accord had a raised power output of 189 hp and 182 lb•ft in the Sport Trim due to a different exhaust setup.

Legacy

[edit]

The Honda K-series engines have built a significant legacy, widely regarded as some of the most influential and celebrated four-cylinder engines in automotive history. The engine’s reliability and performance, coupled with its lightweight aluminium construction and chain-driven timing system, solidified its reputation as a benchmark in engine design. This engineering excellence made the K-series a revered engine amongst people, setting a new standard for four-cylinder engines. As a result, it gained widespread praise for being durable and tuneable, quickly becoming a favourite among car enthusiasts and professional tuners alike due to its potential to handle both everyday driving and high-performance applications.[36]

The K-series engine’s impact extends beyond factory specifications, with its wide adoption in the aftermarket scene. The K20 and K24 variants, in particular, are often used in engine swaps and high-performance builds due to their ability to handle and withstand significant power upgrades. This adaptability, coupled with their success in motorsports like time attack and drag racing, cemented the K-series as one of the greatest four-cylinder engines of all time.[37]

The engine remains a benchmark from its long production run to this day, continuing to influence modern engine design and tuning practices.

References

[edit]
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  8. ^ a b c d "Honda｜アコード（2008年11月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 22 June 2016. Retrieved 30 March 2021.
  9. ^ "Honda｜エディックス（2005年11月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 1 July 2016. Retrieved 30 March 2021.
  10. ^ "Honda｜シビック（2007年8月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 18 May 2017. Retrieved 30 March 2021.
  11. ^ "Technical Information RSX VTEC and VTC". Hondata. Archived from the original on 12 May 2018. Retrieved 21 April 2018.
  12. ^ "Honda K20A 2.0l DOHC i-VTEC SPEC R Engine for the new FD2 CIVIC TYPE R". Asia.vtec.net. Archived from the original on 6 February 2017. Retrieved 15 October 2018.
  13. ^ "Civic Type R K20C1 Engine". Engine Builder Mag. Retrieved 23 June 2023.
  14. ^ "Vehicle Specifications - 2018 Honda Civic Sedan - Honda Owners Site". Owners.honda.com. Archived from the original on 5 November 2018. Retrieved 15 October 2018.
  15. ^ "The 2023 HR-V has shown up at a few dealers already. What we know so far". Temple of VTEC. 6 June 2022. Retrieved 26 June 2022.
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  18. ^ "Honda｜オデッセイ（2007年1月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 28 July 2016. Retrieved 30 March 2021.
  19. ^ "Honda│オデッセイ（2013年9月終了モデル）│スペック". www.honda.co.jp. Archived from the original on 7 July 2018. Retrieved 30 March 2021.
  20. ^ "Honda｜エレメント（2005年5月終了モデル）". www.honda.co.jp. Archived from the original on 12 June 2017. Retrieved 30 March 2021.
  21. ^ "Honda｜エリシオン（2005年8月終了モデル）". www.honda.co.jp. Archived from the original on 13 July 2018. Retrieved 30 March 2021.
  22. ^ "Honda｜エディックス（2009年8月終了モデル）│Webカタログ│スペック（諸元表）". www.honda.co.jp. Archived from the original on 13 November 2017. Retrieved 30 March 2021.
  23. ^ "Honda｜CR-V（2006年9月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 23 April 2021. Retrieved 30 March 2021.
  24. ^ "Honda｜CR-V（2007年8月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 23 April 2021. Retrieved 30 March 2021.
  25. ^ "性能 | CR-V（2016年8月終了モデル） | Honda". www.honda.co.jp. Archived from the original on 29 July 2019. Retrieved 30 March 2021.
  26. ^ a b "2008 Acura TSX - Powertrain". acuranews.com. Archived from the original on 15 October 2018. Retrieved 15 October 2018.
  27. ^ "2012 Honda Accord Specifications and Features". Honda Automobiles Newsroom. 17 August 2011. Archived from the original on 23 April 2021. Retrieved 3 October 2020.
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  29. ^ "Odyssey Specification List" (PDF). Honda (in Japanese). Retrieved 9 June 2023.
  30. ^ "2016 Honda ACCORD (2.4L 4 -cyl Engine Code K24W1 7) Motor Oil, Filters and Lubricants - AMSOIL". Retrieved 9 June 2023.
  31. ^ "2019 Honda CR-V (2.4L 4 -cyl Engine Code K24W9 K) Motor Oil, Filters and Lubricants - AMSOIL". Retrieved 9 June 2023.
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  34. ^ "Acura Set to Launch More Powerful, Technologically Advanced and Luxuriously Equipped 2016 Acura ILX Sport Sedan" (Press release). Los Angeles, CA: Acura. 20 November 2014. Archived from the original on 27 September 2020. Retrieved 23 May 2016.
  35. ^ "2017 ILX Specifications & Features". Acura. 12 April 2016. Archived from the original on 27 September 2020. Retrieved 23 May 2016.
  36. ^ Team, The Drifted (29 March 2024). "Ultimate Honda K24 Guide – Everything You Need To Know". Drifted.com. Retrieved 11 September 2024.
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[edit]
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