Honda K engine
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]
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
[edit]K20A (i-VTEC)
[edit]| Honda K20A (i-VTEC) | |
|---|---|
 | |
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2001–2011 |
| Layout | |
| Configuration | I4 |
| Displacement | 2.0 L; 121.9 cu in (1,998 cc) |
| Cylinder bore | 86 mm (3.386 in) |
| Piston stroke | 86 mm (3.386 in) |
| Cylinder head material | NSH 14 |
| Valvetrain | DOHC 4 valves x cyl w/ i-VTEC on some models |
| Compression ratio | See left for specific application. |
| Combustion | |
| Fuel system | Fuel injection |
| Management | ECU |
| Fuel type | Petrol |
| Cooling system |
|
| Output | |
| Power output | See left for specific application. |
| Torque output | See left for specific application. |
| Dimensions | |
| Dry weight | 403 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)
[edit]| Honda K20B (i-VTEC I) | |
|---|---|
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2003–2006 |
| Layout | |
| Configuration | I4 |
| Displacement | 2.0 L; 121.9 cu in (1,998 cc) |
| Cylinder bore | 86 mm (3.386 in) |
| Piston stroke | 86 mm (3.386 in) |
| Valvetrain | DOHC 4 valves x cyl w/ i-VTEC |
| Compression ratio | 10.0:1 |
| Combustion | |
| Fuel system | Direct fuel injection |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | 156 hp (116 kW) @ 6300 rpm |
| Torque output | 139 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)
[edit]| Honda K20Z (i-VTEC) | |
|---|---|
 | |
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2005–2015 |
| Layout | |
| Configuration | I4 |
| Displacement | 2.0 L; 121.9 cu in (1,998 cc) |
| Cylinder bore | 86 mm (3.386 in) |
| Piston stroke | 86 mm (3.386 in) |
| Valvetrain | DOHC 4 valves x cyl w/ i-VTEC on some models |
| Compression ratio | See left for specific application. |
| Combustion | |
| Fuel system | Fuel injection |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | See left for specific application. |
| Torque output | See 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 |
- 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)
[edit]| K20C (Earth Dreams VTEC Turbo) | |
|---|---|
 | |
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2015–present |
| Layout | |
| Configuration | I4 |
| Displacement | 2.0 L; 121.8 cu in (1,996 cc) |
| Cylinder bore | 86 mm (3.386 in) |
| Piston stroke | 85.9 mm (3.382 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves x cyl w/ VTEC/i-VTEC |
| Compression ratio | See left for specific application. |
| Combustion | |
| Turbocharger | Single |
| Fuel system | Direct fuel injection |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | See left for specific application. |
| Torque output | See 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)
[edit]| K20C & K20Z (Earth Dreams i-VTEC) | |
|---|---|
 | |
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2016–present |
| Layout | |
| Configuration | I4 |
| Displacement | 2.0 L; 121.8 cu in (1,996 cc) |
| Cylinder bore | 86 mm (3.386 in) |
| Piston stroke | 85.9 mm (3.382 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 valves x cyl w/ i-VTEC |
| Compression ratio | See left for specific application. |
| Combustion | |
| Fuel system | Port Injection (Multi-point Injection) |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | See left for specific application. |
| Torque output | See 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
[edit]K23A (i-VTEC Turbo)
[edit]| Honda K23A (i-VTEC Turbo) | |
|---|---|
 | |
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2007–2012 |
| Layout | |
| Configuration | I4 |
| Displacement | 2.3 L; 140.4 cu in (2,300 cc) |
| Cylinder bore | 86 mm (3.386 in) |
| Piston stroke | 99 mm (3.898 in) |
| Cylinder block material | Aluminium |
| Cylinder head material | Aluminium |
| Valvetrain | DOHC 4 Valves x Cyl w/ i-VTEC |
| Compression ratio | 8.8:1 |
| Combustion | |
| Turbocharger | 1 |
| Fuel system | Fuel injection |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | 240 hp (180 kW) @ 6000 RPM |
| Torque output | 260 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
[edit]K24A (i-VTEC)
[edit]| Honda K24A (i-VTEC) | |
|---|---|
 | |
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2001–2016 |
| Layout | |
| Configuration | I4 |
| Displacement | 2.4 L; 143.6 cu in (2,354 cc) |
| Cylinder bore | 87 mm (3.425 in) |
| Piston stroke | 99 mm (3.898 in) |
| Valvetrain | DOHC 4 Valves x Cyl w/ i-VTEC |
| Compression ratio | See left for specific application. |
| Combustion | |
| Fuel system | Fuel injection |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | See left for specific application. |
| Torque output | See left for specific application. |
| Engine | Application | Compression | Power | Torque | Redline | Rev limiter | i-VTEC engagement |
Intake Manifold |
|---|---|---|---|---|---|---|---|---|
| K24A (High Performance) |
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 (Eco) | 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) |
- 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
- Increased intake flow:
K24Z & K24Y (i-VTEC)
[edit]| Honda K24Z & K24Y (i-VTEC) | |
|---|---|
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2007–2015 |
| Layout | |
| Configuration | I4 |
| Displacement | 2.4 L; 143.6 cu in (2,354 cc) |
| Cylinder bore | 87 mm (3.425 in) |
| Piston stroke | 99 mm (3.898 in) |
| Valvetrain | DOHC 4 valves x cyl w/ i-VTEC |
| Compression ratio | See left for specific application. |
| Combustion | |
| Fuel system | Fuel injection |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | See left for specific application. |
| Torque output | See 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]| Honda K24W & K24V (Earth Dreams i-VTEC) | |
|---|---|
 | |
| Overview | |
| Manufacturer | Honda Motor Co., Ltd. |
| Production | 2013–present |
| Layout | |
| Configuration | I4 |
| Displacement | 2.4 L; 143.8 cu in (2,356 cc) |
| Cylinder bore | 87 mm (3.425 in) |
| Piston stroke | 99 mm (3.898 in) |
| Valvetrain | DOHC 4 valves x cyl w/ i-VTEC |
| Compression ratio | See left for specific application. |
| Combustion | |
| Fuel system | See left for specific application. |
| Management | ECU |
| Fuel type | Gasoline |
| Cooling system | Water-cooled |
| Output | |
| Power output | See left for specific application. |
| Torque output | See left for specific application. |
| Dimensions | |
| Length | 30cm |
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 |
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]- ^ "Honda K-Series Engines". JDM Spec Engines. Archived from the original on 13 March 2014. Retrieved 20 May 2014.
{{cite web}}: CS1 maint: unfit URL (link) - ^ "Civic Type R K20C1 Engine". Engine Builder Mag. Retrieved 23 June 2023.
- ^ "Honda｜ストリーム（2005年12月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 24 September 2016. Retrieved 30 March 2021.
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- ^ "Honda｜ステップワゴン（2005年4月終了モデル）". www.honda.co.jp. Archived from the original on 21 June 2016. Retrieved 30 March 2021.
- ^ a b "Honda｜ステップワゴン スパーダ（2005年4月終了モデル）". www.honda.co.jp. Archived from the original on 23 September 2017. Retrieved 30 March 2021.
- ^ "Honda｜ステップ ワゴン（2006年4月終了モデル）｜スペック". www.honda.co.jp. Archived from the original on 27 December 2014. Retrieved 30 March 2021.
- ^ 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.
- ^ "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.
- ^ "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.
- ^ "Technical Information RSX VTEC and VTC". Hondata. Archived from the original on 12 May 2018. Retrieved 21 April 2018.
- ^ "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.
- ^ "Civic Type R K20C1 Engine". Engine Builder Mag. Retrieved 23 June 2023.
- ^ "Vehicle Specifications - 2018 Honda Civic Sedan - Honda Owners Site". Owners.honda.com. Archived from the original on 5 November 2018. Retrieved 15 October 2018.
- ^ "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.
- ^ "2023 Honda HR-V Specifications & Features". American Honda Motor Co., Inc. 7 June 2022. Retrieved 26 June 2022.
- ^ "Honda│アコード（2013年3月終了モデル）│スペック". www.honda.co.jp. Archived from the original on 13 September 2016. Retrieved 30 March 2021.
- ^ "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.
- ^ "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.
- ^ "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.
- ^ "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.
- ^ "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.
- ^ "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.
- ^ "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.
- ^ "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.
- ^ a b "2008 Acura TSX - Powertrain". acuranews.com. Archived from the original on 15 October 2018. Retrieved 15 October 2018.
- ^ "2012 Honda Accord Specifications and Features". Honda Automobiles Newsroom. 17 August 2011. Archived from the original on 23 April 2021. Retrieved 3 October 2020.
- ^ "2009 Acura TSX - Powertrain" (Press release). Torrance, CA: Acura. 20 April 2008. Retrieved 1 September 2015.
- ^ "Odyssey Specification List" (PDF). Honda (in Japanese). Retrieved 9 June 2023.
- ^ "2016 Honda ACCORD (2.4L 4 -cyl Engine Code K24W1 7) Motor Oil, Filters and Lubricants - AMSOIL". Retrieved 9 June 2023.
- ^ "2019 Honda CR-V (2.4L 4 -cyl Engine Code K24W9 K) Motor Oil, Filters and Lubricants - AMSOIL". Retrieved 9 June 2023.
- ^ "ECO sticker - Honda CR-V 2.4 EL 4WD". ECO sticker - The Office of Industrial Economics, Ministry of Industry Thailand (in Thai). Archived from the original on 27 September 2020. Retrieved 18 January 2020.
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- ^ "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.
- ^ "2017 ILX Specifications & Features". Acura. 12 April 2016. Archived from the original on 27 September 2020. Retrieved 23 May 2016.
- ^ Team, The Drifted (29 March 2024). "Ultimate Honda K24 Guide – Everything You Need To Know". Drifted.com. Retrieved 11 September 2024.
- ^ "The Bulletproof Honda K-Series: A Legacy of Reliability and Performanc". Authentic Autoclub. Retrieved 11 September 2024.
External links
[edit]- Honda engine pages: i-VTEC DOHC, 2.0L DOHC i-VTEC
- K Series VTEC Breakdown: K Series VTEC Breakdown
