K20 Engine

Honda K20 Engine

Honda K20 engine replaces the B20 and F20 engines in 2001 and became the first in the new series of K (K20, K23, K24) Honda engine. K20 is an inline four-cylinder engine with timing chain (chain life is pretty decent and, on average, more than 200,000 km), some versions are equipped with two balancing shafts. Variable intake manifold geometry, cylinder head-shaft the DOHC, with intelligent variable valve timing system, i-VTEC (for common / civil engines, the system is simple and serves to increase efficiency), without the lifters, adjustment of valves on the K20 is made, every, if necessary 40.000 km. Valve clearances inlet: 0.21-0.25, issue: 0.28-0.32.

Despite the common name, the engine modifications are very and very different from the civilian 150 strong, to sport high rpm motors with capacity of 220 hp. Since 2007 K20 engine is replaced by the new R20 engine.

Honda Civic Type R Engine Sound

 

K20 Engine specs

Honda K-Series Engine Specs K20A K20A2
Displacement (cu in / cc): 121.9 / 1998 121.9 / 1998
K20 engine Horsepower: 221 hp @ 8000 RPM 200 hp @ 7400 RPM
Torque: 159 lb-ft @ 6100 RPM 142 lb-ft @ 6000 RPM
Bore and Stroke (in / mm): 3.386 x 3.386 / 86 x 86 3.386 x 3.386 / 86 x 86
Compression Ratio: 11.7.1 11.0:1
Block Material: Aluminum with Cast Iron Cylinder Sleeves Aluminum with Cast Iron Cylinder Sleeves
Cylinder Head Material: Aluminum Aluminum
Ignition System: Coil-on-Plug, Distributorless Ignition System Coil-on-Plug, Distributorless Ignition System
Valvetrain: i-VTEC, DOHC, 4 Valves per Cylinder i-VTEC, DOHC, 4 Valves per Cylinder
K20 engine weight, kg 150

honda-k20a-engine

This engine is also installed in

  • Honda Accord
  • Honda Civic
  • Honda CRV
  • Honda Integra
  • Honda Stepwgn
  • Honda Stream
  • Acura CSX
  • Acura Integra
  • Acura RSX

Honda K20 Engine modifications

Engine Application Compression Power Torque Rev limiter i-VTEC
engagement
K20A 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
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 6000 RPM
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
2007–2011 Honda Civic Type R (JDM) 11.7.1 221 hp (165 kW) @ 8000 RPM 159 lb·ft (215 N·m) @ 6100 RPM 8600 RPM 5800 RPM
K20A1 2001–2006 Honda Stream(RN3, FWD) 9.7:1 156 hp (116 kW) @ 6500 RPM 139 lb·ft (188 N·m) @ 4000 RPM
2001–2006 Honda Stream(RN4, AWD) 9.8:1 158 hp (118 kW) @ 6500 RPM 140 lb·ft (190 N·m) @ 4000 RPM
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 8250 RPM 5800 RPM
2002–2004 Acura RSX Type S 11.0:1 200 hp (150 kW) @ 7400 RPM 142 lb·ft (193 N·m) @ 6000 RPM 8250 RPM 5800 RPM
2002–2004 Honda Integra Type R (AUDM/NZDM) 11.0:1 200 hp (150 kW) @ 7400 RPM 142 lb·ft (193 N·m) @ 6000 RPM 8100 RPM 5800 RPM
K20A3 2002–2006 Acura RSX 9.8:1 160 hp (120 kW) @ 6500 RPM 141 lb·ft (191 N·m) @ 4000 RPM 2300 RPM
2002–2005 Honda Civic Si 9.8:1 160 hp (120 kW) @ 6500 RPM 132 lb·ft (179 N·m) @ 4000 RPM 2300 RPM
2002–2005 Honda Civic SiR 9.8:1 160 hp (120 kW) @ 6500 RPM 132 lb·ft (179 N·m) @ 4000 RPM 2300 RPM
2002–2005 Honda Civic Type S 9.8:1 160 hp (120 kW) @ 6500 RPM 132 lb·ft (179 N·m) @ 4000 RPM 2300 RPM
K20A4 2002–2006 Honda CR-V(SEA market) 9.8:1 150 hp (110 kW) @ 6500 RPM 140 lb·ft (190 N·m) @ 4000 RPM
2003–2007 Honda Accord 158 hp (118 kW) @ 6500 RPM 140 lb·ft (190 N·m) @ 4000 RPM
2008–2012 Honda Accord Sport 198 hp (148 kW) @ 6500 RPM 170 lb·ft (230 N·m) @ 4000 RPM
K20A6 2003–2006 Honda Accord(EDM) 9.8:1 155 hp (116 kW) @ 6500 RPM 140 lb·ft (190 N·m) @ 4000 RPM 2500 RPM
2003–2006 Honda Accord(ADM) 9.8:1 155 hp (116 kW) @ 6500 RPM 140 lb·ft (190 N·m) @ 4000 RPM 2500 RPM
  1. K20A – sport engine produced since 2001, 215 hp at 8000 rev / min, installed camshafts with the parameters of the inlet 244 (8.84) / 280 (12.65) / 245 (9.68), outlet240 (8.59) / 278 (12.14) / 244 (8.74), double valve springs, compression ratio of 11.5. At this engine balance shafts are used. In 2007, the K20A engine was upgraded: changed the intake manifold, increased throttle up to 64 mm (was 62 mm), modified cylinder head (intake, exhaust), the compression ratio increased to 11.7, including VTEC system shifted by 200 rpm down and she is now starting to operated at 5800 rev / min. Changed and modified exhaust manifold 4-2-1 and production as a whole, the pipe diameter remains the same (54 mm). Power has increased to 220 hp, the moment has increased to 206 Nm at 7000 rev. / Min., To 215 Nm at 6100 vol. / Min. This engine was placed on Japanese Civic Type R FD2.
  2. K20A1 – civil variant of the K20A, replaced the piston at a low compression ratio of 9.8, set quiet camshafts, inlet / outlet channels are smaller, the power of 155 hp – at Honda Stream.
  3. K20A2 – sporty 201-horsepower engine with a different intake manifold, another crankshaft, evil camshafts with inlet parameters 238 (7.36) / 278 (12.42) / 240 (7.82), Outlet 240 (7.14) / 280 (11.12 ) / 242 (7.72), the compression ratio is increased to 11, iVTEC 5800 turns / min. (6000 rev / min. For the Civic Type-R).
  4. K20A3 – civil engine with the compression ratio of 9.8, the power of 160 forces. It occurs on RSX and Civic.
  5. K20A4 / K20A5 / K20A6 – civil engine with the compression ratio of 9.8, the power 150/152/155 hp Differences in VTEC.
  6. K20Z1 – Sport engine versions of Type-S, modified K20A2, changed inlet / outlet, shafts for almost angrier, i-VTEC is included after 5800 rev / min. Power 210 hp
  7. K20Z2 – a simple motor, with the compression ratio 9.6, the power of 155 hp
  8. K20Z3 – sports version, the electronic throttle, modified camshafts, modified inlet / outlet, the degree of compression 11, Power 197 hp I put the engine on Honda Civic Si.
  9. K20Z4 – similar to K20Z3 engine modification, different camshafts, iVTEC switched to 400 rev / min earlier at 5400 rev / min. Power 201 hp – at European Honda Civic Type R.

K20 Engine problems and malfunctions

  1. The engine knocks. Most often, this problem is caused by deterioration of the exhaust camshaft. It is a typical K20 engine disease, nothing unusual. Solution: buy a new cam. Another reason to knock on the motor – not regulated valve.
  2. Oil leaking. A common problem, flowing front oil seal crankshaft. Replacement solves all problems.
  3.  Floating momentum. In most cases, this problem is solved by cleaning commonplace throttle valve and idling.
  4. Vibration of the K20 engine. Check the engine mountings. If the mileage is big probably the timing chain tension problem.

Furthermore, first engines (up to 2003) have problems with local overheating of the cylinder #4. By itself, the engine is good, but loves a good quality gasoline and oil. Under these conditions drives long and reliably. K20A has a resource of about 300 thousand. Km and more.

Honda K20 engine tuning

Atmo. Hybrid

In any case you need to change the head on the Type R, inlet / outlet, brain, and even better to buy a contract Honda K20A engine. K20A can be a little pumped up, put a damper on the FD2, replace the receiver on something like Toda (or other) release of 4-2-1 Toda (or other), ECU Hondata K-Pro, this stuff will raise the capacity to 230 hp, adding to this sport camshafts Skunk2 (or other) Stage 2 level. Skunk2 plates, reinforced springs, injectors 400 cc, can bring up to 250 hp.To get even more power in the atmospheric version, you need to do anything hybrid K20 / K24 or swap K24A2 engine and tuned in a similar manner. motor assembly is carried out based on the K24 unit is placed on the head or K20A K20A2 and refined, pistons Wiseco / CP (or other) 87.5 mm, high compression ratio (12-13), Carillo connecting rods (or other), camshafts Skunk2 Stage 3 level (or the like), reinforced springs, the receiver from Skunk2, Toda, and the like, a large flap 70 mm exhaust 4-2-1 Toda, Walbro 255 fuel pump, fuel injectors from the turbo Acura RDX capacity of 410 cc, the oil pump K20A2, ECU Hondata K-Pro + trivia. Such a configuration issue more than 300 hp naturally aspirated,

To get even more power in the atmospheric version, you need to do hybrid K20 / K24 or swap the K24A2 engine and tuned in a similar manner. motor assembly is carried out based on the K24 unit is placed on the head or K20A K20A2 and refined, pistons Wiseco / CP (or other) 87.5 mm, high compression ratio (12-13), Carillo connecting rods (or other), camshafts Skunk2 Stage 3 level (or the like), reinforced springs, the receiver from Skunk2, Toda, and the like, a large flap 70 mm exhaust 4-2-1 Toda, Walbro 255 fuel pump, fuel injectors from the turbo Acura RDX capacity of 410 cc, the oil pump K20A2, ECU Hondata K-Pro + trivia. Such a configuration issue more than 300 hp naturally aspirated,

Motor assembly is carried out based on the K24 unit. The head of K20A K20A2 is placed and refined, pistons Wiseco / CP (or other) 87.5 mm, high compression ratio (12-13), Carillo connecting rods (or other), camshafts Skunk2 Stage 3 level (or the like), reinforced springs, the receiver from Skunk2, Toda, and the like, a large flap 70 mm exhaust 4-2-1 Toda, Walbro 255 fuel pump, fuel injectors from the turbo Acura RDX capacity of 410 cc, the oil pump K20A2, ECU Hondata K-Pro + trivia. Such a configuration gives more than 300 hp.

K20A Turbo and compressor

For example, a popular compressor kit from Jackson Racing, at a pressure of 0.5 bar, can inflate to 270-290 hp., but we need the Toda inlet / outlet, Valbro 255 pump, the nozzle 410 cc of RDX, ECU Hondata KPro.For more serious boost or turbines need to change connecting rod and piston group on forged, the APR bolts himself kit with intercooler and all necessary on the basis of Garrett’s 30-weave (or easier), ported head, put shafts Stage 2 level, springs, plates, exhaust , tincture. At the

For more serious boost or turbines you need to change connecting rod and piston group on forged, the APR bolts, kit with intercooler and all necessary on the basis of Garrett’s 30-weave (or easier), ported head, put shafts Stage 2 level, springs, plates, exhaust , tincture. At the output we get beyond the 400 power, but the rationality of such decisions is under the big question…

K20A i-VTEC Engine Introduction 2001

 

Honda Civic k20 swap [Full Build] K20 Civic

 

RSX Honda K20 engine build first startup

 

Honda Civic VTi EG9 K20 all motor Having Fun with cops

References

  1. Original article in russian http://wikimotors.ru/k20a/
  2. https://en.wikipedia.org/wiki/Honda_K_engine
  3. http://www.jdmspecengines.com/honda-engines/k-series/k20.html
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