Sunday, September 7, 2008

Honda's K series engine



1. Introduction

The Honda's K series engine is probably the most innovative and successful engine blueprint ever made to-date. From a NA engine of 1998cc, Honda engineers have leverage on their internal know how of the VTEC system together with a sophisticated ECU, they have horned from 180bhp until 250bhp from these beauties ... needless to say wat Honda has tuned for the bigger K engine blocks fr the 2.3 until the 2.4 blocks


2. Technical Specs - Overview


(Source : Wikipedia)
The Honda K series engine is a four-cylinder otto cycle engine. It is available in 2.0 L and 2.4 L naturally-aspirated variants, and a 2.3 L turbocharged model.

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 eliminates the need for spark plug wires as well as the problems associated with them. It also allows the ECU to precisely control the ignition timing based on various sensor inputs. The cylinders have cast iron sleeves similar to the B-series engines, as opposed to the FRM cylinders found in the H-series.




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






K20A

K20A
Bore is 86 mm & Stroke is 86 mm for all of the K20 engines.
Found in:
2007- Honda Civic Type-R (FD2)
Displacement: 1998 cc
Compression: 11.7:1
Power: 225 bhp (225 PS, 165 kW) @ 8000 rpm
Torque: 158 ft·lbf (215 N·m) @ 7000 rpm
Redline: 8600 rpm
2001-2006 Honda Civic Type-R (EP3)
Displacement: 1998 cc
Compression: 11.5:1
Power: 212 bhp (218 PS, 158 kW) @ 8000 rpm
Torque: 149 ft·lbf (202 N·m) @ 7000 rpm
Redline: 8600 rpm
2001-2007 Honda Integra Type-R (DC5)
Displacement: 1998 cc
Compression: 11.5:1
Power: 217bhp (220 PS, 162 kW) @ 8000 rpm
Torque: 152 ft·lbf (206 N·m) @ 7000 rpm
Redline: 8600 rpm
I-VTEC Engagement: 6200rpm
2003-2007 Honda Accord Euro-R
Displacement: 1998 cc
Compression: 11.5:1
Power: 217 bhp (220 PS, 162 kW) @ 8000 rpm
Torque: 152 f·lbf (206 N·m) @ 7000 rpm
Redline: 8800 rpm

K20A2
Found in:
2002-2004 Acura RSX Type-S and 2002-2005 Honda Civic Type R (EP3, European)
Displacement: 1998 cc
Compression: 11.0:1
Power: 200ps/197hp (147kW) @ 7400rpm
Torque: 142ft·lbf (193N·m) @ 6000rpm
Redline: 7800pm

K20A3
Acura RSX
Displacement: 1998 cc
Compression: 9.8:1
Power: 155hp(115 kW) @ 6500 rpm
Torque: 141 lb·ft (191 N·m)* (191 N·m) @ 4000 rpm
Redline: 6800 rpm
(Horsepower and torque calculations reflect new SAE J1349 procedures revised August 2004)
(The intake manifold is often credited with being responsible for the difference in HP between these two variants. The Civic Si being equipped with an aluminium intake manifold, and the RSX Base model equipped with a plastic version.


K20A4
Found in:
2003-2005 Honda Accord (UC1)
2006-2008 Honda Accord (UC3)
2001-2007 Honda CR-V (RD5)
2000-2003 Honda Stream (RN1)
2004-2007 Honda Stream (RN3)

K20Z1
Found in:
2005-2006 Acura RSX-S
Displacement: 1998 cc
Compression: 11.0:1
Power: 210 hp (154 kW) @ 7800 rpm (SAE net J1349 Rev 8/04)
Torque: 143 ft·lbf (194 N·m) @ 7000 rpm (SAE net J1349 Rev 8/04)
Redline: 8100 rpm

K20Z2
Found in:
2006- Acura CSX (Canada)
Displacement: 1998 cc
Compression: 9.6:1
Power: 155 hp (114 kW) @ 6000 rpm (SAE net J1349 Rev 8/04)
Torque: 139 ft·lbf (188 N·m) @ 4500 rpm / 188 N·m @ 4200 rpm (Singapore)
Redline: 6800 rpm
2006- Honda Civic (JDM)
Displacement: 1998 cc
Compression: 9.6:1
Power: 155 hp (114 kW) @ 6000 rpm
Torque: 139 ft·lbf (188 N·m) @ 4500 rpm
Redline: 6800 rpm
2006- Honda Accord Sport(Europe)
Displacement: 1998 cc
Compression: 9.6:1
Power: 155 hp (114 kW) @ 6000 rpm
Torque: 139 ft·lbf (188 N·m) @ 4500 rpm
Redline: 6800 rpm

K20Z3
This inline-4 cylinder internal combustion engine is found in the US market Honda Civic Si (2006+) & Canadian market Acura CSX Type-S. It has an aluminium block with an aluminium head, and a bore and stroke of 86 mm*86 mm, resulting in a 2.0 Liter displacement.
Found in:
2006-2008 Honda Civic Si (FG2 - Coupe & FA5 - Sedan), 2007 Acura CSX Type-S
Displacement : 1998 cc
Compression : 11.0:1
Power: 197 bhp (147 kW) @ 7800 rpm (sae NET Rev 8/04)
Torque: 139 ft·lbf (189 N·m) @ 6200 rpm (sae NET Rev 8/04)
Redline: 8200 rpm
VTEC Engagement: 5800 RPM

K20Z4
This inline-4 cylinder internal combustion engine is found in the redesigned Honda Civic Type-R (FN2). It has an aluminium block with an aluminium head, and a bore and stroke of 86 mm*86 mm, resulting in a 2.0 Liter displacement.
Found in:
2007 Honda Civic Type-R (FN2) (Europe Market)
Displacement : 1998 cc
Compression : 11.0:1
Power: 197 bhp (201 PS, 148 kW) @ 7800 rpm
Torque: 142 ft·lbf (193 N·m) @ 5600 rpm
Redline: 8200 rpm
16V DOHC I-VTEC changes from low speed cams to high speed cams at 5,400 RPM





1 comment:

AubidadedBallad said...

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