Honda K engine

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

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

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[edit]

Found In 2001- 2005 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: 220ps at 8000rpm Torque: 206nm

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 iVtec engagement: 5800rpm Horsepower: 225ps Torque: 215nm Intake Manifold: RRC Details for FD2 type r http://asia.vtec.net/Engines/FD2K20AR/


K20A1[edit]

K20A2[edit]

K20A3[edit]

K20A4[edit]

K20A6[edit]

K20Z1[edit]

K20Z2[edit]

K20Z3[edit]

This inline-4-cylinder internal combustion engine is found in the US market Honda Civic Si (2006-2011) & 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.

K20Z4[edit]

K23[edit]

K23A1[edit]

K24[edit]

K24A4

K24A1[edit]

K24A2[edit]

K24A3[edit]

K24A4[edit]

K24A8[edit]

K24Z1[edit]

K24Z2[edit]

K24Z3[edit]

K24Z4[edit]

K24Z5[edit]

K24Z6[edit]

K24Z7[edit]

K24Y1[edit]

7000rpm

K24Y2[edit]

K24W1(Earth Dreams)[edit]

K24W2(Earth Dreams)[edit]

K24W3(Earth Dreams)[edit]

K24W4(Earth Dreams PGM-FI)[edit]

References[edit]

External links[edit]