![]() ![]() Application: JDM Honda Civic Type R, Honda Integra Type R, and Honda Accord Euro R. There are a lightweight crankshaft and pistons, a 10.8:1 compression ratio, and a new cylinder head with optimized combustion chambers and i-VTEC. The engine was designed with Honda's Earth Dreams Technology, which employs direct-injection technology and the Atkinson cycle using the DOHC, VTC, and VTEC technologies as the base. The start of production began in 2016 (when the K20Z2 was discontinued), and it's still a relatively new power unit on the market. The K20C2 version is a 2.0-liter naturally aspirated and direct-injected gasoline engine. The detailed information about the latest Honda's 2.0T K20C engines you can find on this page. The K20C family consists of series of 2.0L turbocharged engines (K20C1, K20C3, and K20C4) and one 2.0L naturally aspirated modification (K20C2). This new 2.0-liter engine received modified camshafts and electronic throttle body (Drive by wire technology). In 2006, Honda introduced a replacement for the mass-produced K20A1 engine. The only difference is that it has the RSP intake manifold and i-VTEC engagement at 5,400 rpm. At that moment, Honda's engineers decided what it's not enough and made the K20Z4 for the European market, which is an analog to K20Z3. Variable valve timing technology is applied to the intake side only. It also has traditional performance VTEC cams on the intake and exhaust cams. This engine is slightly modified K20Z1 with different camshafts and an RBC intake manifold. That performance line is continued by the K20Z3 engine from 2007 to almost 2015. The i-VTEC system is engaged at 5,800 rpm. Here you can find the same PRB intake manifold, but a new exhaust manifold, high-performance camshafts, and increased up to 11.0:1 compression ratio. The K20Z1 is a high-rev version of the K20A2 engine. The i-VTEC system is triggered at 5,800 rpm, like on late JDM engines. It was equipped with a PRB intake manifold and different camshafts. On that engine, the i-VTEC kicks at 5,800 rpm. The cylinder head intake and exhaust ports were reshaped and optimized. It got a new exhaust manifold, a short RRC intake manifold, and a 64 mm throttle body. The bottom received new reinforced connecting rods, the compression ratio rose to 11.7:1. In 2007, the K20A engine was revised and upgraded. The i-VTEC engagement starts at 6,000 rpm. The intake was equipped with the 62 mm throttle valve. The cylinder head features head porting made from the factory. It has balancing shafts, high compression pistons (11.5:1), reinforced connecting rods, a lightened flywheel, dual valve springs in the valvetrain, 310 cc fuel injectors, a 4-2-1 exhaust manifold (header), and a PRC intake manifold (or RBC for Euro R). The K20A is a high-performance JDM engine, which was in production from 2001 to 2011. The K20A6 is another version of the K20A3 that was produced for the European and Australian 2003-2006 Honda Accord. The K20A4 is the same K20A3 but tuned for USDM 2003-2007 Honda Accord and 2002-2006 Honda CR-V. ![]() The engine was equipped with 270 cc fuel injectors and a dual runner intake manifold. The purpose of that system is to reduce emissions and improve fuel efficiency. It has VTEC on the intake side and no VTEC mechanism on the exhaust cam. This version can be found in the 2002-2006 Acura RSX and 2002-2005 Honda Civic Si. The compression ratio of the K20A1 is 9.7:1 (9.8:1 is only for AWD applications). All K20s use a coil-on-plug, distributorless, electronically controlled ignition system and modern electronic port fuel injection system. In this case, the valve clearances should be adjusted manually after every 24,000 miles. The valvetrain doesn't have an automatic hydraulic valve clearance control system. Valves are actuated by roller rocker arms. The intake valve's diameter is 35 mm, the exhaust valves - 30 mm. On top, there is a lightweight 16-valve aluminum cylinder head with chain-driven double overhead camshafts (DOHC) and i-VTEC system. The K20 is a square engine, which means it has an equal bore and stroke dimensions (almost 86 mm). This short block has a deck height of 212 mm. The engine had an aluminum cylinder block with cast iron sleeves similar to the B- and F-series engines. The K20 series debuted in the JDM Honda Stream with the K20A1 at the end of 2000. ![]()
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