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.

2016年11月12日 · The only thing different from JDM base K20As and USDM K20A3s are the intake cams. The base K20A has a 3 lobe intake cam. USDM K20A3s have only 2 lobe cams. The USDM ECU can be used on the base K20A. It doesn't matter …

The K20A4 is the same K20A3 but tuned for USDM 2003-2007 Honda Accord and 2002-2006 Honda CR-V. The K20A6 is another version of the K20A3 that was produced for the European and Australian 2003-2006 Honda Accord. The K20A is a high-performance JDM engine, which was in production from 2001 to 2011.

Honda K20A3/K24A. A USDM only production engine, the K20A3 and similar cylinder head configurations were developed for a performance, yet economical mindset. Although VTEC, it is only featured on the intake camshaft. The K20A3 is found in the 01-03 Civic Si while the K24A1 is in the 01-03 CR-V.

2010年3月14日 · K20a3-Acura Rsx Base and Civic SI models come in with 9.8:1 compression and 2 liters of displacement. The Base motor is rated at 160hp at 6500rpm and 141lb-ft at 4000 rpm. This motor does not use the conventional VTEC mechanism from the earlier B series motors but does have VTC.

2022年6月9日 · The K20A3 produces peak torque (142 lb-ft) at 4,000 rpm, which is 2,000 rpm lower than the K20A3’s peak torque production (142 lb-ft) at 6,000 rpm. So, while the K20A3 won’t provide the same iVTEC kick-in-the-head sensation as the A2, the earlier onset of …

2023年1月30日 · If you’re keen on safely turbocharging or supercharging your K20 engine swap project car, then the K20A3 is the right choice for you. Another advantage with the A3 is that of early torque; it makes 142 lb-ft at 4000 rpm — 2000 rpm sooner than the A2 motor which makes the same torque at 6000 rpm.

K20A3 - USDM RSX base and 02-05 Civic SI. Now there are other engines including: K20A4. K20A5. K20A6. K20A7. K20A9. But they are all basically shit and and the same as the K20A3 USDM base engines.

2023年11月13日 · K20A4 is a K20A3 modification for the USDM Honda Accord (2003-2007) and Honda CR-V (2002-2006). K20A6 is another modification of K20A3 but for the Honda Accord (2003-2007), sold in Europe and Australia.

2018年7月3日 · K20A3 is an analogue to K20A1 for 2002-2006 Acura RSX and 2002-2005 Honda Civic Si. The size of injectors is 270 cc, i-VTEC is triggered at 2,200 rpm. A PPA intake manifold is used here, which is triggered at 4,600 rpm.