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.

Nov 12, 2016 · 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 …

Jun 9, 2022 · In this article, we discuss the Honda K20A3 engine. That includes K20A3 specifications, K20A2 vs K20A3 comparison, and K20A3 reliability

Mar 14, 2010 · 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.

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.

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.

Jan 30, 2023 · 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.

May 5, 2004 · So my question is, to you guru's of the K20 motors, what visible differences are there between the JDM k20 and a USD version? Obvisously the valve cover, red compared to silver, but what else? I know the JDM intake manifold is better, is there a visible distinciton between it and one from either of the USD K20 engines??

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.

Sep 16, 2021 · there is a JDM K20a with some 210HP and there is an economy k20a with a plastic inlet manifold and way less power. JDM k20a with a alloy intake manifold. Under cover in the middle it should read PRC: in how far the economy and the K20a3 are similar, I don’t know. Most want the real deal.