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ENGINE ONLY! 42K! 02-04 Acura RSX Type S Engine Motor 2.0L OEM K20A2 For Sale

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    More Info On ENGINE ONLY! 42K! 02-04 Acura RSX Type S Engine Motor 2.0L OEM K20A2

    Everything You Need To Know About The k20a2 engine.

    All of the most popular subcompact Honda models utilize a K20A2 engine with VTEC. The following article will give you insight into this standard motor, what it is capable of, its problems, and how to maintain it properly so that you can have years of trouble-free operation. TECH SPECS
    • Size / cc: 90.7 x 75mm
    • Number of cylinders / configuration: Inline-4/16V DOHC i-VTEC
    • Power output: 140 hp @ 6600 rpm, 127 lb.-ft. @ 5200 pm
    • Redline: 7400 rpm
    • Torque peak/engine speed: 5200 rpm
    • Bore and Stroke: 86mm x 86 mm
    • Valve Train: 16 valves; Chain-driven DOHC, 4 Valves/cylinder
    • Fuel System: MPFI with dual injectors per cylinder
    • Transmission Type: Close-ratio 5-speed manual or four-speed automatic w/ lockup torque converter


    The K20A2 has several turbocharged versions, including the K20AT and K24AT. These motors are found in many Hondas high-performance models like the Civic Type R (FK2) and Integra Type R (DC5). The k20at, for example, is rated at 206 horsepower @ 1.0 bar of turbo pressure. The Turbocharged K20A2 motors are a fantastic choice for enthusiasts looking to get the most out of their ride but may not have all the necessary equipment. However, one major drawback of running a turbo setup on this motor is cost, as it increases significantly over bolting up a set of cams. The reason being that the turbocharger system has to be designed around this specific block to get everything working correctly, which is not easy for your average engine builder.

    Common K20A2 Engine Problems

    Overheating is a problem that can occur with these engines, and it may be more common than you think. This issue generally occurs due to either a failed water pump (the impeller on the inside of the block breaks apart) or, even more commonly, clogged radiator cores/passages. Either way, overheating problems usually only arise after the motor has been driven hard for an extended time (e.g., racing, towing heavy loads). If possible, putting in a high-flow water pump with a metal impeller is the first thing you should have done when you buy the car. Check out this video for more info on how to do that. You can prevent overheating problems by draining and flushing your coolant every two years or so, or even better after each track day or long drive. I recommend putting in fresh Honda coolant, which prevents algae buildup and protects against corrosion of several metals used inside the engine. If overheating occurs despite using proper coolant, always check the radiator first! It's not pretty when you overheat the engine because you neglected to check the radiator. The rest of the cooling system will hold up, but there is no point in running a coolant flush if that isn't working correctly.

    Common Driveability Problems

    If your k20a2 has a rough idle or misfires, it probably has cold-start problems. This problem arises from carbon buildup on the face of the intake valves and the area surrounding them called "valve seat recession." An engine rebuild or valve job is usually required to fix this issue, including removing the cylinder head and cleaning out those areas. Commonly, Honda motors have recessed valve faces which need special tools to remove carbon deposits from those areas without ruining the surface of the valves. An excellent strong engine degreaser and some q-tips usually do the trick, however.


    Q: How much HP does a k24a have? A: The exact numbers vary depending on which Honda you are looking at, but generally, these engines make around 190-210 hp. Q: What's the difference between K20a2 and K20a3? A: The difference between K20a2 and K20a3 is in the pistons, where the a3 has 9.8:1 compression rather than 9.5:1 found on the K20a2.

    Final Thoughts

    The K20a2 is an incredibly versatile engine with so much potential, but you have to know what you are doing to get the most out of it. Building one on a budget with high compression pistons and a ported head can yield excellent results with proper suspension modifications. With just a header, intake, tune, and cams, you can easily send your Honda into the 11s at the track or even mid 13s on pump gas. I highly recommend this engine for anyone looking to build their car while staying within a reasonable budget!