1/23/2024 0 Comments K20 jdm engineSome K20 engines respond better to less aggressive cam durations check your engine on a rolling road. You should ideally optimize your power band to your preferences so for a daily driver stick with a fast road K20 camshaft Motorsport and race camshafts, increase the top end band but as a result the car will not idle smoothly and low end power nearly always suffers.Ī Motorsport camshaft is not great driving around busy urban areas. NB: Fast road camshafts tend to increase the performance through the rev band, you could drop a little bottom end bhp but the top end will be lifted. You can think of the K20A3 as a 12 valve engine under 2200rpm and over this threshold the additional 4 valves are used thanks to the additional cam lobes. Interestingly it's worth noting that the K20A3 VTEC only works on the intake but on the K20A2 it operates intake and exhaust. This saves the effort of sourcing and fitting a fast road cam and may suit your K20 tuning needs more suitably.Ĭompetition cams, bump the high end rpm power band but as a result the car will not idle smoothly and low end power nearly always suffers.įor a road car must carefully try to optimize your power band to your driving style. With the VTEC engines you can potentially force the VTEC to cut in at lower RPM, effectively giving you more low end power and better pickup as the sacrifice of economy. Altering the camshaft profile alters the intake and exhaust durations on the engine and can dramatically change the torque and power output. Significant gains on the K20 can be made from camshaft upgrades. The cylinder heads were also ported and polished and these special engines were hand tooled at the factory to very tight tolerances. The Spec R K20 engine was fitted with a lighter flywheel and boasted high compression pistons, stiffer valve springs and longer camshaft durations. Head swaps are popular mods, for example putting the K20A head and cam profile on the K20A2 to benefit from the cam durations and timing. Also you can look to perform head mods (flowing and porting), bigger valves, fast road cams and forced induction upgrades to improve fuel.Ī stock K20 can usually cope with around 400hp before internal strengthening is required but we've heard of some K20A3 blocks breaking rods at 340hp. Fuel to Air ratio is vital so upgrade the fuel pump & injectors. Expect 10-20% on NASP engines and 30-40% on turbocharged units.Įvery tuning project will aim to increase the air supply, but fuel supply is just as vital and will need to match the air the engine can utilise. While some cars can be easily remapped, others may require piggyback ECU's or aftermarket ECU's but this is the most vital step of your tuning project as it fully releases the power from all of your mods and upgrades. Whilst most engines can cope with mild tuning mods, TorqueCars recommend that you upgrade the internal components before these weak spots manifest themselves. Tuned cars will show up weaknesses, typically in the turbochargers, clutch and internal engine components. Guide to the Best K20 Tuning Mods & UpgradesĪ restricted intake or exhaust will have an impact on your car's performance, so use an induction kit/filter upgrade and better flowing exhaust whenever your tuning creates a flow restriction.īraking, Suspension and general alignment of the suspension components is vital for any tuning project even before you start increasing power. And be sure to subscribe and support our new channel. Please watch TorqueCars Video tutorial on car tuning. The K20Z4 was related to an S2000 engine so dropping in the crank from the S2000 would give good power gains (research your engine and donor engines carefully before doing this). This will give you a lot more torque but you will need to lower your rev limit. There is a modification known as the K FRANK, where you fit an Accord 2.4 bottom end with a type R head on the top. Altering the camshaft profile alters the intake and exhaust durations on the engine and can dramatically change the bhp and power output. Significant gains can be made from camshaft upgrades. We won't be swayed by popular K20 parts, they need to be cost effective. The ultimate K20 parts on an engine are obviously the ones that give the biggest return for your cash. Honda K20 are awesome to work on and with the ultimate performance mods like ECU maps, turbo kits and camshafts you will definitely maximize your driving enjoyment. Herein we review K20 tuning and show the ultimate modifications for your car. "Comprehensive guide to tuning the Honda K20 engine!"
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