A K20 swap can be done with some minor adjustments to our K24A2 swap parts, but K20 engines are more expensive, harder to find, and don’t make as much power or torque.įor Miata swaps, we recommend an NA or NB 5 or 6-speed transmission for naturally aspirated builds, and one of the BMW transmission options we support for turbo applications.Ī Miata 5-speed paired with a 4.30 Torsen differential is a common choice, as well as a 6-speed with a 3.90 or 4.10. While other K series engines can be used for these swaps, they will all make less power than the engines we recommend. We generally set the rev limiter to 8200 RPM for track use. We currently only support the K24Z3 platform for the Miata chassis, and recommend a K24A2 for other cars.Ī stock K24A2 engine with a 50 degree VTC gear typically makes 220-230whp and 180+wtq with the supporting upgrades in our swap packages. The JDM K24A engines with an RBB head are nearly identical to the TSX engines and are also a great starting point.įor Miata customers specifically, the K24Z3 from the 2009-2014 TSX is also a fantastic choice.įor a comparison of both Miata packages, see our blog post here. The K24A2 from the 2004-2008 TSX is the most potent K24 in stock form, and can also be built to make significantly more N/A power. The most detailed information can always be found in our installation guides here.įor most customers, a 2.4L Acura TSX engine is the ideal starting point for any of ours swaps. Updated October 2020 with general information for all of our K24 swap options for the Miata and E30.
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