mekilljoydammit posted:

I thought the S2 RX-8 gearbox was a Mazda in-house design and the same as the NC MX-5? We're both talking about the toploading one, right? Either way, problem is it'll be harder to adapt into an NA MX-5, and the RX-8 box solution is kind of an interim until-I-can-afford-a-real-box thing anyway. Though I wonder if there's some other version of the Aisin box I can raid for better forks.

I'm hoping to do better than 9k RPM - a builder over here for a circuit class with similar engine rules but with requirements to use the 6-port irons was making power into the 10s on an extend port (that's what you call "not yet a bridgeport but lots of metal removed" down there, right?) And I'm intending to use a mix of S5 or S6 turbo (whatever the flowbench says works better) and 12A irons plus some carby tricks not allowed in the other class... and I'm all-of-a-sudden thinking I should maybe stockpile a few extra RX-8 boxes.