https://laurier.dev/tags/13b/Recent content in 13b on Ways and WanderingsHugoen-usTue, 30 Jun 2026 12:00:00 +0000https://laurier.dev/post/rx8-hybrid-engine-swap/Tue, 30 Jun 2026 12:00:00 +0000https://laurier.dev/post/rx8-hybrid-engine-swap/<p>Back in 2023, when my original engine gave up, I decided to go a bit spicy. The same week my engine blew, a pre-built 13B/Renesis hybrid came up on marketplace. For those unfamiliar, a Renesis hybrid is essentially a 13B MSP where the exhaust porting has been combined with that of a non-MSP 13B. MSP stands for multi-side-port — meaning the exhaust ports are on the sides, on the side housings. On a standard 13B, the exhaust ports are peripheral, on the rotor housings. To build one, the recipe is simple: RX-8 side housings paired with RX-7 FB GSL-SE rotor housings. Mine is street ported, done using Mazdatrix templates. Some people swap rotors when doing a build like this, but I left mine as-is from the purchase — Renesis rotors with RA Super Seals apex seals and OMP deleted (premix ratio around 100:1).</p>