13B and 20B RX-8s

Although a very well balanced car, the Mazda RX8 always lacked a little go in the horsepower department compared to the older RX-7 it replaced. Peter’s 2009 GT spec street RX8 is a great example of tuner build done well. Rather than persist with the factory 13B 2-rotor Renesis engine the Promaz team has installed a 20B 3-rotor engine using … Read More

Sound of the 20B Rotary Engine ~ Mazda RX-7

Charles’ wild Mazda RX-7 tearing it up at the track! Power comes from a Promaz bridge ported 20B triple rotor engine and boosted by a Garrett GTX42R turbo running on methanol fuel and backed by a Jerico 5-speed gearbox. Easter Car Mania # 2 ~ Winton Motor Raceway, Australia April 4-6th 2015

Promaz Dyno Day

We had a great turnout at out recent dyno day. With trophies for rotary, 4, 6 and V8 powered cars it was Nigel’s VL Commodore turbo who took outright power for the day with a stunning 746kW dyno run. We would like to thank everyone who attended as well as Promaz team for their hard work on the day. Armando … Read More