Rotrex Traction Drive

Hondata’s land speed record-holding RSX went 234 mph with the help of a KraftWerks twin Rotrex supercharger setup.

Hondata’s land speed record-holding RSX went 234 mph with the help of a KraftWerks twin Ro

To that end, the KraftWerks team has stress-tested all its kits in the most extreme environments, from the blistering heat of Death Valley, to the constant high rpm of the racetrack, to the high altitude and sub-zero temperatures of Colorado’s Rocky Mountains. The result of all this stress testing are CARB-friendly kits that come with a two-year warranty and provide incredibly efficient power gains across the engine’s entire rev range. All you have to do is look at the shape of the torque curve on a dyno plot to realize that Rotrex superchargers really are an evolution if not revolution to the forced induction options available to go-fast junkies like you and me. The torque curve on a naturally aspirated or turbocharged S2000 engine peaks early in the powerband and slowly drops off all the way to redline, giving the curve a flat and slightly declining shape overall. But with the KraftWerks high-boost S2000 kit, the torque curve climbs upward all the way to the rev limit, illustrating how efficient the Rotrex blower is and how boost builds with rpm in a beltdriven supercharger. But as you can see from the KraftWerks high-boost S2000 kit dyno plot, the torque curve climbs upward all the way to the rev limit (or close to it), illustrating the Rotrex blower’s tremendous efficiency.

With much higher compressor speeds than a conventional supercharger, and without all the engine-killing heat production or risk of boost spikes common in turbochargers, all in a very compact and low NVH (noise, vibration and harshness) package, there does not appear to be any downside to this amazing new blower. But just in case you need testimony from a third party, all you have to do is give the guys at Hondata a call and ask them how they enjoyed breaking three land-speed records with their 700hp, twin-Rotrex-powered RSX. In a sport where the turbocharged competitors tend to blow engines and driveline components regularly, the Hondata RSX ran with flawless reliability up to a mind-blowing 234 mph, thanks in large part to the linear power and low heat production of the twin Rotrex blowers KraftWerks bolted up to the built K20 engine. Which leads me to wonder, How fast could my K24 EG Civic go with a Rotrex or two under the hood? It might be time to find out!