Installing a 119mm Turbo on a Five-Rotor Supercar is foolish but in a positive manner.

Installing a 119mm Turbo on a Five-Rotor Supercar is foolish but in a positive manner.

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      Are you aware of the Mazzei Formula Five? I've discussed this astonishing creation multiple times on this esteemed website. In short, it’s a custom-built five-rotor supercar featuring a beautifully crafted chassis encased in a Superlite SL-C kit car body. The last time we reported, the single-seater had generated 1,120 wheel horsepower on the dyno. That was with a 106-millimeter turbo, which has now been replaced with a more powerful 119mm turbine that promises to produce even more noise.

      David Mazzei, the mastermind behind this project, is venturing into new territory after sending his Garrett G57 turbo to Forced Induction Systems for modification. They upgraded the unit with their own cast housing and what Mazzei refers to as a “7+7 splitter blade.” Owing to these enhancements, they're now working with approximately 30% more surface area than before, suggesting that the turbo should facilitate about 30% more cubic feet of airflow per minute at equivalent boost levels.

      Although this configuration could definitely support higher power levels, that isn’t the primary goal. Mazzei aims to decrease exhaust gas temperatures while enhancing volumetric efficiency past 8,000 rpm; with the previous 106mm turbo, the power curve dropped significantly beyond that threshold. It appears that the compressor wheel of the former turbocharger spun so quickly that it couldn’t move a significant volume of extra air at higher revs.

      For additional precision, he also installed an exhaust manifold back pressure sensor, a sensor just before the throttle body to check for any backup in the turbo’s compressor, and a boost gauge positioned after the intercooler core to monitor pressure losses across the unit.

      Just take a look at it. Mazzei Formula via YouTube

      Mazzei has acknowledged more than once in his latest video that the car isn't in need of more speed for him to find enjoyment. While he may not be considered "sensible"—after all, he built a five-rotor supercar from the ground up—he explained that he will continue to experiment with this build to explore its potential, attracting several tuning clients in the process.

      That said, Mazzei is still making some modifications purely for enjoyment. Daddy Turbos created a T-51R mod for the larger super-spooler, which replicates the incredible whistle from one of HKS’s discontinued models renowned among Japanese tuners. You can essentially count on it being the largest of its kind in the world.

      I’m thoroughly intrigued by this project as Mazzei continually discovers new ways to enhance its capabilities. He approaches it not with the aim of maximizing YouTube views but rather uses the car as a test platform to learn and innovate for rotary setups. One thing is clear—he is well-versed in working with peripheral ports.

      This is truly remarkable! 119mm turbo upgrade for the 5 Rotor

      Do you have a tip or question for the author? Reach out directly at: caleb@thedrive.com

Installing a 119mm Turbo on a Five-Rotor Supercar is foolish but in a positive manner. Installing a 119mm Turbo on a Five-Rotor Supercar is foolish but in a positive manner. Installing a 119mm Turbo on a Five-Rotor Supercar is foolish but in a positive manner. Installing a 119mm Turbo on a Five-Rotor Supercar is foolish but in a positive manner.

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Installing a 119mm Turbo on a Five-Rotor Supercar is foolish but in a positive manner.

The builder of this project is far from foolish, as he continually discovers new methods to generate efficient power.