Supercharger: TVS R2650

The Eaton TVS R2650 is part of the TVS series but with some newer design features. The key feature is the degree of twist in the rotors. Other TVS models have rotors with a 160 degree twist whereas the 2650 is 170 degrees. This design also uses the 4 lobe rotors. Further the 2650 has larger bearing and thicker timing gears for better durability. Eaton says there is over two years of development in the the R2650.

Close up of the 170 degree twist rotors on the Eaton TVS R2650 Roots Blower.
Image from Eaton.

Eaton touts the TVS R2650 improves upon several factors over the TVS R2300 including:
– 170 degree twist vs. the R2300’s 160 degree.
– 4% more efficiency
– 15% larger displacement
– 18% less power required to drive it
– 25% more air flow running at 18,000 RPM and 14 psi boost (a 2.0 Pressure Ratio)
– 4% increase in isentropic efficiency


Company: Eaton
Type: Roots
In Eaton Series: TVS
Series TVS Units Include: TVS R2650, TVS R2300, TVS R1320, TVS R1900
Usage: Street, Strip, Race, Light Race, Marine
Years Offered: 2016 - now (as of Aug 10, 2017)
Availability: Available (as of Aug 9, 2017)
Displacement: 2.65 L/REV
Max Peak Speed (RPM): ~18,000
Thermal Efficiency %: 70+
Isentropic Efficiency: 72%


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      • Eaton Announces the TVS R2650

        Eaton announced the TVS R2650 which is the latest addition to their TVS roots blower series. The announcement took place at the 2016 SEMA show.

        Eaton’s R2650 is not just a larger displacement TVS. It comes with a 4 lobe optimized rotor design that uses a 170 degree twist which reportedly shortens the rotor lead which helps maintain peak efficiency with higher speeds and pressure ratios. The optimized length over diameter ratio is said to improve sealing. To increase durability Eaton has added thicker timing gears and larger bearings. Additional efficiency comes from pressure relief ports in the bearing plate to lower required input power. The end result is the largest supercharger rotating group ever produced by Eaton with improved efficiency and air flow in the upper RPM range without adversely effecting low to mid range RPM operations.

        Eaton says the R2650 was in development for over two years and has over 2,500 hours of testing using SAE standards. They believe that no other aftermarket supercharger can meet its durability.

        R2650 Improvements and Changes Over the R2300 Include:

        • 18% less input power needed.
        • Nearly 6% more efficient.
        • 15% larger displacement.
        • 25% increase in air flow at 18,000 RPM and 14 psi boost.


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