Here's Eaton's own analysis of the difference between the TVS 2.3 and the 2.65.So, conclusions on as like for like comparison as I can think of? Larger blower at same boost does = more power. The curve was smoother and it is clearly running more efficiently. Not by much though. Honestly not by enough to matter with current set up. That said, the potential with the larger blower with larger CAI + TB + E85 is FAR greater than it is with smaller. Nevertheless, the data is what it is and larger blower was +20 WHP.
R2650 versus R2300
- 4% more efficient
- 15% larger (2300cc vs. 2650 cc)
- 18% less input power required
- 25% more air flow at 18,000 RPM and 14 psi boost (2.0 Pressure Ratio)
- 72% isentropic efficiency vs. 68%
I would like to see how the Gen 3 would compare to a 3.5 to 4 liter blower using pump gas. I think that comparison would change the bigger is better dynamic, but again I think the answer is it depends on what blowers are in the analysis. I'm sure the bigger blower would come out on top if we changed the fuel source to E85 where the engine can tolerate a lot more boost.
What I really like to know is how your torque peaks compared between the 2.3 and 2.65?