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Matchbot data for Borg Warner EFR8374
Here is the Matchbot link. See for yourself. I will say that this projection may be optimistic for efficiencies, however it seems doable and only requires 28 PSI boost for the low end of the RPM range (if you choose to put your foot in it and use it). It also requires the use of fire power with 100 octane gas because of that high PSI low-end boost. That necessity for more than 93 octane ends just below 5,000 RPM, when boost drops below 23 PSI. That gives me over 3,000 RPM to operate in that are maxed out at the limit of legal WHP for ST1.
The compressor and turbine efficiencies are excellent with this turbo combination of a compressor that can deliver 79 pounds per minute and a .92 turbine A/R.
I have not discussed this with my tuner, but it may be that I can have more torque/power available than the car can use at those lower RPMs. I will seldom be racing in that RPM range anyway unless I were to lose a gear. Still, I don't mind mixing in a little Torco for the bottom end.
This is new territory for me. I welcome any insight that anyone has.
As to power limits of the chassis, all I know is that the driver, John George , said he thought it needed some more power. I think they were at 370 something WHP at WGI. I can get up near 420 and (using ballast), still be legal. Direct answer: I don't know. I will be adding some gusseting.
Last edited by Scargo; 01-18-2014 at 08:41 PM.
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