Borg Warner EFR Series Turbo's V 2.0

[burn4005]

nice to see a tuner ramping in power instead of having the 5000rpm torque mound.

 

would be a hoot to drive.

For context, I have 490rwkw at 27psi on a 2.6 8374 and that was doing 126,000rpm on the turbo (maxed) so there would still be a bit left in the 8474 for sure.

Edited April 19 by burn4005

[TurboTapin]

On 1/18/2024 at 8:10 PM, Komdotkom said:

Thanks gents, your input is very much appreciated

Clearly I'm not smart enough to work this out, who do you engage as a consultant to spec a turbo for something like this? I wouldn't know where to start looking for the right kind of boffin for this.

Turbomachinery engineers. They're just mechanical engineers who generally studied in universities focused on oil and gas, aviation or that had a formula SAE competition team. We have an entire team of them in our engineering department... they geek out over data and performance testing. I worked with them a lot when we developed an anti surge system for centrifugal compressors ran by electrical motors (~20 000-50 000HP) to avoid surging on accidental power loss. 

They laugh when I mention automotive turbochargers.... it seems they're lightyear's behind in technology due to poor funding. If you think formula 1 spends a lot of money, a single turbine/centrifugal compressor package in my line of work including the balance of plant equipment generally ranges in the 150-250Million range depending on size. 
 

[Borci88]

Just trying to revive this thread... Probably a few months off completion though. 

[Beelzebub89]

Has anyone seen any results with an 8370 on an rb26 yet? Seems like it could be a good option sitting between 7670 and 8374 

 

https://www.full-race.com/borgwarner-efr-8370-turbo

[burn4005]

8370 Only makes sense to me at altitude where you need the extra PR on the compressor and gain it on The turbine. The 8374 turbine is restrictive enough at sea level.

[Beelzebub89]

Restrictive when flowing close to 500kw though yeah? just thinking if 400 to 450kw is the goal then the 8370 fits in that spot. Is the 70mm rear going to be restrictive at that power level? On the 7670s isn't it the compressor running out of puff at 400kw rather than the rear being restrictive?