BorgWarner EFR Turbos
10-14-2010, 01:23 PM
#1
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BorgWarner EFR Turbos
http://www.full-race.com/articles/bo...fr-turbos.html
Makes me want to ditch my billet turbo, and get one of these. Sounds so sick, and advanced.
"All EFR turbochargers use Extended Tip Forged Milled Compressor Wheels ***AKA Billet Compressor Wheels*** These billet EFR compressor wheels are manufactured from forged aluminum for maximum strength and light weight, then CNC machined on a 6-axis CNC Mill. The The blade geometry utilizes State-of-the-Art aerodynamics that delivers efficiency, boost capability and surge limits beyond any turbo we have ever seen.
EFR turbo compressor housings incorporate an integrated BOV. Yes, you read that right - the BOV is a recirculating style *built-in* to the Compressor Housing. The major performance advantage in this design is that it redirects the high-pressure compressed air from the outlet of the compressor wheel -> right at the low-pressure inlet of the turbo. This helps to keep the turbo spooled between shifts and offers cost savings/convenience while keeping MAF-based engine mgt happy. With this in place, there is no need for a BOV or flange on the charge piping. Of course for the hardcore racers who want to use an external traditional BOV, the EFR line up has that as well.
For applications which use electronic boost control, an Electronic Boost Control Solenoid (EBCS) is integrated into the compressor housing. This solenoid is truly OEM quality and uses an industry standard fuel injector plug, making it easy to connecting to multiple boost control systems. Of course if the hardcore racers want to use an external solenoid OR a manual boost controller (without the integrated EBCS), that is very easy to do."
Makes me want to ditch my billet turbo, and get one of these. Sounds so sick, and advanced.
"All EFR turbochargers use Extended Tip Forged Milled Compressor Wheels ***AKA Billet Compressor Wheels*** These billet EFR compressor wheels are manufactured from forged aluminum for maximum strength and light weight, then CNC machined on a 6-axis CNC Mill. The The blade geometry utilizes State-of-the-Art aerodynamics that delivers efficiency, boost capability and surge limits beyond any turbo we have ever seen.
EFR turbo compressor housings incorporate an integrated BOV. Yes, you read that right - the BOV is a recirculating style *built-in* to the Compressor Housing. The major performance advantage in this design is that it redirects the high-pressure compressed air from the outlet of the compressor wheel -> right at the low-pressure inlet of the turbo. This helps to keep the turbo spooled between shifts and offers cost savings/convenience while keeping MAF-based engine mgt happy. With this in place, there is no need for a BOV or flange on the charge piping. Of course for the hardcore racers who want to use an external traditional BOV, the EFR line up has that as well.
For applications which use electronic boost control, an Electronic Boost Control Solenoid (EBCS) is integrated into the compressor housing. This solenoid is truly OEM quality and uses an industry standard fuel injector plug, making it easy to connecting to multiple boost control systems. Of course if the hardcore racers want to use an external solenoid OR a manual boost controller (without the integrated EBCS), that is very easy to do."
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10-14-2010, 11:03 PM
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True, way better bang for your buck and have held up very well from what I told. They perform the same--if not better than a Garrett while being non-BB is a feat I think.
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01-24-2011, 03:50 PM
#13
Bump
This test compares the GT3582R .82 a/r (Purple line) vs EFR 8374 .83 a/r (Green line) 91 octane pump gas @ 15 psi.
The main objective was to compare spoolup and powerband between the two turbos, while ensuring the 42mm Internal WG does not creep. Test car belongs to Jun Masculino (Ikon671 on clubRSX)is an RSX-S, powered by a built K20 . K20 engines are notorious for uncontrollable boost, so in this case it's incredible to see the EFR controls boost *better* than the externally wastegated setup he previously used. High boost and race gas next week
**HUGE THANKS to Jun Masculino and Tim @ Exact Dyno for a busy day yesterday**
The main objective was to compare spoolup and powerband between the two turbos, while ensuring the 42mm Internal WG does not creep. Test car belongs to Jun Masculino (Ikon671 on clubRSX)is an RSX-S, powered by a built K20 . K20 engines are notorious for uncontrollable boost, so in this case it's incredible to see the EFR controls boost *better* than the externally wastegated setup he previously used. High boost and race gas next week
**HUGE THANKS to Jun Masculino and Tim @ Exact Dyno for a busy day yesterday**
Very good article -->http://www.motoiq.com/magazine_artic...ature-set.aspx
Last edited by viperormiata; 01-24-2011 at 04:03 PM.
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01-24-2011, 05:13 PM
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The new efrs are indeed ball bearing. I am going to get a 7670 twinscroll internal wastegate. The GTX35 is an alternative but would require two external wastegates.
I don't give too much of a **** about integrated bov but the Ti turbine plus billet wheel plus IWG plus twinscroll sounds like madness. Hopefully 35psi @ 3000rpm with flow up to 600hp of madness.
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01-24-2011, 05:26 PM
#18
Thank god faeflora left us that beautiful post 
I'll be running a 6258 or 6758 in the summer. A little update on my hot side and I'll be golden.
I would never in a million years have guessed that a internal waste gate could keep up with a external, let alone be *better.
I'll be running a 6258 or 6758 in the summer. A little update on my hot side and I'll be golden.
I would never in a million years have guessed that a internal waste gate could keep up with a external, let alone be *better.
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01-24-2011, 05:26 PM
#19
Oh they are great, no doubt.
But even if he figured out a way to get it to really hit that hard that soon he'd have to drive around on some 26" slicks or something....And then replace all driveline components past the engine.
would be fun to watch though.
esp if he broke out the sawzall again
But even if he figured out a way to get it to really hit that hard that soon he'd have to drive around on some 26" slicks or something....And then replace all driveline components past the engine.
would be fun to watch though.
esp if he broke out the sawzall again
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01-24-2011, 05:35 PM
#20
THIS
In all seriousness though, these things are going to be serious game changers for a lot of people and racing companies. When I read that Sierra Sierra was switching to EFR turbos I was pretty much nutted.
I can't wait to "clean up" and get all my *archaic* turbo stuff sold and go with the future.
I'll more than likely be driving around on 225/50/15 DR's so I will enjoy the boost hit.
In all seriousness though, these things are going to be serious game changers for a lot of people and racing companies. When I read that Sierra Sierra was switching to EFR turbos I was pretty much nutted.
I can't wait to "clean up" and get all my *archaic*
turbo stuff sold and go with the future.I'll more than likely be driving around on 225/50/15 DR's so I will enjoy the boost hit.
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