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BPC N52 Turbo

Bimmer Performance Center N52 Turbo Kit

 

The kit has been completed and survived testing at Virginia International Raceway. The E90 held up extremely well and could really hold its own. During testing we did find some areas that could be improved upon. Currently the E90 is down for updates and we will update with more information in the future. Once we have completed a couple more track events with good results, we will post our results. We do not foresee making this into a full fledge production kit that can be purchased online. Please enjoy the journey with us and please keep your questions/comments professional and on topic.

You can also follow along on E90Post here by Clicking this link here! 

 

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The goal of this page is to keep you all up to date on the current development of the N52 platform, We know there has been talk for a while now, and many of you waiting eagerly to see what's next for the N52 after our cylinder head video on our youtube channel. We got a lot of positive feedback from a few outlets and have decided to move forward with development of a turbo system. We've already done amazing things with this motor in its naturally aspirated form and are eager to get a prototype system up and running to torture test on our dyno, at the VIR race track, and prove its longevity on the street. Prototype is now finished, and we have made over 506 WHP on the stock internals through a 6 speed transmission! NO port injection, NO fuel pump upgrade. We are using only the best turbocharger on the market, and will make it as affordable as possible with our main focus being reliability and consistent power with the quickest response. The most crucial part of the system is the turbo of course, so why skimp out? BPC sought out the BEST turbocharger to use for this application. Why did we pick this turbo? Have a look: MOTORSPORTS USE
Quote:
Designed specifically for competitive racing use, the EFR 7163 is Borg Warner's newest addition to the EFR family. Latest generation compressors combined with state of the art 'Mixed-Flow Gamma-Ti Turbine Wheel' design allows for remarkable spool and huge powerbands. This unique turbocharger is literally an off-the-shelf Indycar turbocharger, exclusively used by all 2014/2015 IRL teams.
EFR = Engineered for racing --- Borg Warner is an exclusive supplier of the Verizon indy car series, with over a half million miles on the turbochargers during practice, testing, qualifying, and racing without incident. EFR turbo development was a clean slate approach. This turbo was developed using TOP SHELF MATERIALS, just like our BMW cars. It is simply "The fastest spooling, quickest response turbocharger on the market, available anywhere, for ANY price" This exotic material was once only used in high end racing turbochargers but is now available as a standard option for a mass produced turbocharger. The compressor wheels are all made out of forged milled aluminum which are stronger than cast aluminum or billet aluminum. EFR turbos boosted winning cars from
  • Redline Time Attack
  • World Time Attack
  • ALMS LMP2 champions in 2011, 2012, and 2013!
  • This exact turbo was used on the 2014 Verizon series Indy car champion Will Power's winning car.
  • Borg warner is an OEM supplier for Porsche, Audi, BMW, John Deere and Cat! Talk about torture testing.
Turbo Specs:
  • Compressor Wheel Type: FMW - Forged milled extended tip compressor wheel
  • Compressor Wheel OD (Exducer): 71mm
  • Compressor Wheel (Inducer): 57mm
  • Turbine type: Low Inertia Gamma-Ti Turbine Wheel
  • Turbine Wheel OD: 63mm
  • Stainless Steel Sand cast Turbine Housing
  • Max Flow Rate: 60 lb/min
  • Compressor Inlet : 2.5" hose coupler
  • Compressor outlet: 2.0" hose coupler outlet
  • Turbine Inlet: 0.85 A/R V-Band (Internal WG)
  • Turbine outlet: GT-Vband (aka small 3" vband)
Turbo Features: What does all of this mean?
  • Built-in BOV = less mess, no need for external blow off valves, plumbing, and recirculation.
  • Aluminum bearing housing torque capability is as good or better than cast iron.
  • Mixed Flow Gamma-Ti turbine wheel = Quickest boost response because of light weight design
  • Titanium exhaust wheel is just as light as the billet compressor wheel attached to the other end of the shaft (which is also titanium), and that gives this turbo a 1:1 weight ratio - super fast response, stiffness to weight ratio, and vibration damping characteristics.
  • Military-grade dual ceramic ball bearing assembly with silver plated metal cage = Increased thrust capacity, durability, turbine efficiency. The ball bearing turbo is most noticed under initial spool up and transient on - off - on throttle response. It is far superior to journal bearing in this respect.
  • Stainless steel turbine housing = Increased efficiency, Improved durability (LONGEVITY) , Corrosion resistance! No rusty turbo housings.
  • Water cooled light-weight Aluminum bearing housing
  • Large internal waste gate 42mm! Its not your standard internal waste gate that you're use to seeing on factory cars.
  • V-Band Turbine Housing allows for easy install and removal with no gasket leaks or blowouts.
Here's a quick run down of the contents;
  • Borg Warner EFR 7163 Turbo, V-band, Externally gated .85 AR - ceramic coated 2000 degree stainless exhaust housing
  • Turbosmart BOV block off plate
  • Turbo manifold (still in development, working cost options - MIG / TIG / Cast)
  • 3" hot side intercooler piping & Front mount intercooler
  • 3" Downpipe to factory cat back system
  • N54 intake manifold required
  • N54 Charge pipe required
  • N54 Front mount intercooler required
  • N54 Radiator required
  • Turbosmart electronic BOV controller
  • Innovate SGC-1 Boost controller / Wideband failsafe
  • BPC software tune
  • Upgraded MAP Sensor (2.5 Bar)
  • Upgraded fuel injectors
  • Pre-Made oil & water lines
  • Optional OEM N54 oil cooler package

 

Click to see more: Turbo Kit Fabrication 

Click to see more:  N54 trans, Custom clutch, and E90 M3 rear subframe

 Click to see more: Roll Cage Fabrication

 Photos from the first track event with the Turbo kit installed

 

 

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