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    Results 1 to 11 of 11
    1. #1
      Join Date
      Oct 2004
      Location
      Austin,Tx,
      Posts
      154

      Buick Grand National Twin Scroll EFR Turbo build

      Hey guys, I haven't posted on here in a very long time but I wanted to share a project I'm just now finishing. I don't know how many of you guys are familiar with the Borg Warner EFR turbos but in my opinion they are simply the best turbochargers available on the market. I'll let you guys look them up but they are the quickest spooling turbos due to several neat features but the main one being the gamma titanium turbine wheel and shaft. After having a timing chain failure in my buick and having to build the motor, I decided that I had to have this turbo along with the advantages of doing a twin scroll setup. Unfortunately, nothing off the shelf was available so I had to build several custom parts to get it to work. The final result is still to be seen as I have not finished tuning the car or broken in the motor but I will say that the spool up is phenomenal and the car feels as fast now at 10 psi than it was before at 20. Any ways Here are the pictures of the build.



      The Turbo when it arrived
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      The mocking up of brackets
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      The finished products
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      Turbo Comparison to TE-44
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      Exhuast Moddifications
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      Going on the motor
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      In the Car
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      Attached Images Attached Images      
      1969 RS Camaro
      1985 Buick GN
      2005 F-250


    2. #2
      Join Date
      Jul 2011
      Location
      Prescott, AZ
      Posts
      206
      Country Flag: United States
      Superb fabrication and install! We agree that the EFR's are the best turbos on the market right now. There's a reason all the turbo indy cars and most Le Mans cars use them lately. Is yours a 7670?
      Last edited by Centerforce; 10-25-2016 at 03:26 PM.

    3. #3
      Join Date
      Oct 2004
      Location
      Austin,Tx,
      Posts
      154
      Thanks for the compliments. Yeah, Indy car has run them for 2 seasons now with 0 failures! Mine is the 8374 that is being run to its max potential. It's incredible how fast it spools on this little v6, it almost acts like a big block motor.
      1969 RS Camaro
      1985 Buick GN
      2005 F-250

    4. #4
      Join Date
      Mar 2006
      Location
      Lowell, MI
      Posts
      397
      Country Flag: United States
      Badass dude! Awesome twin scroll flange you made.

      Turbo Charged LS1/T56

    5. #5
      Join Date
      Nov 2006
      Location
      Hildebran, NC
      Posts
      992
      Country Flag: United States
      Quote Originally Posted by Paul69camaro View Post
      Thanks for the compliments. Yeah, Indy car has run them for 2 seasons now with 0 failures! Mine is the 8374 that is being run to its max potential. It's incredible how fast it spools on this little v6, it almost acts like a big block motor.
      This thing looks awesome!
      Where are the burnout vids????

    6. #6
      Join Date
      Oct 2004
      Location
      Austin,Tx,
      Posts
      154
      how do I post a video off an iPhone?
      1969 RS Camaro
      1985 Buick GN
      2005 F-250

    7. #7
      Join Date
      Jul 2011
      Location
      Prescott, AZ
      Posts
      206
      Country Flag: United States
      Quote Originally Posted by Paul69camaro View Post
      how do I post a video off an iPhone?
      The easiest way would be upload to youtube, then post the URL here.

    8. #8
      Join Date
      Feb 2013
      Posts
      1,414
      Country Flag: United States
      Subbed for burnout video...


      Ridetech Suspsension
      Tech Specialist
      Phone: 812.481.4734

      Project Fox
      1979 Trans Am

    9. #9
      Join Date
      Nov 2012
      Location
      springville al
      Posts
      18
      Country Flag: United States
      That looks so clean cant wait for vido

    10. #10
      Join Date
      Dec 2010
      Posts
      709
      That is some very nice work there, and it's a whole bunch of turbo! I don't usually care about dyno numbers, but for this, I'm really intrigued. Does this type of turbo stress the engine a bit less at lower RPMs, even with the quicker spool, or does it require a bit more attention to the buildup of the block than a typical single turbo setup that will be a bit laggy, then hit you in the junk?

    11. #11
      Join Date
      Jun 2016
      Location
      Eastampton, NJ
      Posts
      35
      Paul,

      Any update on this project and how it worked out? I'm currently running a TE44 in my GN and was just researching these BW turbos.

      Looks like a great build!

      Dave





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