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Wastergates and BOV sizing for GT4202

Discussion in 'Newbie and Basic Turbo Tech Forum' started by BPT Racing, Aug 18, 2010.

  1. BPT Racing

    Joined:
    Jan 16, 2006
    As the title suggests, What size wastegates and BOV's should I be looking at for twin GT4202's? The motor is 512 cid, but I plan on using a controller to keep the boost fairly low for most of the time. I want to be sure I can control the boost all the way down to 2-3 pounds if I want to. The most the system will likely see is about 18-20 psi, as I don't have a cage legal to run faster than 8.50.

    Thanks
    Scott
     
  2. BPT Racing

    Joined:
    Jan 16, 2006
    Thanks for looking, so that would be two 50mm wastegates and two 50mm BOV's?

    I don't know that I would need to be "that low" but I feel the wider range of control I have, the better I can tune the system.

    I may be totally out of line with my ideas since I have never dealt with a turbo race car. I am looking at using the boost controller to help as an adjustable launch controller so I can set the power level just about anywhere I want to help insure the car will hook on even the slipperiest tracks. Also, for consistency (bracket racing), i would like to start at the line with a low boost and ramp it up with the controller to help prevent any deviation in boost pressure between runs.

    Scott
     
  3. BPT Racing

    Joined:
    Jan 16, 2006
    VSracing -

    Thank you for the recommendations. Could you please pm or E-Mail me a price quote?

    FYI - I tried to access your web page, but both firefox and internet explorer , as well as my Avast virus software, all blocked your web page from opening. :huh: :huh:

    I am getting a Holley Dominator EFI ECU to control the fuel, ignition, boost, and other systems. I think it should work as well as a the AMS.
    Not sure if I am going to have a CO2 system yet, as I am leaning to an on-board compressor and air system for the shifter and the locker rear end.

    Scott
     
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