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TT hot side diamteter

Discussion in 'Turbo Tech Questions' started by schmendog, Jan 20, 2014.

  1. schmendog

    Joined:
    Dec 25, 2013
    Originally I planned to run a large single BW turbo with 2.25" hot side tubing. I didn't want to do the traditional 2.5" that many others seem to do and lose a lot of velocity in the process. So now that I've decided to do twins and just picked up these T4 .83 BW 59mm turbos, Im trying to figure out what the optimum diameter would be from the manifolds to the turbo?

    Any help is appreciated.
     
    schmendog, Jan 20, 2014
    #1

  2. Gen1SVE

    Joined:
    Sep 13, 2006
    Look in the turbine housing before the scroll and go from there. I have a feeling anything between 2" and 2.5" will work well.
     
    Gen1SVE, Jan 20, 2014
    #2

  3. DeboDaddy

    Joined:
    Nov 14, 2011
    I decided to do 2" on my twins after the research i did. 2 or 2.25 seemed to be the general recommendations.
     
    DeboDaddy, Jan 20, 2014
    #3
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