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turbo help,a/r & exhaust #'s???

Discussion in 'Forced Induction' started by get_nick, May 26, 2005.

  1. get_nick

    get_nick These snozzberries taste like snozzberries... VIP

    Likes Received:
    Apr 21, 2003
    Washington State
    I'm looking at turbo kits online for my gsr hatch. I was wondering if someone can explain what a/r and exhaust #'s translate into in very simple terms so i can understand them. I know they have something to do with the turbo's power capabitlies but that is where my knowledge ends. For example i saw a t-70 turbo with .70 a/r and .84 exhaust. What does all this mean? thanks!!!!
  2. pissedoffsol

    pissedoffsol RETIRED

    Likes Received:
    Sep 28, 2002
    Retirement Home
    a/r = area/radius

    these are pics of Corky Bell's Turbo book.

    buy it.

    <iframe src="http://rcm.amazon.com/e/cm?t=eastcoastdels-20&o=1&p=8&l=as1&asins=0837601606&fc1=000000&=1&lc1=0000ff&bc1=000000&lt1=_blank&IS2=1&f=ifr&bg1=ffffff&f=ifr" width="120" height="240" scrolling="no" marginwidth="0" marginheight="0" frameborder="0">




    as for "exhaust"

    thats a misnomer at best.

    you have the turbine side and the compressor side.

    the turbine side gets spun by the exhaust, spinning the axle that the compressor is on, which creates boost.

    the larger the trim on the turbine, the more power potential, but the more lag. but this is also limited by the compressor... you really can't compare one side without the other side.

    anyway, buy that book. its worth the money, and i get a referral :p
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