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Larger Exhaust turbine housings(Twins)-How much Power Increase?

Discussion in 'Turbo Tech Questions' started by exo, Feb 27, 2012.

  1. exo

    Joined:
    Jan 19, 2005
    Have purchased and will be installing Twin .81a/r housings on-centers. Would you guys give me an idea of how much power I should expect to gain by stepping up from .58's to .81's? Couple of the more knowledgeable guys have mentioned up to a Max of 5%. Mild Hydraulic roller motor 65-6800 max. Street car. I understand the increase would depend on how much backpressure/restriction the motor had with the .58's But give me some ballpark figures.
    Of course I was being hopeful for some bigger power increases. Thanks
     
    exo, Feb 27, 2012
    #1

  2. wantabe

    Joined:
    Oct 12, 2010
    What cubes ?
     
    wantabe, Feb 27, 2012
    #2

  3. wantabe

    Joined:
    Oct 12, 2010
    Yer, just seen it in sig
    If the turbine is big enough, will make way more than 5% as stated
     
    wantabe, Feb 28, 2012
    #4
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