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building gsr block for boost.. piston ratio. 9.7.1 or lower?

Discussion in 'Forced Induction' started by DVJr84, Nov 3, 2010.

  1. DVJr84

    DVJr84 H22A4drCivic

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    I have in mind manley h beam rods wiseco forged pistons my question is what compression ratio is best for turbo application? Some ppl say not to lower to much and other say i should. Being bored to 81.5mm
     
  2. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    What kind of tuning do you have access to? 10:1 isn't bad to boost on- people do it all the time... that's the stock compression ratio for quite a few B series engines.
     
  3. PhyRe

    PhyRe Senior Member

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    vitara builds can put people in the 8s. as a dd id keep it stockish if its a power beats id lower

    edit: the higher the comp the less boost ull "need"
     
  4. crxpower24

    crxpower24 Member

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    r those piston good for boosting
     
  5. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    It's a GSR block... no go on the Vitata pistons.
     
  6. PhyRe

    PhyRe Senior Member

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    truth.
    but for D they r great for boost
     
  7. Briansol

    Briansol Admins Admin VIP

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    what's your
    - power goal
    - turbo size
    - fuel/tuning capabilities
    - cams


    all those will effect what to go with for compression. Generally, 9-10 is where you want to be on a b-series with GOOD tuning.
     
  8. crxpower24

    crxpower24 Member

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    arent cp pistons good for boosting a t04e
     
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