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What should I stroke a B18B to?

Discussion in 'Engine Building' started by allbottledup, Jun 15, 2004.

  1. allbottledup

    allbottledup Senior Member

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    I want to rebuild my engine and stroke it. My overall goal is to run in the low 20 psi range. What should I stroke this engine too for most power?
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    stock stroke.

    sleeve/bore it instead.
     
  3. allbottledup

    allbottledup Senior Member

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    so i shouldnt go to a 2.0?
     
  4. allbottledup

    allbottledup Senior Member

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    also what compression should I run? 9.0:1, 9.6:1, ect...?
     
  5. allbottledup

    allbottledup Senior Member

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  6. StyleTEG

    StyleTEG Senior Member

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    depends on the cams you are running.

    Too much / Too little compression leads too overcamming or undercamming the engine.

    Notice the key in those words is... "cam" :thumbsup:
     
  7. pissedoffsol

    pissedoffsol RETIRED

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    I wouldn't go to 85. 84 is plenty and still elaves plenty of sleeve strength.

    it will make a gsr 1.93L and an LS 1.97 ish

    built it to hold the boost- give it a good tune and plenty of fuel, and an 84mm bore will go to 600+ with the right turbo and fuel.

    compresison, i'd go 9:1 if you are going big. 20 psi in and of it self is pretty meaningless without a mention of which turbo.
     
  8. allbottledup

    allbottledup Senior Member

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    Sounds awesome, do you think a t-61 would be good or should I go bigger? Im going to use a nitrous kit for prespool to take out some of the lag.
     
  9. StyleTEG

    StyleTEG Senior Member

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    Time to look at some compressor maps. Its the only way to size a turbo to your motor. Guessing is not a good way.

    Do you think honda guesses at what makes their engines performs the way they do? Obviously not, they spec it out and find out what parts work together for the best package.
     
  10. pissedoffsol

    pissedoffsol RETIRED

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    i think you need to put up a realistic power goal, sans race gas, sans nitrous.

    if you want your 84mm gsr to hit XXX horsepower, you need Y turbo
     
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