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Need to bump up compression a little more

Discussion in 'Engine Building' started by BigBoy, Sep 29, 2005.

  1. BigBoy

    BigBoy Senior Member

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    cali 818
    Its currently at 11:1

    jdm b16a2 stock block
    jdm b16a1 head
    1 layer oem head gasket
    jdm p30 pistons
    skunk2 stage2 cams
    toda 4-2-1
    apexi ws2
    2.5 carsound cat
    stock tb/manifold
    aem cai

    I wanna raise the comp up maybe .5 (only have 91 octane in cali). Should i get the head milled? new pistons?
     
  2. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    yikes...in cali i wouldnt go over 11:1 personally. Milling the head might net you a bit, but i couldnt ive you any figures.
     
  3. swanny

    swanny Senior Member

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    You should be fine as long as you get it tuned. A thinner head gasket might be the cheapest solution. Anthing over 11.5 on 91 is kinda risky.
     
  4. BigBoy

    BigBoy Senior Member

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    thinner gasket? im running a one layer oem. So is my compression right now high enough for stage 2's? i havent tuned it yet.
     
  5. brian11to1

    brian11to1 Senior Member

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    milling head and thinner gasket = bad ways to gain compression.
     
  6. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    probably gonna have to bore it to do it safely
     
  7. swanny

    swanny Senior Member

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    Tune it. That will get you more gains than bumping up your compression by a few tenths.
     
  8. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    Good input. I dunno why that wasnt my first response. Its like that dude who was trying to put his cable tranny in his 99 si when he had a hydro tranny in his other car.

    The obvious answer didnt come immediately to mind.
     
  9. MikeBergy

    MikeBergy Blah blah blah....

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    Best advice. I'd invest in some sort of stand alone system. I'm finishing my 11.5:1 ls, and wouldn't dream of driving without a good tune. A wideband, a tablet pc, turboedit, an ostrich, a socketed pm6 and a dyno will be my car's best friends in about 2 weeks. Try tuning it and running a little more ignition advance; you'll get the power you are looking for, but look out for the smog demons.
     
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