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Need ideas to raise compression

Discussion in 'Engine Building' started by BigBoy, Oct 26, 2005.

  1. BigBoy

    BigBoy Senior Member

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    I want to raise it slightly since i will be on 91 pump gas

    jdm b16
    P30 pistons
    1 layer HG

    so according to the c-speed calculator..im at 11:1

    How much will it increase if i throw in some flat valves like skunk2 or supertech?

    Since ill have to remove the head, should i go with an oem 1 layer again or a mugen/spoon gasket? I want to be at 11.5 max compression.
     
  2. reikoshea

    reikoshea HS Troll...And Mod Moderator VIP

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    personally i wouldnt go higher than 11:1 on 91 octane...i dont think the valves will get you any extra compression...the only thing i got is shave the head (i think thats what the process is called)...but its not advisable.
     
  3. powerdriverh22

    powerdriverh22 Senior Member

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    flat valves will only yeild you about .3 if ur lucky. if your oging to spend that kind of money just buy some high compression pistons....if you have a standalone you can go higher than 11:1 compression, im going to run 12.1:1 on 93...higher octane is better, so really i wouldnt go above 11:1 if you dont have access to 93
     
  4. CiViC_SOHC

    CiViC_SOHC Senior Member

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    My buddy has 12:1 I think on his b-series...he runs pump gas as well runs strong except for his blown HG right now lol.
     
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