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Low Comp HeadGasket

Discussion in 'Forced Induction' started by bvtec, Sep 22, 2004.

  1. bvtec

    bvtec Senior Member

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    <_< how well will lowering the compression on a b16a to 9.01 using a headgasket be, is it possible to use 2 original headgaskets to get the compression into 9's and use some ARP headbolts.
    My aim is around 300-350 whp using my t3/t4e .60 trim using hondata. Anybody currently doing this?any advise
    thanks
     
  2. pissedoffsol

    pissedoffsol RETIRED

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    the only thing lowering your compression is going to do is going to make you need to run more boost to make the same power.
    ]if you want to be safer, yuo need fuel and fuel management and dyno time.
     
  3. bvtec

    bvtec Senior Member

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    yup i understand what u sayin but to get to my goal of 300-350 whp ill need some good tuning as u say but ill need to match that with boost (from my understanding ill need at least 14psi+ to get me to my goal)
    on standard high comp ill be risking even 10 psi with good tuning.

    so would it be decent to lower the compression using thicker headgasket and that way i save quite a bit on the SHORT RUN and i can pay more attention to tuning(hoping to piston/rod/sleeve next summer)
     
  4. NotUrAverage_Si

    NotUrAverage_Si Senior Member

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  5. bvtec

    bvtec Senior Member

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    anybody using a thicker headgasket to lower the comression if so which one and hows the car been running ;)
     
  6. NotUrAverage_Si

    NotUrAverage_Si Senior Member

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    I'm using a Cometic head gasket. I forget exactly how think but it's alittle less than 2mm's. Car hasn't been running for the past 8 months but when it was running it ran fine. I drove it with the headgasket on before the turbo kit was on and you could really feel the difference, not as responsive as it was before the thicker head gasket.
     
  7. bvtec

    bvtec Senior Member

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    nice have u ran it yet with the turbo on? :)

    thanks for the reply any more feedback on this method
     
  8. NotUrAverage_Si

    NotUrAverage_Si Senior Member

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    Yeah my car drove fine for the 2 months before I parked it and started the rebuild on it. Now the rebuild is over, the car starts and is in desperate need of tuning which should be done sometime this or next week.
     
  9. bvtec

    bvtec Senior Member

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    what headgasket will i need to get comp down to 9.01 on a b18c?
     
  10. phunky.buddha

    phunky.buddha Admin with a big stick Admin VIP

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    Use C-speedracing's compression calculator and find out.
     
  11. bvtec

    bvtec Senior Member

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    yup i used the c-speedracing comp calc and i think ill need a gasket around 0.1" thick, which is like 3 times thickness of stock gasket could i just use 3 stock gaskets on top of each other?? :p
     
  12. pissedoffsol

    pissedoffsol RETIRED

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    you can, but its a horrible idea.

    they should be rivited together at the very least. if one slips, that could be very bad for your motor.
     
  13. bvtec

    bvtec Senior Member

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    anyone know where i can buy1 from a headgasket that 0.125 thick??
     
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