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rasing compression

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    rasing compression

    what other oem honda parts will switch over in to a F22A1 to raise compression.

    #2
    i dunno about oem, but if you wanna raise compression you gotta do alot of stuff. mainly pistons. domed pistons mainly. some other stuff too.



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      #3
      If you do it right, milling your head some will raise it and unshroud your valves. I know USDM F23 (98-02 Accords 4-cyl) have 86mm pistons, but you'd have to bore over...I think their compression is around 9.5:1, no positive...but it's close. Another option is JDM F22b, which has 9.2:1 compression with same size bore (85mm). But do to that work all for 9.2?? I'd just mill the head for that much.

      What compression you looking for?
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        #4
        ^^^^ What he said is basically it. Milling the head is the best idea unless you want to go aftermarket.

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          #5
          OEM H22 pistons at 10.5:1 comp ration may be used. A little head work will be required, but not much...
          I pooped a hammer!!!

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            #6
            Originally posted by Shownngon
            OEM H22 pistons at 10.5:1 comp ration may be used. A little head work will be required, but not much...
            But how safe is an 87mm bore in a F22 block? That leaves approximately 2mm thick cylinder wall sleeves, forced induction is most likely out of the question and all-motor may still be a possibility. On the other hand, the nature of the F22 and it's small rod ratio of 1.49 and 95mm crank puts more stress on the cylinder walls than most other Hondas. How much power and RPM can you get away with on 2mm cylinder sleeve thickness is the question and for how long...
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              #7
              Originally posted by HondaFan81
              But how safe is an 87mm bore in a F22 block?
              Hmmmm.... I wonder about the F20A block with it's 88mm stroke...


















              I'll let you know..... hehehehehehehehheh...
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              ...

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                #8
                Originally posted by ZigenBallZ
                Hmmmm.... I wonder about the F20A block with it's 88mm stroke...


















                I'll let you know..... hehehehehehehehheh...
                you have to excuse zigen.. you see.. he has what i liked to call crazymothafuckawhowants88mmbore syndrome.. anyh00t..

                RAWK ON! lol


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                  #9
                  he is alive! yea but your f20a has 85mm bore, I believe....88mm would rock the RPMS..fo sho, I'm interested in your torque curve though as well

                  what's the status on my ECU Zig??


















                  I'll let you know..... hehehehehehehehheh...[/QUOTE]
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                    #10
                    the f20a piston has a higher dome than the f22b and f22a i did all the math a few months ago and it came out to be around 10.5 to 11.0:1 . i am in japan now working so i really don't have time to find the parts now.
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                      #11
                      Zigen:

                      I think I know what you and Carlos have planned for your setup. I bet it will come out nice, I think it's a good combination.
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