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a6 intake manifold vs h23 manifold

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    #1

    a6 intake manifold vs h23 manifold

    which one will my f22a1 benefit the most from....
    oh and can somebody give a link of how to uninstall my manifold and install those manifold..
    Last edited by LyvvRacingCB7; 11-12-2009, 04:04 PM.
    Tags: None
    #2
    Its easy to R&R the intake manifold. you need both the right size socket, and a offset and flat wrench in the corresponding size. I believe its 12mm.....I could be wrong haha.
    Just reach your hand back there and undo the screws. dont forget the stiffener bar also.
    You will need to buy a NEW intake manifold gasket as well......

    H23 Is ftw. Get a new gasket and your set. have fun.

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      #3
      The H23 has the larger TB and plenum... so if I had to get just one and not do a hybrid of both the A6/H23, I'd get the H23.
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        #4
        This is the 95% complete H23 IM swap....
        http://www.cb7tuner.com/vbb/showthread.php?t=16242

        This is how it looks like when finished....
        http://www.cb7tuner.com/vbb/showthread.php?t=143268

        I highly recommend the H23 over the A6, it has a larger plenum and throttle body, and its a bit bigger than the A6....
        Later.

        ______________________________
        "I ran open header once, it was sooooo loud little kids were running for cover as I was cruising at 2000rpms. That was enough to know I shouldn't floor it."

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          #5
          everyone overlooks the f22b plenum, its TB bore dwarfs the h23/h22's
          its like the difference btwn ur stock exhaust pipe diameter and the giant prolapsed gape u have now if u put a pipe on your car.
          frostwhite225@gmail.com =VENMO


          http://www.youtube.com/watch?v=NOB38zJu66o

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            #6
            Originally posted by xkjnboix View Post
            everyone overlooks the f22b plenum, its TB bore dwarfs the h23/h22's
            its like the difference btwn ur stock exhaust pipe diameter and the giant prolapsed gape u have now if u put a pipe on your car.
            But doesn't the F22B have single runners? Whereas the A6 and H23 have dual runners.

            That and the TB on the F22B is only 57mm, whereas the H23 is around 62mm.

            Now if I'm incorrect, please correct me.
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              #7
              If I remember correctly the TB's on the f22ax are 58mm, and the h22/h23 TB is 60mm.

              When it comes to the runners of the a6 they are better for top end, where as the runners of the h23 are better for low end. As for the plenums, the h22/h23 plenum is larger the the a6, and so is the tb.
              PT3/6 Development Thread | My 1991 LX Coupe | DIY: 90-93 Tcu Fix

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                #8
                Does anyone have a picture of the two for side-by-side comparison? I am curious to see the design differences.

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                  #9
                  Originally posted by AndyD View Post
                  Does anyone have a picture of the two for side-by-side comparison? I am curious to see the design differences.
                  A6 lower section/runners:


                  H23 lower section/runners:


                  Not sure if you can tell, but the H23 runners are just a little bit longer then the A6.


                  A6 plenum:


                  H23 plenum:


                  The H23 plenum has a larger volume then the A6. How much? I didn't measure... but it's noticeable.
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                  Comment

                    #10
                    i'm running a6 lower runners, and h22 plenum. i think it's one of the best engine mods done for my f22a1, oh yeaH I double stacked my IAB plates. :]

                    car sounds so much nicer and pulls nicely



                    .

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