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H23 IM upgrade....still get good mileage?

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    #16
    Originally posted by Jarrett View Post
    The F22A throttle body will not bolt up to the H22/H23 upper plenum.
    why wouldn't it? F, H, B and D series throttle bodies all have the same bolt pattern.

    member's ride thread
    93' EX Coupe H22A w/ P2T4 Sir 5spd 191whp 155 wtq
    99' Lexus LS400 157k VVTi V8 gets up & goes...new DD
    91 Accord SE 176k
    97' Honda Odyssey 199k miles...$485 spare van for my parents

    Comment

      #17
      Originally posted by Jarrett View Post
      The F22A throttle body will not bolt up to the H22/H23 upper plenum.
      Correct.

      Originally posted by Losiracer2 View Post
      why wouldn't it? F, H, B and D series throttle bodies all have the same bolt pattern.
      No, they don't. I've recently run into this problem and im now looking for an H23 TB...


      Speaking of...Jarrett, did you get a chance to grab one for me?


      Form.Follows.Function

      Comment

        #18
        Originally posted by Function>Form View Post
        Correct.



        No, they don't. I've recently run into this problem and im now looking for an H23 TB...


        Speaking of...Jarrett, did you get a chance to grab one for me?
        so is it just the F22 TB thats different? or what makes it not bolt up?

        member's ride thread
        93' EX Coupe H22A w/ P2T4 Sir 5spd 191whp 155 wtq
        99' Lexus LS400 157k VVTi V8 gets up & goes...new DD
        91 Accord SE 176k
        97' Honda Odyssey 199k miles...$485 spare van for my parents

        Comment

          #19
          3 out of 4 bolt holes line up. The fourth is off by about a 1/2".


          Form.Follows.Function

          Comment

            #20
            Originally posted by Function>Form View Post
            3 out of 4 bolt holes line up. The fourth is off by about a 1/2".
            hmm good thing I grabbed the entire H23 manifold though. Unfortunately it has the MAP sensor on the TB? I thought that was only on 97 and new cars? But I grabbed this off a 4th gen 95 prelude.

            Eh, either way I've got more than enough H23 plenums and H22 throttle bodies lying in my garage

            member's ride thread
            93' EX Coupe H22A w/ P2T4 Sir 5spd 191whp 155 wtq
            99' Lexus LS400 157k VVTi V8 gets up & goes...new DD
            91 Accord SE 176k
            97' Honda Odyssey 199k miles...$485 spare van for my parents

            Comment

              #21
              Hmm learn something new everyday. Looks like if I do this I'll use the OEM throttle body off my h22. It had a map sensor on it as well, and its from a 93 Prelude.
              -1992 Accord EX H22 234whp 185wtq
              -1993 Accord EX SOLD
              -1995 Accord EX Wagon Daily Driver
              -2012 GMC Canyon V8 4x4

              Comment

                #22
                Originally posted by GunRunner View Post
                Hmm learn something new everyday. Looks like if I do this I'll use the OEM throttle body off my h22. It had a map sensor on it as well, and its from a 93 Prelude.
                yeah i think I'll attempt to do this mod next weekend. 114 today, not happening in this heat

                member's ride thread
                93' EX Coupe H22A w/ P2T4 Sir 5spd 191whp 155 wtq
                99' Lexus LS400 157k VVTi V8 gets up & goes...new DD
                91 Accord SE 176k
                97' Honda Odyssey 199k miles...$485 spare van for my parents

                Comment

                  #23
                  I have a F22A1 with A6 runners, H23 plenum, and h23 tb bored by maxbore. I can't speak for fuel economy because I don't even try to get good numbers in mine. However, the low-end torque is great, and the throttle response is fantastic. It definitely is able to breathe better up high too, but you can quickly see that once you do this swap, the camshaft is your power limiter.
                  There are no black and white suspension answers!!!!!!!!!!!

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