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Power gains? with a H23 intake and a twist

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    #1

    Power gains? with a H23 intake and a twist

    I have a question... I have a F20A4 engine, as i have figured out it is exactly the same as an F22A as far as the head, valves, manifolds... The bottom end has a smaller stroke tho.... So i want to know will there be any difference in power if i swap to a H23 manifold, i have the H23 bottom part of the manifold and a H22 top half with throttle body, and i measured the OEM throttle body i have on now, and its 54mm, as to a 60+TB from the H22.... Also my engine has a redline of 6800RPM, and it kindda looses power from 5800 on, so i really hope to make a difference there...


    Any input guys?
    Tags: None
    #2
    The H23 and H22 plenum and throttle body are the same.

    You'll probably feel a bit sluggish down low, but you'll definitely make power up top. Your call. You'll notice it more with a good header and a proper exhaust system...






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      #3
      Any other inputs guys? Any estimated HP gains?

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        #4
        around 10hp with the intake manifold, and a cheap header and exhaust

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          #5
          Originally posted by rexload View Post
          around 10hp with the intake manifold, and a cheap header and exhaust
          Way more than that. With those parts dude would be neck and neck with an F20A DOHC


          Originally posted by lordoja
          im with you on that one bro! aint nothing beat free food and drinks any day of the week, even if its at a funeral

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            #6
            Could get an F22 block and swap that in. You'll get more torque

            86 4Runner - 22RE 5spd, 4" Lift, 35x12.5R15 BFG Km2's, 4.10 gears
            "The Turtle"
            DD/Trail Rig/Mud Bug

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              #7
              Im planing on keeping the F20 block cause of the stroke, more rev happy Im just trying to bolt on the boltons and see if everything fits and then take the engine out and do internal stuff, like milling, cams, porting...

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