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    60mm TB

    Is there a 1.8L DOHC throttle body that had a 60mm throttle body plate?

    I just did some quick calcutations and a 55mm TB won't be enough for 150whp. Is there a TB that will bolt up that comes at least 58mm? I know I can bore it to 58mm but if there's one that's more than 57mm I'll take it.
    92 323 with BP DOHC
    ported/polished head, regrinded cams, JUN adjustable cam gears, ported AFM, ported/knife edged intake manifold.

    N/A project dropped.

    #2
    As far as I've been able to search, none was more than 55mm, including the Miatas.

    Comment


      #3
      your calculations are wrong...

      You can go well above 150 whp with the stock TB. Again, info provided by Vaughn over 3 years ago...

      Throttle body size is directly related to intake manifold volume, etc.
      "Never run out of real estate, traction & ideas at the same time"
      -93 MR2, 129 ES
      ClubProtege.com Tech Articles

      Originally posted by WTF
      Remember low compression makes more space for AIR, HEEELLOOOO!

      Comment


        #4
        Also, the manifold flows less than the throttle body, so it would be the bottleneck (after the VAF) before a need for a larger TB.

        Comment


          #5
          Originally posted by cortez
          (after the VAF)
          gotta love MAP
          Current Cars
          2003 Nissan 350z. Touring Edition, Pike's Peak White and dark tint. Some audio work. Twin turbo swap and more audio work over the winter. Wheels and springs this winter.

          Past Mazdas
          1994 Mazda Protege DX. DOHC swap in progress. Sold due to a move
          1992 Mazda Protege DX. BPT (GT-X) swap w. Haltech & MSD. Sold before it saw the road
          1996 Ford Probe GT. Flawless. 5-speed. Kept stock. Sold for an LS1

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