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Suzuki GSXR Head

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    #1

    Suzuki GSXR Head

    I was wondering if any has put a GSXR head (1100) on a ’83 GS 1100 bottom half? If so what was the outcome? If not could this work and would it increase the horsepower?
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    #2
    This guys done it...http://www.bertaut.com/gsengine.html
    however I have to wonder why. The GS head flows pretty darn good with the right work. I mean those NHRA 1500 cc GS based motors are using GS heads.
    just my $0.02

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      #3
      They are actually using two valve heads on the 1500cc bikes. The four-valve head is limited to 1200 cc, if I am not mistaken. Those two valve heads are not made by Suzuki but by another company and will not work on a stock GS without a lot of work.

      The GSXR head (air-oil cooled, not the H2O cooled) flows better than the GS head and for a while it was a popular conversion for the drag bikes but the ruling on 4-valve heads being limited in displacement killed that development. It just was not possible to make up the extra HP that the addition cc's added with a 4-valve head.

      It is funny how in pro stock they are running Hayabuses and TL1000s with an engine that was basically developed in 1975...says something about our old war-horses!

      Hap

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        #4
        hap

        its just like nhra and old hemi`s, you just cant do better than a old hemi

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          #5
          I have a 1500 CC top-gas motor in my dragbike. 306 hp on the dyno all motor, no turbos or nitrous. I'll take the gs1150 head over the vortek 2 valve head any day. While the vortek heads are pretty heavy duty, They can get more flow from the 4 valvers. I looked into them when I was building this bike. I spoke with Rick Ward (Ward Performance manufacturer of the Vortek) he is the one that told me that you can get more flow out of a 4 valve.
          There is also a pro-mod guy (Van-sant) that runs a gsxr head on a gs bottom end.
          I love my bike, The damn thing just keeps getting faster. four valves, no waiting.

          Mike

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            #6
            306hp aspirated! What you got in that motor...is that corrected hp, and was that pull on Nutec???

            Yoshi

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              #7
              Does this lower the front end? do you NEED to do both swingarm and front end at the same time? could I keep my handlebars or do I need to switch to clip ons?I've been thinking about this for a while, and could use some more direction.... and a front end.

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                #8
                WHOOPS! posted my suspention questions in a head post

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