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Oversized valves for GS1100

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    #16
    Yes, it will FIT, but I've never done one so don't know what would be involved with that one. It wouldn't be worth doing to a stock bore though as the valves are too big & you would have low port velocity. If you are in SoCal, I would be glad to help you try it! Ray.

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      #17
      How good would an 87 GSXR 750 head be. I found a deal on one with cams and cover.

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        #18
        Originally posted by Texasgs View Post
        How good would an 87 GSXR 750 head be. I found a deal on one with cams and cover.
        You should be looking for a 88-89 750 GSXR or a 90's era 750 Katana. I bet that 87 head is a small valve head and that's not what you want. Just make sure it has the casting Dot on the side before you buy.
        1166cc 1/8 ET 6.09@111.88
        1166cc on NOS, 1/8 ET 5.70@122.85
        1395cc 1/8 ET 6.0051@114.39
        1395cc on NOS, 1/8 ET 5.71@113.98 "With a broken wrist pin too"
        01 Sporty 1/8 ET 7.70@92.28, 1/4 ET 12.03@111.82

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          #19
          Actually, for your 83 750, the 86/87 GSXR head would be a much better choice with the smaller valves. How much do you plan to do to your engine? The head you already have can be made to work just fine with a little work to it. Yoshimura raced their bikes with the stock, modified heads & made great power. Ray.

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            #20
            re

            Hey Ray it is a 82 GS1100E, some other guy was posting about an 83 750 in another post. I dont want it for racing, it will just be a hot rod. That being said I don't mind having all the crap to put up with from a modified engine, But I don't want it where it will be useless unless it is wide open. The 88 89 GSXR 750 cams sound like what I am looking for. I have an 1166 big bore kit that I will be using on it, and a welded crank. The bike already has a header. I was thinking about some 36 to 38mm carbs, and a good head. Ideally I would like the Compression ratio to be 10.5, Any higher worrys me because it gets hot here in Texas. I have a billet basket and some hot ign parts I might pull off the shelf and use. I really want to get the flow up. and the GSXR head sounds like a good way to do that.

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              #21
              OldSkool Suzuki .infoBoardDiscussionsAir Cooled
              (Moderators: minxy711, Speedy STEVE Racer, Fred) Previous topic | Next topic
              Pages: 1 2 3 4

              GSX-R head to GSX engine (Read 2814 times)

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              Cross reference to similar topic over at OSS.

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