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Discussion in 'Technical and Troubleshooting Torque' at netrider.net.au started by ibast, Nov 17, 2004.

  1. Hi all,

    A question on the specification of the GS500

    Are they a 4 valve (per cyclinder) or 2 valve?

    Suzuki Australia are listing them as a 8 valve bike


    The GS would indicate that they are 2 valve as apposed to GSX.

    The late eighties models were 2 valve

    Any Thoughts?
  2. i reckon if suzuki say its 8 valve, then its 8 valve. i wouldn't think you'd find a lot of 2 valve per cylinder bikes anymore :?
  3. Air cooled, they are a derivitave of the earlier GS450 motor which was a DOHC 4 valve motor.

    This link may be of help and shows the various incarnations of the GS500 (including the earlier not related 4 cyclinder GS500).

  4. The link show that they are in fact 2-valve wonders! That explains why my one was so damn slow!
  5. Errm no they are 4 valve motors... a 2 valve motor wouldn't work at all. Well not as a twin anway!

    You mean they are 2 valve per cylinder motors :)
  6. Yep 2 valves per pot but the originals were 4 valves per pot....weird.
  7. Thanks.

    I think they are 2 valve (per cyclinder) motors.

    It's funny because I thought I remebered reading some articles recently that claimed they were 4 valve (per cyclinder) motors. Maybe the journo was misquoting Suzuki Australia.

    I've always wondered why they have left them at 2 valve and why they have never increased there capacity beyond 500cc. It seem they could handle a fair bit more stroke and they use the old cast iron liners and therfor could be bored.