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Recent content by John Kat

  1. J

    1981 GSX1100 Katana Based Project

    Coming back to the DW versus Curb weight quoted by Suzuki, I believe all Japanese manufacturers in the 80's quoted the DW without any liquid on board i.e; not only fuel but also oil and coolant if any. This explains the difference between the two measures. A marketing gimmick as when KTM...
  2. J

    GS 1000 engine in GSXR 1100 first gen frame?

    Thanks! Sometimes other projects get your full attention and it's difficult to refocus on some neglected issues. For instance the chain drive would slightly touch the transverse lower frame rail of the GSXR chassis. It was simply a question of filing the extra matter but it meant pulling the...
  3. J

    GS 1000 engine in GSXR 1100 first gen frame?

    A detailed view of where the frame was extended to take the GS 1000 engine
  4. J

    GS 1000 engine in GSXR 1100 first gen frame?

    And the view from the cockpit with the Koso combo
  5. J

    GS 1000 engine in GSXR 1100 first gen frame?

    With the GS 1000 ST sibling
  6. J

    GS 1000 engine in GSXR 1100 first gen frame?

    One more from the rear
  7. J

    GS 1000 engine in GSXR 1100 first gen frame?

    And here some pictures of the bike without the screen.
  8. J

    GS 1000 engine in GSXR 1100 first gen frame?

    6 years later, here's an update about the XR41 replica I built. The bike has been running from time to time and is in perfect condition except that it had not been painted. Two reasons for that: the cost and the design. I wanted something that didn't look too modern and in line with the style...
  9. J

    1981 GSX1100 Katana Based Project

    My Kat Foreman wants to see a table of weight savings by descending order in order to guide future weight watchers in their quest to fly to the moon.
  10. J

    1981 GSX1100 Katana Based Project

    Quite amazing result for sure! Yes, the 1150 engine is the most powerfull power plant in the Suzuki air cooled range. I've fitted one also on my 1100 Kat as you will see below. 1100 Katana restomod with 1230 engine - The GSResources Forums​. The supervisor approved it aswell! These engines are...
  11. J

    1981 GSX1100 Katana Based Project

    I don't understand the conversion from grams to kg? In metric units a kg is 1000 grams. So eitheir you saved 184 kg or only 18.4 kg which sounds more reasonable and a great accomplishment in any case given that the bare 1150 engine must way around 100 kg.
  12. J

    1981 GSX1100 Katana Based Project

    I lift my hat off to you! A couple of years ago, I went through a weight saving program on my GS 1000 ST. The main modifications were to use GSXR 11 G/H wheels and complete front end. As far as I remember I must have gained around 14 to 15 kg... GS 1000 ST weight saving program - The GSResources...
  13. J

    Oil filter cover differences between GS 1100 and GS 1150

    Thanks Slayer, I had seen this article a long time ago but had completely forgotten it...
  14. J

    More modern cartridge fork options - retaining GS wheels & proper/revised geometry

    Thanks Salty! I forgot to mention that my OEM GS 1000 ST does have your front brake kit. It makes a HUGE difference for sure. Happy New Year to you to!
  15. J

    More modern cartridge fork options - retaining GS wheels & proper/revised geometry

    I can't agree more, the weight is the N?1 problem on these GS 1000's. Its possible to drastically reduce the weight with GSXR 1100 86/87 wheels and suspension which I did on one of my bikes but the ultimate weight saving goes with a GSXR 1052 engine in the GS 1000 frame with a Yamaha R6 complete...
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