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Search results

  1. J

    1981 gs750 (gs750e) Retro Racer project

    Be aware that the modern inverted forks are typically shorter than the oem resulting in less ground clearance. On top of that the triples have less offset resulting in more trail made worse if you keep the 19" wheels.
  2. J

    1100 Katana restomod with 1230 engine

    I believe I just hit another issue today... As I was going to install the cylinder block, I realized that the cylinder studs might be of a different length between an 1100 and a 1150 head? There goes another order to APEracing for heavy duty studs! Given the difficulty of fitting the pistons in...
  3. J

    1100 Katana restomod with 1230 engine

    Thanks Andrew, Looks like a good reason to do so but in my case, I believe the PO just assembled the parts available to get the bike to run... He forgot BTW to use the specific variable advance CDI for the 1135 bottom end!
  4. J

    35, 40 and 45 mm offset triples to fit GS 1000's with 43 mm cartridge forks

    And one more picture
  5. J

    35, 40 and 45 mm offset triples to fit GS 1000's with 43 mm cartridge forks

    And another picture
  6. J

    35, 40 and 45 mm offset triples to fit GS 1000's with 43 mm cartridge forks

    Sorry Chuck, I believe I never answered your questions... As I pulled my 1100 Kat apart that has the DL 1000 Vstrom triples, I took a few pictures side by side with a GSXR 2nd gen triple with lock stops modified for a GS 1000 frame I used a couple of shims below the bottom bearing on the Vstrom...
  7. J

    1100 Katana restomod with 1230 engine

    I owned a KZ 900 when it came out and I remember it would go in a wobble as soon as you tried going fast around corners... I have no experience of drag racing but I believe one must not hold the handlebar too firmly? Easy to say behind one's PC!
  8. J

    1100 Katana restomod with 1230 engine

    The front brakes are the OEM Yamaha R6 4 pistons, not the level of the Brembo Stylema's of course but not a problem on the road. Most of the time, I ride with my wife who owns a Triumph Street Triple RS 765. She's a very capable rider ( I call her "Valentinetto") and she was amazed by the...
  9. J

    1100 Katana restomod with 1230 engine

    Coming back to the "hinge in the middle" issue with some GS 1000/1100's, I can report that a standard GS 1000 Frame with modern suspension and tires has no issue whatsoever. I went for a long ride yesterday on my GS 1000 with an R6 front end and a GSXR 2nd gen rear end with an Ohlins shock and...
  10. J

    1100 Katana restomod with 1230 engine

    In my view, the bikes moved to the modern age when the suspensions moved to "cartridge type" forks and shocks. I've used emulators on my GS 1000 S with a 1st gen GSXR 1100 front end but it's still quite short of the performance of today's bikes. BTW, I have absolutely no "hinge in the middle"...
  11. J

    1100 Katana restomod with 1230 engine

    Indeed, it's a 1965 Superhawk that's like new following a bare frame restoration. It's so nice, I'm scared to take it on the road! In fact it's on an identical machine that I started my biking career a long time ago...
  12. J

    1100 Katana restomod with 1230 engine

    I bumped into a new issue: the ECU on the bike is a GS 1100 unit that provides a fixed ignition timing while the 1150 engine requires an ECU with variable timing advance... The PO obviously just banged the 1100 and 1150 pieces together without further thought! Of course the OEM 1150 ECU appears...
  13. J

    1100 Katana restomod with 1230 engine

    With the help of 2 friends, we got the engine out and the frame is now bare, ready for sandblasting. The cylinder block should be rebored by tomorrow...
  14. J

    1100 Katana restomod with 1230 engine

    I believe it's OK as I found the diagram to set the cams in a french technical manual. Here it is for anyone interested:
  15. J

    1100 Katana restomod with 1230 engine

    I have an issue with my OEM cams on my 1150 engine. The camshafts came with separate cam gears and I'm concerned that they are the right type? The intake gear is marked #451 and the exhaust #470. Is that correct?
  16. J

    1100 Katana restomod with 1230 engine

    Haha, it wasn't exactly cheap but just across the channel from France, there is a small island that must have the most enthusiastic racers in the world! I couldn't believe my luck when I saw the head for sale on ebay UK. I didn't even try to negociate the price as I was so happy!
  17. J

    1100 Katana restomod with 1230 engine

    As mentionned elsewhere the bike came with an 1100 Cylinder head on a 1150 bottom end. Luckily, I found a matching 1150 cylinder head that has been ported. I noticed that the cams are different between the two models (R2 vs R1) Luckily the design of the head puts the intakes at exactly the same...
  18. J

    1100 Katana restomod with 1230 engine

    Glad to help you out! You need the 1st gen DL 1000 triples and the bearings from All Balls racing: https://www.allballsracing.com/index.php/forkconversion PS: the reason it worked with Bandit legs is that the spacing is identical to the OEM Bandit triples.
  19. J

    1100 Katana restomod with 1230 engine

    Very valuable inputs (as usual!). Your experience with your bike reminds me of the issues I had with my GS 1000 ST. Past a certain speed the bike felt also unstable with slow weaves building up... After modifying it to GSXR 1st gen wheels and fork plus a GS 1100 swingarm it cured the issue. The...
  20. J

    1100 Katana restomod with 1230 engine

    I'm well aware of these modifications but have decided to keep the frame stock. Two reasons for this: first I can get the bike back to OEM if required and second at my level of riding they are not required. A few racers over here believe there is no improvement to be had? I remember an article...
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