[Awesome (stop laughing at the back) water cooled pics]

[Awesome (stop laughing at the back) water cooled pics]

[6-speed trans in 1st generation / slabside GSX-R 1100?]

On 3/16/2022 at 7:10 AM, Gehr said:

Thanks for the information!  More research to do & thanks for giving me some options to consider. The biggest thing bothering me about this swap is I know the WERA endurance racing teams that were running the GSX-R1100's in 87' were using 6 speed transmissions. I am not sure if they ended up modifying the 5-speed transmissions or the clutches. I can't see the main body of the transmission shafts being machined to facilitate the extra gear but maybe they focused on the clutch side of that input shaft? 

The 6 speed gear box to use for this mod is 88 slingshot onwards, the best ones are L onwards as the output shaft is longer where the sprocket goes on, this makes chain alignment easier with 180 rear tyre, the 1100 clutch fits straght onto the shaft using a bandit centre, you will have to drill the clutch pushrod hole out. the bike below is fitted with standard 6 speed box, it has had six starts and six finishes in the Classic TT, And no breakdowns.

 

[6-speed trans in 1st generation / slabside GSX-R 1100?]

Gehr, regarding clutch six speed box, use the 1100 clutch as the alloy 750 one will break, if you use the original diapram spring you need to machine a little of the cutch centre out and then make a sleeved nut. or you can just use the centre from a 1200 bandit and run normal springs, from memory the bandit one just fits straight on using orignal nut. i will have a look tomorrow to see if i have a spare i can take a photo of.