What are this esteemed forums opinoins on the best CS sprocket for a 904 kit 790 Bonnie? I will not be doing a lot of highway riding (Daytona takes care of ALL that) but do not want the bike to lug around town. Currently had a 16T in it with the stock engine and that was fun around town but gave up TOO much top end required too much shifting. Lets hear it!
The 17 sounds good. I think I'll pop it back on and try it for a while. Baby is all ready for a trip to the dealer. Pulled the tank, seat and side covers. Have you done the 904 yet SM?
I've also been very happy with the 17T; before the big bore, my Speedmaster had the stock 16T count sprocket, I figured that the BB would give me enough additional torque where I could afford to go to a 17T front, and conserve on fuel economy without losing any of the take-off grunt.
I have not done the 904 yet. I'll be ordering the Wiseco kit within the next 2 weeks. I have already ordered my oversized valves for the head. In the next 2 weeks I will also order my HSR41mm mikuni carb kit from bonneville performance.
The service manual is a little vague in that respect, but it looks like the valve seat itself can be modified. The manual (3.24) mentions either repairing a seat (if possible) if the seat width is outside spec, or replacing the head, so I'm guessing that Triumph doesn't recommend removal/replacement of valve seats. ouch.
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