ignition advancer/ sproket question gs500f

[fast05]

hello everyone, ive been looking like crazy to find an agnition advancer for my 05 500f. problem is, they dont make them. but, i was woundering if i could use one from an older gs500? is it the same ignition dose anyone know? as far as i know its the same motor, the only thing is it has a newer rs series mikuni carbs on it. and also i see everyone upgrades to a 15 tooth front sproket. dose that make a huge diffrence? and dose anyone have a 14 tooth sproket? if anyone could help that would be awsome. -Rob

[RVertigo]

Not everyone changes to a 15T...  I only did a 15T 'cause mine was shot and the 16T was back ordered...

It makes some difference, but not a HUGE difference.  Do a search on it...  You'll find lots of info.

Some people go to a 17T for better gas milage/top speed.  Some people have done 13T and I'm sure some 14T...

[97gs500e]

I ordered a 14t sprocket from bikebandit.com and will  be installing it sometime next week.  I'll be sure and let you know how it is..

[my00forest]

you could just do this for the ignition advancer
http://www.gstwin.com/diy_timing_advance.htm
and for the 14t sprocket from what i have been reading lowers the top speed but is good for "round the town" driving and gives a little bit more pep. i am planning on doing this mod simply because you can get a new sprocket for less than $10 plus ship and i dont like to ride my neked bike much over 80-85 any way

[dgyver]

hello everyone, ive been looking like crazy to find an agnition advancer for my 05 500f. problem is, they dont make them. but, i was woundering if i could use one from an older gs500? is it the same ignition dose anyone know? as far as i know its the same motor, the only thing is it has a newer rs series mikuni carbs on it.

No. You cannot use a 89-03 rotor. The ignition systems was changed in 04. Completely different rotor design and pickup. You could try the DIY as suggested. But as far as I know, noone has done it and reported back with the results.