Help with generally setting up 172, rolelrs etc.

right, wacked the 172 on my sr, everything else stock. i got told you dont need to upjet, so i didnt, bike ran like shit, upjetted by 2 and it felt to rich? so went back down and knocked the needle down by 1 and it runs good, but bike wont go past at 60? something is restrcting it. So i was thinking new rollers, belt, springs to over haul the transmission side as i dont think thats been touched in a few years.

so what do people recomend rollers wise? and do you thinking its getting too lean on top end? i got no A/F mix screw on my carb for some reason, its like a blanking plug in there? actually saying that i think it maybe over revving?

Help appreciated

 

i take it u have got a delly 20.5? there is a air/fuel mix screw in there just take it out and mod it so u can fit a little screw driver in there i done it to mine works fine.

 

ok cheers, i checked the crank, and seemed ok, had a little bit of side to side movement (few mm's) which i heard was ok, hope its not a tired engine but ill get the side case off tomorow or next week.

ill order neew belt and some 12.5's.

cheers minor.

 

rule is get it running perfect as a 125 first then you eliminate alot of problems. i ran a 90 or something like that in my sr172. runner exhaust 12.5 gram rollers standard belt and it wheelied like fuck

 

For real you dont have to upjet for a 172? So I can just bang a 172 on my skipper and it'll run well without changing a thing providing my bike is standard, running the airbox, and kit installed correctly??