Hi again few months back i made a post about choosing carbs for my stock 135 LX motor with a lazy pierburg and have since then acquired a few goodies like a dellorto dhla 40R (emission type) most likely from a 2.0 alfa in mint condition for a steal. But the one i am leaning to more is a yamaha yzf 600r carb that i have already restored but have questions about the jetting so here goes. The original 135 is going bye bye and i have a 136B engine on the standby with a few bolt on goodies but they question is the camshaft i really do care about the bottom end power and only really want some performance until like 6000RPM since its a street driven car so i am wondering if the 136Bs stock 254 profile camshaft is enough with the combined yamaha yzf 600r carb that will be bolted onto a ported and polished head with stock MPi valve sizes and the valve springs are from TYM motorsport. The bottom end will be stock and i also have a racing flywheel to go with the car still need to source a sportier clutch kit for this thang since the stock one feels like chewed up gum its not slipping per se but has issues during high rpm faster upshifts (from what i noticed) clutch recommendations are much appreciated too!

TL:DR

-Jetting for a Yamaha yzf600r carbs on a 136B with stock 254 camshaft with mild headwork (the current jetting is most likely 165 main jets the rest is unknown and stock i only had to buy a gasket kit that came with bigger jets since like 2 of the stock ones were missing they were a 155 stock originally) + got some pod filters

-clutch recommendations for sportier/daily usage (stock one feels like ass)

-Also forgot to say i am going to be running this with an old school SU electric pump from i am pretty sure a tatra 603 or 613 so i also would appreciate feed back if its enough for this carb since ive tried the bike carbs with stock fuel pump the mechanical one and a cheap magnetti marelli electric one that just made the fuel overflow from the breather hole but surprisingly enough works just fine with the stock pierburg.

Video attached below is the said bike carbs on the completely stock 135 engine running the 165 main jets with stock factory fuel pump since the electric one made it overflow from the breather and die but i didnt realize at the time that the distributor was completely toast but surprisingly it didnt hesitate or backfire when we test drove it at WOT it just wouldnt rev past 3000RPM and was totally dead torque wise because of the said messed up distributor which has since been replaced also vacuum advance was disconnected since i am pretty sure you cant run it off one inlet on the manifold but correct me if i am wrong.

I can come back with answers mid-February, if want, hit me up for a simulation

For your clutch, you can fit the 1600cc Felicia item: it's the same diameter, but with stiffer springs built in , so it has better bite. I found it coped well in my modified 1300, and it's cheap because it's a standard item.

Unfortunately the @Thefeliciahacker who has some tips for this project is no longer in the forum.