So I promised myself the new kit at christmas, but whilst the UK is in lockdown not much to do so fitted it already!
Thought I would post my setup as a guidline as the kits instructions and jetting kit is pretty off the wall and I dont think any real help.
2011 px125 zapm engine prefix
22 tooth cosa clutch
std primary and gearing
Mazzi race cut crank.
Sip Flywheel with starter ring.
Sip flywheel side bearing.
Sip Road Xl exhaust
Si24 carb, T5 carb slide, airfilter no gauze and drilled, carb oval hole covered.
MAIN JET 127, MIXER BE3, AIR 160
IDLE JET 52/140
Idle mixer screw adjusted to 2 turns from open.
SIP Fast flow fuel tap
Malossi 178cc cast iron kit.
long reach plug
Sip Speedo MK2
The engine has no metal ground away as in transfer port matching or at the carb inlet, everything is bolt on upgrades.
The kit itself caught the starter ring on the flywheel, so I very very carfully ground away some metal right on the transfer port, not good for such a long established manufacturer, I painted the barrel and let the flywheel scrape away at the paint, its only a small area that need attention.
So far I have ridden the scooter around town and a few 50mph runs, but nothing major yet, I dont have the faster roads near by, but all is well, it pulls nicely in a higher gear when riding in traffic.
I did have an issue with boging from a standing start, I know my carb is clean inside the fuel gallerys so I decided that the progressive circuit wasnt being influenced enough or at all causing the engine to almost die when i started rolling, the fix was to wind in the idle mixer screw, the one poking out the back, this in turn lowered the tickover which I adjusted by screwing in the tickover screw, one out the top, this then moved the slide further along its track opening up the progressive circuit outlet to the income gulp, solving the bogging issue completely. My tickover when clutch is out is around 1400 rpm, clutch pulled in and gear engaged around 1200 rpm, all ish.
Before writing this I pulled the sparkplug and its the most perfect chocolate brown you could hope for, but as I say no high speed runs yet, that will probaly come much later, but so far very pleased with the performance and running temps.