Hi, Im a Newbie in tuning scooters. I have a Stock 2013 Piaggio Zip 50 2t ( Stock exhaust - Carb - Air filter ) Previous owner got a dealer to De-restrict the scooter. I have ordered - Yasuni Z Exhaust Sytem ( Restricted ) - Dellorto Jets Im keeping the 17.5mm Stock carb on the scooter with Brass plate. Im wondering if anyone can help me with what Jet to start off with? Currently its a 53 main jet and i bought a 50 - 70 Jet box so i should be able to get the bike running with the new exhaust. Anyone got any tips what Main jet is a good starter?
probably wont need to do anything until you de-restrict the pipe, then you can start playing with jets
Thanks for the reply. After i put the pipe on yesterday it had less power than the Stock exhaust. So today we are removing both Restrictions. What would you recommend changing the Main jet too? And should i remove the brass plate on the carb? Thanks
leave the plate on the carb. Start with a 64 main jet. My own zips were great on a 62 with just a pipe fitted but 64 is a nice safe starting point to work from.
Thanks, Currently running it at 60 as that was my first guess before your post. It runs great but im wondering if i will gain anymore power from 62. Guess i have to try and find out
Sorry for the late reply. I installed a 62 jet and it runs great. The 60 jet had slight boggin on cold days so 62 seems to work great all weather.
Hi iam quit new to scooters but I have a zip aswell and was told when I got my stage 6 pro rep exhaust to put a 62 jet in if the brass plate was in and if I took that out to put a 68 jet in there and I tryed both and I must say it was a bit better with the brass plate removed but I also changed my clutch springs to yellow polini ones and dropped my rollers to 5.0g hope this helps a little
I would do 33-1 witch is about 150ml to 4.5 litres But u should be fine with 5 litres Is there something wrong with your oil pump as u don't really need to pre mix unless u start fitting race parts 70 kit crank stuff like that but u can tune your oil pump to give more oil theres a video on YouTube on how todo it really easy but if u wanna pre mix go for it as long as u don't hove loads of oil coming out the exhaust and a oily plug u should be fine cheers
Well i dont know. Its a 2013 bike so fairly new. Ive got a problem on start ups where it stutters like mad on the take off then clears about 100 meters. Im thinking its a oil pump problem. Every day i think about taking my exhaust off and turning the bike stock again.
Hi my bike is a 2013 model as well and does the same thing it's coz it's a 2stroke bike and has to warm up done it just coz the exhaust is bigger so has to warm up a little more
Ah well i was assuming its a problem. its been annoying. Not wanting to idle some times and having to hold the revs myself to get its going so it can idle. Its sometimes not wanted to start. Bulliporker: Stock Auto Choke
I would bin the auto choke and fit a stage 6 cable and manual choke adapter I just use my choke to start it then knock it off straightaway soon as I have put my gloves and helmet on its ready no spluttering or missing whatsoever
how fast does yours go because I have a stock air filter with 1 hole in it a75 jet and a yasuni z with 6.5g rollers and it only does 43