I need a little help. Brand new scooter Jiajue 50 cc’s 80 cc bore kit. Learned of the CDI restriction after riding. Put in new CDI now it won’t start. Plug getting spark changed coil. Not sure what it is can u help?
Hey,
Mhm it’s interesting, but i once also had a problem with a CDI. It would spark, but not start. Never figured out what it was, but thought either the timing is wrong (which shouldn’t be) or it was just broken. Try out the stock CDI again and see if it starts again, then get a unrestricted CDI by another brand I’d say…
hi my name is anmol i am from india i own a 2 stroke scooter of 100cc of 7.7 bhp@5600rpm,recently i changed its piston size from stock to 3rd oversize and replaced its air filter to racing air filter, do i need to change its cdi and engine porting ???? and can i change its exhaust ?? my engine does not fit to aftermarket exhausts like importing aehaust of polini or aerox there is a mechanic who does exhaust for 2 stroke motorcycles ,i showed him a design he accepted to do so can it increases the performance of my scooter ??and do i neet to replace the stock reed to a fibre reeds?? and do i need a differnt clutches??plz reply………………………………….
Hey Anmol!
Nice it is great that you have a guy who can make an exhaust for you, but in general making an exhaust is very difficult. If he is capable of building a complete exhaust it should be complete easy for him to modify an existing exhaust to fit your model (it usually just requires a few metal pieces for the mount and some pipes to fit the downpipe). There’s no need to do any special modifications, but it is advised to use fibre reeds as they perform a bit better (tho lasting less long) and install harder clutch springs (better take off). Given the racing air filter you might consider increasing the main jet size of your carburetor. CDI won’t be affected!
Thank you for accepting my subscription and I also have a question,let’s say I start off w/a stock 2-stroke 50cc and I upgrade to a 70cc piston,cylinder & head kit how would I determine the carburetor size at this point?
I commented on your other site.I will on this one.You talked about lean and rich indication on spark plugs.I have a Kymco Agility 50.the manual states between(0.06 mm.-0.07 mm) or 0.024 in.-0.028 in.I tried from minimum to max.I as put on a No-Rev CDI,Performance variator,clutch,no limited collar for variator .So what you think is best setting for plug.I am also looking for performance exhaust,and a few other things.Do you know of a great seller for this kymco.I love to work on these scooters.Thanks Daniel for you being a Valuable,informative.well manner person.Hope to hear from you soon.Thanks again,Mickey.
Daniel I am new in scooter mechanic and I Don’t know anything about.. Just to drive nicely and I love it, I have a Piaggio tph 2014 stock and I will like to make it 70cc to can make wheely and run around 100km/h,wold u like please to tell me wich parts I have to change on it to do that (money are not a problem). Thank you
Thanks for your time and consideration. I am tuning an SMC Rexy 2stroke with the 12mm gudgeon pin and the Axis 90 stamped on the gears inside the engine case. Trying to find a new wiring harness for it online. Don’t want to get gouged for what it’s sold in shops here though. Any suggestions?
I have new SYM, Symphony ST (2019) 50cc, 4stoke, EURO4.
I want to upgrade it to unblocked CDI. Do you have any suggetions which one to buy and where?
Thanks!
thank you for accepting me.
more power!
Thank you for accepting me :)
You are welcome :) I should remove the comment function on this page tho… :)
Thks for accepting my subscription cheers
I need a little help. Brand new scooter Jiajue 50 cc’s 80 cc bore kit. Learned of the CDI restriction after riding. Put in new CDI now it won’t start. Plug getting spark changed coil. Not sure what it is can u help?
Hey,
Mhm it’s interesting, but i once also had a problem with a CDI. It would spark, but not start. Never figured out what it was, but thought either the timing is wrong (which shouldn’t be) or it was just broken. Try out the stock CDI again and see if it starts again, then get a unrestricted CDI by another brand I’d say…
hi my name is anmol i am from india i own a 2 stroke scooter of 100cc of 7.7 bhp@5600rpm,recently i changed its piston size from stock to 3rd oversize and replaced its air filter to racing air filter, do i need to change its cdi and engine porting ???? and can i change its exhaust ?? my engine does not fit to aftermarket exhausts like importing aehaust of polini or aerox there is a mechanic who does exhaust for 2 stroke motorcycles ,i showed him a design he accepted to do so can it increases the performance of my scooter ??and do i neet to replace the stock reed to a fibre reeds?? and do i need a differnt clutches??plz reply………………………………….
Hey Anmol!
Nice it is great that you have a guy who can make an exhaust for you, but in general making an exhaust is very difficult. If he is capable of building a complete exhaust it should be complete easy for him to modify an existing exhaust to fit your model (it usually just requires a few metal pieces for the mount and some pipes to fit the downpipe). There’s no need to do any special modifications, but it is advised to use fibre reeds as they perform a bit better (tho lasting less long) and install harder clutch springs (better take off). Given the racing air filter you might consider increasing the main jet size of your carburetor. CDI won’t be affected!
Hope that helps and good luck!
Thank you for accepting my subscription and I also have a question,let’s say I start off w/a stock 2-stroke 50cc and I upgrade to a 70cc piston,cylinder & head kit how would I determine the carburetor size at this point?
Thank you for welcoming me to the family!
Thanks for accepting me.:)
cant wait to hear tuning info from you..
I commented on your other site.I will on this one.You talked about lean and rich indication on spark plugs.I have a Kymco Agility 50.the manual states between(0.06 mm.-0.07 mm) or 0.024 in.-0.028 in.I tried from minimum to max.I as put on a No-Rev CDI,Performance variator,clutch,no limited collar for variator .So what you think is best setting for plug.I am also looking for performance exhaust,and a few other things.Do you know of a great seller for this kymco.I love to work on these scooters.Thanks Daniel for you being a Valuable,informative.well manner person.Hope to hear from you soon.Thanks again,Mickey.
Thanks for Accepting me
Thank you for accepting me Daniel.
Daniel I am new in scooter mechanic and I Don’t know anything about.. Just to drive nicely and I love it, I have a Piaggio tph 2014 stock and I will like to make it 70cc to can make wheely and run around 100km/h,wold u like please to tell me wich parts I have to change on it to do that (money are not a problem). Thank you
Thanks for your time and consideration. I am tuning an SMC Rexy 2stroke with the 12mm gudgeon pin and the Axis 90 stamped on the gears inside the engine case. Trying to find a new wiring harness for it online. Don’t want to get gouged for what it’s sold in shops here though. Any suggestions?
Hi,
I have new SYM, Symphony ST (2019) 50cc, 4stoke, EURO4.
I want to upgrade it to unblocked CDI. Do you have any suggetions which one to buy and where?
Thanks!