need plug number

[trackfodder]

I tried to replace the plug on y 66c Gru Bee and the plug number doesn't transfer. The usual China crap stuff. Has anybody managed to fit a suitable heat range plug? What number, please.

 

[MotorNut123]

take a look at these plugs, each plug tells you the temp range they are meant for. i think most people are running the B7HS.


Sick Bike Parts LLC - Performance parts for your motorized bicycle

 

[DaveC]

B7HS is a little cold when you consider a B5HS is in the same heat range as the Chinese plug. Yes, it will work but will be more prone to fouling due to not enough heat. Colder plugs are used when you raise the compression by milling the head or going to the Manic Mechanic heads or Puch heads which also raise the compression.

BR5HIX is the NGK Irridum plug, kinda expensive but I really liked mine and got another for my Morini.