right the time has come do i stick with the 17.5 auto chock carb deloit or put a 21mm malossie delorit auto chock carb on it what do people think my spec is polini sport kit stage 6 belt stage 6 rep exhaust new clutch with heavey duty springs should have malossie reeds soon as well and being dynoed next week end
17.5mm there is no advantage to fitting a 21mm carb to a 70cc sport kit. Have a look at the Pedpart blog.
Here's the blog http://www.pedparts.co.uk/blog/yamaha-aerox-carb-comparison I know it's for an Aerox but the principle is the same for your ped.