MOPED ARMY

I run a 15 mm bing with a case-matched 70cc kit, circuit pipe and use an 82 and it is right on. It always helps to start rich and go down from there.. less likely to break anything that way!

And that's with the 14mm intake?

Or you run an 82 with your setup along with a 15mm intake?

I have it on a 76 right now with the richest needle setting. I was at a 72 with the 14/14, but i didn't upjet too far because i added the Hi comp head (correct me if im wrong, but i figured you would downjet with the added compression) Setup below

Case matched and slightly ported 70cc Kstar

Hi Comp Head

Tecno Circuit

Hi Flow filter

15mm bing/14mm intake (edited)

Yes stock air box sucks and you could have the dreaded 212A atomizer in your carb

14mm bings come with #222 atomizers But many people put bastard parts in them.

With 14 mm bing, a metal mesh filter, 70 cc kit and a techno circuit pipe my jetting always seems to come up at # 72 jet

2.17 and 2.19 will be leaner.

Get the two and one ring needle's.

Most 14/15mm bing's with piston port 65cc/70cc kits tune in close with a 2.17 atomizer, two ring needle, #72 jet.

More Bing info

https://www.mopedarmy.com/forums/read.php?7,2891329,2893812

https://www.mopedarmy.com/forums/read.php?7,2116363

https://www.mopedarmy.com/forums/read.php?7,2117054,2120556#msg-2120556

Yep.. mine was with the 15mm intake. My setup is same as yours except I didn't port my kit, and I have the 15mm intake, and 82 is right on for me.