Modern Vespa

Hi all. My Allstate project is at a point I don't know what to do next only because there is so much to do. Engine rebuilt, frame sandblasted, All welding done ( new floor). I need a carburetor upgrade from a Dellorto 20/15 to a 20/20 since installing a 150cc jug and piston. Sip road pipe and Vape ignition. So to my questions What carburetor?What jets ? and do I need to change air filter and box. All help appreciated

Try posting this in the Not So Modern section. You'll get more traction there.

A moderator will most likely move this post over for you.

Welcome to MV!

Del orto or spaco for the carb.
Jetting probably what comes with the carb? Pretty sure they are stock for the 150 so maybe up 10 on the main and work your way down. Get the 24.24 filter instead and the box is fine.

Here is the carb at SM. I'll let other chime in on the proper jetting.

https://www.scootermercato.com/Scooter-Parts/Complete-Carbs/150490

Thanks for carb info gancarz and Shebalba

if you want to keep it simple, you can run your original carb and upjet 4 on the main. I have one in a mid 60's Allstate's running exactly that.

So, each mod equals one jet size, basically?