dr 180 jetting problems

[james lancaster]

hi all can anyone help me my dads scooters a px125 with a dr 180 kit sterling pipe and 28mm dellorto carb anyone got the jets i need as ive played around and carnt get it to run right

[giankx]

what carb?

[james lancaster]

28mm dellorto mate

[col68]

hi mate in my 28mm delly on my tuned 166 I have got a 125 main x2 av264 any help . I had a dr 180 before my 166 couldnt stop head leaking and nipping up on long runs !!! col

[Diablo]

Not really surprised you've got problems the carb is way too big

[james lancaster]

what we feeling a 26 dellorto ?

[Diablo]

If you have one it will certainly work better but still big for the kit.

[james lancaster]

what do you think is best ?

[Diablo]

To be fair it will run best with a std type carb a 24mm or even a 20mm.
People don't realise just how well std vespa carbs work. If you can get 20hp from a 210 with a std carb why go big on a DR?
If you really have to use a bigger carb I would have thought av264 and start with an X7 needle. Main jet wise I would imagine start with a 115 and work down.

[col68]

Not really surprised you've got problems the carb is way too big . That was with standard px125 carb !!! changed to 24 mm then 28 when 166 fitted and dynoed on both !!!