why this - why not a CD50 carburettor, even smaller, its a stupid idea, - people think that a smaller carburettor throat means lower consumption, lol
THink of it like a straw that you use to drink a coke, now replace that straw with a garden pipe - get the idea? the straw will suck more fuel for the given vacuum signal because the throat is too narrow. If you put a micrscopic jet and really fat needle in the slide then you basically just closed off the engine air suction - it might rev to 2000 rpm - but thats the max - anything higher will mean
COUGH, paaahleeeze kuch pila do - mar raha hoon.