Atomiser differences

[stonerosesmod]

I say chaps, whats the difference between an AV266 and an AS266 atomiser in a phbh carb?

[DaveTomo]

http://www.bristollambretta.com/dellort ... eedles.htm about halfway down

[stonerosesmod]

Cheers Dave,a mates bought a second hand muggy 200 engine and the jetting looks fine when i checked the carb today.It starts but is really lazy revving and dripping fuel from exhaust manifold so im gonna check the timing next.

[paul213]

The av atomiser is 2mm shorter at the top where it enters the venturi of the carb . this has the effect of weakening the mixture as the needle sits further into the atomiser .so an AV266 will give a richer mixture against an AS266 at the same clip position on the needle.
hope this helps
Paul