172 malossi jetting

[stanspeed]

running a 172 malossi with a pm tuning exhaust and a 28mm phbh delorto and no bottom end tune can any one advise a good jetting and air mixture screw setting running with foam air filter.

[stanspeed]

running 50/1 .main jet 122,pilot jet 55,slide 40,atomiser av266,needle not sure but on second clip and 1 and half turns on mixture screw runs very rich need some help to see if this can be improved . this is the jetting set up as it was when i bought me vespa.so if any one can help will be greatfull.

[drunkmunkey6969]

This is just 'ball park' as i'm going off memory, i can be more specific if i look at a few old dyno results, but i think we would jet something like that, more like this:

130 main
X7/X13 - 2nd clip
55 pilot
AV264
40 slide
screw 1.5 turns
Oil ratio @ 3%

Hope that helps as a starting point.....

[stanspeed]

cheers m8.