Any advice for the following setup:
150 bored to 175
150 Gearbox
22mm Dellorto
42mm Clubman
Cheers.
Jetting Advice For Lambretta 175 & 22mm Delllorto
These can be hard to give advice for, as there are a few differant barrels in 150 format (varying port timings), and then when bored to 62mm the exhaust port is a little restictive compared to the size of cylinder it has to scavange, unless its widened... Also the choice of air box and air filter play a big part....but my normal starting point for this set up is a 22mm jetted for a 200 with a 120 or 122 main ....if it tends to bog down a little low down I usually put the 150 slide back in (number 2 slide =150 )...( number 1 slide =200 )....but try and fit a GP type air box....It normally makes jetting a little easier.....The early LI and TV type air boxes make it a little harder to get it right.... Hope this is of some help.... But this is only a starting point... 
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sean brady scooters
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amongst many other things........a lot depends on the so called 150 gearbox..............
hope its not the SX 150 type...........for your sake..........
hope its not the SX 150 type...........for your sake..........
Sean Brady Scooters - 01765 690 698
Good point Mr Brady, would you reccommend an LI 150 Gearbox..??
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sean brady scooters
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what we really need here is a lot more basic info........
li 150 gearboxes are good of course ,but .......and so often with type of question /post
its as you say not ever quite so simple...................
for eg............this so called 175 could be a bored out 150 cc barrel...........that has also been previously a bored out 125 barrel................
li 150 gearboxes are good of course ,but .......and so often with type of question /post
its as you say not ever quite so simple...................
for eg............this so called 175 could be a bored out 150 cc barrel...........that has also been previously a bored out 125 barrel................
Sean Brady Scooters - 01765 690 698
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Jet200
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Gentlemen, thanks for your input and advice. I'll start with the easier stuff i.e. jetting & slide, but as it's still running ok (not great) I'll leave the checking of the type of cylinder, port timings, exhaust port and air box for another day (when I can clear some room in the garage!) Be aware that if I have to check all of the above items . . . . . . I shall be back seeking what to do next!! 
Incidentally Sean, I'm certain I do have the Li150 gearbox set up in it but what are the problems with the SX150 box?
Incidentally Sean, I'm certain I do have the Li150 gearbox set up in it but what are the problems with the SX150 box?