Would this be worth doing?

[Nerdy Norm]

I'll shortly be taking delivery of a Series 2 LI 125, which I believe is completely standard. Eventually I plan on making a few upgrades along the same lines as I've done on my Series 3 (BGM RT195, big bore exhaust, bigger carb, etc.).

Until funds allow, I'm thinking of fitting some bits I've got in my "take-off box", which from memory are a standard Series 3 LI 150 top end, a cheapo AF Clubman and a 22mm Jetex carb.

My first question is would these parts from a Series 3 fit a Series 2 without modification, and the second is would I gain any meaningful performance improvement, or should I just leave it as-is until I can run to some "proper" upgrades?

Thanks in advance!

[coaster]

I'd say it is definitely worth doing, it still won't be 'quick' but it'll be significantly better than a 125 and yes those parts will fit.

[Nerdy Norm]

Thanks Coaster - I'm not expecting miracles, but I was just thinking that those parts must make some kind of difference, so it's better that they're on the scooter than sitting in a box in the garage.

[shocky]

I think that would be a nice upgrade for relaxed use it might be undergeared but it depends were you going to use ot most groups are often slower as is around the city , just check you have a 150 slide in your carb you might find the 200 slide boggy mid range and be tempted to under jet the main

[Nerdy Norm]

Thanks Shocky. The rides I'm likely to go on with this scooter certainly won't involve any motorway use, so I should be OK.

The Jetex came from Rimini, and was supplied as set up for a Casa 185 kit, so not sure what's inside it. Is there an easy way of identifying it?

[Nerdy Norm]

To answer my own question, I've just opened the Jetex - it has the slide without a cut-out, which I believe is the 200 version. Do I need to replace that with the cut-out version for the 150?

The jets currently fitted are 140 main, with the other two being marked 50. Could someone give me a ballpark set of jet sizes to start with on a standard 150 top end with an AF Clubman?

Sorry for all the questions, just trying to be as frugal as possible with these upgrades!

[Chris in Margate]

Somewhere around 110 main and then up or down from there.

[Nerdy Norm]

Thanks Chris, I'll get some jets ordered.

Anyone know about the carb slide (with or without cut-out)?

[shocky]

It is the cut out type but you can try the 200 one personally id jet it as per gp150 and go down on the main if needed , but jetting for one scooter to another can vary

[Nerdy Norm]

Thanks Shocky.

According to Beedspeed's chart, the GP150 used a 118 main jet. With a Clubman exhaust, isn't it normal to have to increase the main jet size a couple of points or so? In which case, 120 is quite a lot higher than the 110 Chris mentioned as a starting point.

On the same chart, it shows the pilot jet as being a 45. Since the one already fitted in my carb is a 50, I should also change that, right?

Beedspeed chart: http://beedspeed.com/html-pages/Lambret ... etting.htm