1968 Li125 S
After surfing around the internet and reading magazines and books I narrowed my tuning choices down to either an Imola185 kit or an AF Rayspeed TS1 225. The Li125 casings have a smaller spigot opening (approx. 70mm) that will not accept the large spigot of a 225 barrel. The amount of parts that are necessary are almost the same for either conversion although the TS1 conversion would also require new cases (see pics below). New parts will include
My first purchase has made my choice for me. I bought a set of GP case from Scooter Cafe for only $150. I received the main casing, mag side flange, and chaincase in under 4 days. The quality of the castings is very good with only a little bleed at joints. The casings came with 4 studs at the rear wheel & no brake cams, 3 studs at the mag side flange, and two studs on the chaincase side. Also the gearbox retainer plate was included. The only strange thing is there is no serial number on these casings - I doubt the Department of Motor Vehicles would approve but they'll never see it.
The transfer openings on the GP200 casings are larger than my Li125 casings. The crankcase mouth is about 74.5mm in diameter. Hopefully this will be a good base to up the power from the standard 7hp of the Special
Below is a shot of the original LI crank mouth still in the bike while I was replacing the original piston.