Cylinder -IMOLA 186 ccm- Lambretta (compression height 30mm)

Lambretta Imola 186 cylinder with diaphragm intake.

Bore 64 mm, stroke 58 mm, Nikasil-coated aluminum cylinder.

Timing: Exhaust 178°, transfer port 125°, intake - diaphragm-controlled, advance 26.5°.

Piston with 30 mm compression height for 115 or 116 mm connecting rods.

The layout of the Imola is strongly based on the TS1, so the diaphragm intake ensures good filling in the lower and middle speed range. The Imolas offer enough meat on the exhaust and overflow sealing surfaces for further tuning measures. Reso systems such as the MZ30 or TSR Evo fit here, as do box systems such as the bgm Big Box or Big Box Sport.

With the bgm Big Box or Big Box Sport, the whole thing goes more in the direction of touring, which means that longer gear ratios can also be used. The whole thing then takes place at a moderate speed level, but has the advantage of significantly earlier power in the band.

Conclusion: Baby TS1, BUT the timing should definitely be measured and you should be prepared for the fact that it may have to be adjusted. In addition, the combustion chamber volume of the head must be determined and possibly increased in order to build a reliable engine suitable for touring. Especially in combination with a 60 mm instead of 58 mm stroke, the compression can increase to such an extent that it can lead to major engine damage.