Lambretta 230cc Monza kitted bike on our dyno

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Last week our friend Harald from Aachen came to play around on our dyno.He was not 100% happy with the carb setting and wanted to test the slow running and improve throttle response.

These are the parts that are fitted to his engine:

Cylinder: Monza 70mm bore

Crankshaft:BGM 60/110mm

Carb: Mikuni TMX 30

Exhaust: JL-KRP3

Port timings : 186°/126°

Squish: 1,7mm

Easy to spot that there was room to improve the jetting. The blue curve shows the difference.

Thanks to a different slide (richer) and to a altered needle position power and torque low down have been increased further. And the over rev potential is much better too.

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