Lambretta 230ccm Monza from Aachen as guest on the P4

Last week Harald was a guest on our Amerschläger P4 to check the carburetor set-up of his 225 Monza and to optimize it if necessary.

Here are the key data of the engine:

Cylinder: Monza 70mm bore

Crankshaft: BGM 60 / 110mm

Carburetor: Mikuni TMX 30

Exhaust: JL-KRP3

Steering angle: 186 ° / 126 °

Crush dimension: 1,7mm

The diagram shows the change from the red to the blue curve.

By using a thicker slider and changing the needle position, more pre-resol power and more overrev could be realized.