Vespa Largeframe Engine Tuning

Created by Dietrich Limper at 14:02 on February 6, 2023

In this 8-part tutorial series series is the continuation of our series about the building a largeframe engine. Now André shows, on the basis of his more or less "normal" tuning engine, the influence of the main components on the power delivery and their coordination with each other. After each change to the engine, the power is measured again on the test bench and the various alternatives are compared. The series was filmed in English, but of course German subtitles are available and can be activated on YouTube.

In the end, André has found a total of almost 6 hp more power and even compares the respective power gain with the price for the decisive component. Anyone who wants to gain an insight into André's sewing box should not miss this series.

Many frequently asked questions are answered, for example:


Episode 1

Intro and preparation

Episode 2

What are the benefits of an ignition with variable ignition timing?

Episode 3

Is there a manual for adjusting the carburettor?

Episode 4

What are the benefits of different diaphragm plates and V-Force?

Episode 5

Exhaust test of all available SIP Road versions and comparison with some competitors.

Episode 6

Measuring the timing of the 2-stroke engine

Sequence 7

Revision of the exhaust port and the cylinder timing

Sequence 8

The final performance check

Video: Vespa Largeframe Engine Tuning

Photo Gallery: Vespa Largeframe Engine Tuning

Vespa Largeframe Motor Tuning
Dietrich Limper
Dietrich Limper

Dietrich Limper works as an editor for SIP Scootershop and also writes for local and national publications. When he's not geocaching, he enjoys the amazing antics of Bayer Leverkusen.