My trusty Motobecane TM4 had some issues that i’ve pushed off for some time now. The original cylinder was a bit weak and the engine needed some new bearings. The moped has sat many years, only had 1200 km on the odometer when i got it. That has led to condensation in the engine, everything above the oil level was a bit rusty, and especially the ignition side mainbearing.
The engine is easy to work with, took me 5 hours including cleaning and making my own gaskets. New bearings and seals.
My german model had a Gilardoni R2051 cylinder mounted, i’ve never been truly happy with it. I got myself a N2052 model with a bit longer port duration. I like the way it rides now, more power over all. Maybe i’ll upgrade the carb at some time, at the moment it’s a Dellorto SHA 14.12 that i’ve drilled to 13,5 mm venturi.
Check the gallery for all the details:
Nice ! Ive just bought mine tm4 , where did u get all the parts from ? I live in sweden
Hi, try German and Italian ebay pages, or similar platforms.
The Motobecane TM4 has the same UC4 engine and wheels as the Malaguti Fifty,
This MY-FIFTY-STORE store on Ebay sells parts that fit the TM4.
https://www.befr.ebay.be/str/MY-FIFTY-STORE?_pgn=4&_sop=1
https://www.myfiftystore.com/