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The 2-Stroke Garage => Turning Wrenches => Topic started by: rodneya on December 09, 2022, 07:24:08 PM

Title: YZ based 300 FI electric powervalve motor
Post by: rodneya on December 09, 2022, 07:24:08 PM
https://www.paddock-gp.com/street-minarelli-presente-son-moteur-a-injection-300cc-2-temps-homologue-euro5/ (https://www.paddock-gp.com/street-minarelli-presente-son-moteur-a-injection-300cc-2-temps-homologue-euro5/)

Anybody understand French better than me?
Looks like a 300cc enduro motor based on the YZ 250. Electric start, electric power valve and throttle body injection to be used in Fantic GP bikes.
This would make a nice upgrade to the x bikes
Title: Re: YZ based 300 FI electric powervalve motor
Post by: sav0r on December 09, 2022, 08:46:11 PM
I am going to copy and paste this from google translate. If you use a Chrome based browser (Opera, Edge, Chrome) you can install this pluging. That said, it probably is only a half decent translation.

QuoteThe all-new 300cc 2-stroke single-cylinder engine with electronic injection and electric start, Euro 5 homologated, has been expressly designed for Enduro racing motorcycles and will equip the Fantic XE300 from July 2023.

Motori Minarelli, after being sold by Yamaha Motor Europe to Fantic Motor, itself a Yamaha partner, continues its work of relaunching and renewing its products. At EICMA 2021, the Italian teams unveiled the concept of the 300cc two-stroke fuel-injected engine, with electric start, based at the time on the Yamaha 250 2T and developed specifically for enduro. A year later, the brand unveiled the official version of the all-new 300cc 2-stroke single-cylinder engine with electronic injection and electric start, specially designed to equip Enduros.

In this final version, the engine has been entirely designed and manufactured in-house by Motori Minarelli, also thanks to the support of the University of Modena in the field of research on the thermodynamics of engine fluids. The design goals of the new MM 300 – 300cc 2T FI Euro 5 are explosiveness and great acceleration, guaranteeing absolute off-road performance.

A decompression system for the reduction of the mechanical moment at start-up as well as an innovative exhaust valve will optimize performance at low and medium revs. Field tested by several Fantic riders, the engine has already shown its efficiency and power, becoming an undisputed protagonist in many races.
Title: Re: YZ based 300 FI electric powervalve motor
Post by: SoCal250 on December 09, 2022, 11:14:10 PM
Pre-production version of the engine (38mm carbureted & no electric start)
https://enduro21.com/en/bikes/latest/pro-bike-davide-guarneri-s-fantic-xe-300-two-stroke