Ultimate Racing M4R V2.0 nitro off-road engine
Modelix Racing have introduced the new Ultimate Racing M4R V2.0 nitro off-road engine. The 4-port power plant utilises a tuned crankshaft and offers linear power supply at both low and high RPM combined with improved fuel mileage, exceptional performance and reliability. The main changes from the previous version are the new cooling head design as well as the last evolution of the carburettor which is even easier to tune and more stable at different RPM compared to the previous version. The cooling head is also used on the M5 engines and it is keeping the engine cooler for improved performance at high temperatures. Its lightweight design ensures a low overall centre of gravity while the diameter of the head’s central bore has been reduced for more reliable temperature measurement as the new design ensured temp guns will not touch the glow plug. The composite carburettor of the M4R V2.0 is made by Novarossi and of a reverse type with a sliding throttle valve. It provides high idle stability, more precise tuning and higher mid/top range power.