I currently drive a 2005 Rotax Max FR125 engine, and soon the first ever Rotax Max Challenge will be held in my country. I have recently rebuilt the engine, and in my opinion it runs very well (easily revs up to 13,800rpm), however most of the competing drivers will be running the new EVO engines.
While I have considered purchasing a new EVO engine, I am hesitating to do so since the X30 engine just got a local importer, so I’m hoping that once it will gain some traction I will switch over to it.
Given that my current engine will not be competitive against the EVO package, and most of my current parts (such as the exhaust) will not be legal for the competition, I am starting to consider the EVO upgrade kit. With this upgrade kit, will my engine be as competitive as the new EVO engines, even though I will be running the old block? I have heard a lot of people at the track saying that the EVO has a significant bhp jump over the non EVO engine, however I’m not sure if it is strictly attributed to the updated carburettor, ignition and exhaust (the parts that I will get in the EVO package), or if the engine block itself is more powerful.
Any feedback would be appreciated. Thanks!