The reason I ask this question is becuase I usually will buy 4-5 engines for one racing season and it is now shopping time. I used to run NR and have pretty good results with them. It seems for the past few years NR engines and its deritives (JP, RB, MAX etc) quality is getting quite inconsistent. We have guys with 10 years + experience (including myself) will have broken crank, sleeve breakage, piston breakage etc. Something that shud not have happened. I have moved away from NR for last season and stayed with Sirio which is a very good engine (not very popular in the US) and will stay for the time being. Meanwhile I have talked to the guys who raced WC last year and they have good comments on this engine, may be NR is back on track and I will try one since they are still the big brother of 21 engines. With Ninja/GRP and new Sirio models I think this year's engine war will be getting hotter than ever.
Originally Posted by MRX_joe21
It is big difference lol...