Ninja
v-spec
nova
in that order. I have had great success with the os based engines over the past year or so. I used to be a die hard nova fan, but thier preformance and reliability has let me down recently. The Ninja is a very solid engine with a smooth powerband and awesome fuel economy. The v-spec is an awesome engine, and I have yet to experience the longevety issues that everyone claims. 9 gallons down the road and my v-spec is running strong. Bearings and rod were replaced at around the 5 gallon mark, nothing else. The new nova engines look very good, but thier extensive break-in period and high price tag turn me away.
