Alvis37

I wanted to start a discussion about the RB26 engine and its performance capabilities in modern technology. While advancements in technology have undoubtedly enhanced the potential of this iconic engine, some users have mentioned concerns about its longevity when pushing it to higher horsepower levels, typically around the 700-800 crank horsepower mark. Even with the implementation of a dry sump system to address potential oiling concerns, it seems that the RB26 starts to exhibit certain flexing behaviors that may not be conducive for long-term reliability at these power levels. Despite the application of block braces and other modifications aimed at pushing the limits, it appears that Nissan engineers originally designed the RB26 block with a targeted power output of around 600 horsepower for group A racing, with a 1.2x safety factor. Of course, the specific power output required for individual applications may vary, and some enthusiasts may have different opinions on what they consider "a lot" of horsepower. However, it's worth noting that even reaching 600 horsepower from a relatively small 2.6-2.8L engine is quite impressive. To put it into perspective, this level of performance is comparable to vehicles such as the A45S AMG, which currently holds the record for the highest specific output engine in a production car. It's essential to acknowledge that achieving higher power levels beyond the design limitations may require additional measures and considerations. If you're looking to maximize performance while maintaining long-term reliability, it may be necessary to incorporate regular rebuilds or derate the engine to prolong its lifespan. I'm curious to hear your thoughts on this matter. Do you agree that the RB26 engine's design suggests a power output limit of around 600 horsepower, with additional factors impacting longevity? Or do you have a different perspective on the subject? Let's discuss and share our experiences and insights.