I didnt mean that the R/S ratio has a big role in the revability of the engine. It does have a roll though, the lower R/S ratio of the GSR and ITR is why honda gave them block girdles from the factory. R/S ratio does contribute to the overall stability of an engine at high revs. It is a small and no doubt negligible point, but it does contribute in a small way. The well balanced nature of the b16 is what really makes it a good candidate for high revs. I was merely using it as a way to show how well the engine was designed in factory form.