information on elusive late 2003 roller rocker head

[enviri]

yes, they do spit out like a 2zr, either by misshift or hitting 7k rpm+ regularly by being tuned.

There's a company that races with these engines that make stoppers like the SR20 boys that are always selling out.

the company even says, it greatly reduces the chances but it still can happen!

yes, i feel the old one is more robust.