I never thought I'd start a thread in this section
I've got a rattle on the SR20DE that occurs after 2,500rpm and sounds like it's from the top of the engine. It only does it on light throttle at a constant speed and goes away when accelerating/deceleration. Sounds too high up and not deep enough for a big end rattle.
I've had a look at the cams and they seem ok.
Do little ends ever go in these engines?