From time to time, a rattle within the entrance with the engine doesn’t automatically suggest the VCT gear is worn out. The timing chain manual on the SR20 and KA24 engines is understood to loosen and rattle, knocking to the valve deal with since the timing chain moves beneath it. https://paxtonbxelo.blogkoo.com/a-review-of-jdm-nissan-sr20-turbo-engine-for-sale-51584978