Occasionally, a rattle in the entrance on the engine doesn’t necessarily signify the VCT gear is worn out. The timing chain information about the SR20 and KA24 engines is known to loosen and rattle, knocking over the valve deal with since the timing chain moves beneath it. Rust is unavoidable https://bookmarksoflife.com/story4239828/a-review-of-jdm-nissan-sr20-turbo-engine-for-sale