B16A SiR 2nd technology may be the Japanese Model from the B16A, mounted with new pistons, considerably less dynamic consumption camshaft, sixty mm throttle overall body size, and the next compression ratio of 10. 247BAD-ZN claimed: hey there person think it would be CTR head whether it is stamped b16b. https://honda-b16b48147.blogdomago.com/30685534/rumored-buzz-on-jdm-honda-b16b