Some came with confined creation head P8R which had 33mm intake valves (normally found on VTEC B-series) vs 31mm ingestion (non VTEC B series), and the head experienced an 84mm shrouding vs 81mm for all other B series heads. The B16B is like a shorter stroke equivalent of your B18 https://httpswwwnwjdmmotorscompro79012.theblogfairy.com/38693229/5-simple-techniques-for-jdm-honda-b16b