The cylinder head is made of a light, strong aluminum alloy with very good cooling performance. Camshafts are made of specially Solid metal and so are driven by a timing belt. The 2JZ-GTE motor is supplied with 4 valves for each cylinder: two consumption valves and two exhaust valves. JDMBUYSELL https://brooksaqyks.blogdigy.com/not-known-facts-about-jdm-toyota-2jz-gte-vvti-for-sale-built-2jz-gte-42030840