Tmec engine T-MEC is a familiar title to anyone involved in the terraria community back on the forums. As the Terrarian Mechanical Engineering Corps, one of the biggest discussion groups is focused completely on wiring. The greatest farms, engines, and exploits can be found there. So me and a couple other Reddit users have decided to bring it to reddit! The first model was 0.8 L (796 cc) SOHC straight-three engine based on the powerplant of the Suzuki Alto. In 2002, the range was extended to 1.0 L (995 cc) and 1.2 L (1,150 cc) inline-four engines and updated with EGR valve to reduce emission. A new engine plant for the updated model T4 was built.