2007 saw a major shift in the Toyota Tundra Engine lineup. Toyota went from two engines to three: the 5.7L 3UR-FE, the 4.7L 2UZ-FE, and the 4.0L 1GR-FE The last generation of Toyota Celica engines saw to 1.8L motors.
The eight cylinder 5.7L Toyota Tundra Engine is the largest Toyota engine in use in North America. This motor is DOHC with 32 valves, and makes use of dual VVT-I, which means the valve timing is variable both on the intake and exhaust valves. The bore size is 94mm and the stroke is 102mm. Should you need to replace this motor in your vehicle, I strongly recommend you buy a used engine, since a new one will set you back just under $20,000. There is unlikely to be a strong remanufacturing market for this engine, since the magnesium alloy head is difficult to work with. This engine is produced at Toyota’s plant near Huntsville, AL.
The 2UZFE is a 4.7L Toyota Tundra engine also produced at the Huntsville plant. It also has a 94mm bore, but the stroke is reduce to 84mm. Again, we have a 32 valve DOHC. There is not dual VVT-I on this engine though – only variable valve timing. The 2UZFE utilizes a cast iron block and aluminum heads.
The 1GR-FE is a six cylinder, 32 valve DOHC 4.0L engine. This engine uses VVT-i, which mean that the valve on the intake cam is variable. Further, this engine cannot be bored out. Toyota has gone to an elliptical shape intake port. They claim that this is to reduce fuel consumption via more evenly distributed fuel, but the cynic in me feels that this is merely an attempt to make the engine nonrebuildable.
Getting into Toyota Celica engines, we first look at the 1ZZFE. This engine was built for US vehicles in Cambridge, Ontario, Canada and in Buffalo, West Virginia. It is a 1794 CC, 16 valve DOHC motor, with a bore of 79mm and a stroke of 84mm. All 2000-2005 GTs have the 1ZZFE. This engine utilizes a timing chain instead of a chain. A timing chain is considered to be of higher quality than a belt.
The upgrade of Toyota Celica engines is the 2ZZGE. Also a 16 valve DOHC engine, the bore is 82mm and the stroke is 85mm. Japanese produced only, this engine utilizes a 11.5:1 compression ratio requiring gasoline with a 91 octane minimum. This is a dual VVTL-i system, which means that the valve lift varies according to need on both the intake cams and the exhaust cams, greatly increasing performance.
Both Toyota Celica engines could be mated with either an automatic or manual transmission, though only the GTS could get the six speed manual transmission.