The 1UZ-FE is a 4.0-liter V8 engine developed by Toyota in the late 1980s. It was first introduced in the Lexus LS400 (1989) and quickly gained a reputation as one of the most reliable engines ever made. Built with an aluminum block and heads, a forged crankshaft, and advanced engineering for its time, the 1UZ offers smooth performance with impressive longevity.

The Toyota 2ZZ-GE is a 1.8-liter inline-4, naturally aspirated engine co-developed by Toyota and Yamaha. It was produced from 1999 to 2006 and is famous for its VVTL-i system (Variable Valve Timing and Lift with intelligence), which allows it to rev up to 8,200 RPM while maintaining reliability.

To determine the first load, an allowable stress of 0.5N/mm² in the compression direction or 0.2N/mm² in the shear direction can be taken. More detailed information is available upon request.