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A pair of poppet valves bent by collision with a piston after timing belt failure. The engine was running at 4500 RPM. In interference engine designs, replacing a timing belt in regular intervals (manufacturers recommend intervals ranging from 60,000 to 104,000 miles) or repairing chain issues as soon as they are discovered is essential, as incorrect timing may result in the pistons and valves ...
The 1.5 L 1A was produced between 1978 and 1980. [6] All variants were belt-driven 8-valve counter-flow SOHC engines with a single, twin-barrel downdraft carburetor.It used Toyota's Turbulence Generating Pot (TGP) lean combustion system to meet Japanese emissions standards at the time with only an oxidation (2-way) catalyst. [7]
The Toyota E engine family is a straight-four piston engine series, and uses timing belts rather than chains. The E engines were the first multi-valve engines from Toyota designed with economy, practicality and everyday use in mind (rather than performance). Like many other Toyota engines from the era, the E engine series features a cast iron ...
Another cause for timing belt failure is improperly adjusting the timing belt on engines with a manual tensioner (1989 to very early 1990 models only) or improperly adjusting the balance shaft belt. Because this is an interference engine, damage will occur if the timing belt fails. Another common occurrence is that the balance shaft's oil seals ...
[11]: 94–95 [12]: 250 If the timing belt is not replaced in time and fails and the engine is an interference engine, major engine damage is possible. The first known automotive application of timing belts to drive overhead camshafts was the 1953 Devin-Panhard racing specials built for the SCCA H-modified racing series in the United States.
Initially belt-driven OHC non-interference engines (except the VVT-i version which is an interference engine), multivalve DOHC (except the 1G-EU SOHC 12 valve engine) and variable valve timing were added later during the production run. The 1G-GEU was Toyota's first mass produced four-valve twincam engine. [1]
The 3.3 has a timing chain, and is an interference engine meaning that the valves will collide with the pistons in the event of a timing chain failure. Vehicles using the 3.3 include: 1990–1993 Dodge Dynasty, Chrysler New Yorker, Chrysler Imperial, (replaced the 3.0 L Mitsubishi 6G72 engine) 1990–2010 Chrysler minivans
Introduced in 1984, the High Pressure turbocharged version of 2L-TE features ceramic pre-combustion chambers. [58] In this engine, the fuel is injected with a high pressure system. Bore and stroke remains the same, 92 mm × 92 mm (3.62 in × 3.62 in) for both however compression is increased to 21:1. [88]