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Toyota swapped the dual-row timing chain used in older engines for a single-row chain with plastic guides in 1983. The new system reduced drag on the engine but introduced a new maintenance problem. After about 100,000 miles (160,000 km) of operation, the chain may stretch to the point that the hydraulic-operated chain tensioner cannot take up ...
Cutaway view of Variable Valve Timing with intelligence on a ZR engine in Techniquest Glyndŵr. VVT-i, or Variable Valve Timing with intelligence, is an automobile variable valve timing petrol engine technology manufactured by Toyota Group and used by brands Groupe PSA (Peugeot and Citroen), Toyota, Lexus, Scion, Daihatsu, Subaru, Aston Martin, Pontiac and Lotus Cars.
Toyota claims it will have a maximum thermal efficiency of 38 per cent. This 1.3-litre petrol engine is employing the Atkinson cycle like hybrid-dedicated Toyota engines. The maximum torque is lesser, but, this time, the maximum output is not reduced. Valves are driven with Variable Valve Timing-intelligent Electric VVT-iE. The intake port has ...
The Toyota GR engine family is a gasoline, open-deck, piston V6 engine series. The GR series has a 60° die-cast aluminium block and aluminium DOHC cylinder heads.This engine series also features 4 valves per cylinder, forged steel connecting rods and crankshaft, one-piece cast camshafts, a timing chain, [1] and a cast aluminium lower intake manifold.
Toyota Corolla Cross 2ZR-FXE Hybrid engine (2023) The Toyota 2ZR-FXE is a 1.8 L (1,797 cc) Atkinson cycle variant of the 2ZR-FE. [9] It has the same bore and stroke, but the compression ratio is increased to 13.0:1, and the inlet valve closing is late-staged. The net result is that the engine has a greater effective expansion than compression.
The 3RZ-FE is an interference engine with a timing chain reported to last 150,000 miles. [4] The cylinder head is composed of aluminum alloy and the intake manifold is made from aluminum. [5] 3RZ-FE in a Toyota Tacoma. Applications: [5] 1995–2004 Toyota Tacoma; 1996–2000 Toyota 4Runner; 1994–1998 Toyota T100; 1995–2002 Granvia; 1995 ...
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[15] [16] [17] For example, the NZ engines are using timing chain to connect the crankshaft and camshafts, while the Mitsubishi 4G1x engines are using the less durable timing belt. Visually, this engine looks similar like the NZ engines such as the pulleys position and mechanically also share similarities such as the same bore x stroke size ...
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