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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 ...
K – On-demand Atkinson cycle in non-hybrid engines; S – D-4S Gasoline direct injection; T24A-FTS T24A is a 2.4-liter engine, as denoted by the "24" in "T24A" F – Normal cylinder head DOHC; T – Turbocharged; S – D-4S Gasoline direct injection; Some engines don’t share the same displacement as with the one found in the engine code.
In a piston engine, either a timing belt (also called a cambelt) or timing chain or set of timing gears is a perishable component used to synchronize the rotation of the crankshaft and the camshaft. This synchronisation ensures that the engine's valves open and close at the correct times in relation to the position of the pistons.
Output is 150 hp (112 kW; 152 PS) at 4800 rpm with 177 lb⋅ft (240 N⋅m) of torque at 4000 rpm. This engine features twin, chain-driven balance shafts. It has four valves per cylinder and DOHC. Valve adjustment is by shim over bucket. The 3RZ-FE is an interference engine with a timing chain reported to last 150,000 miles. [4]
The ZR engine is a family of straight-four 16-valve all-aluminum and water cooled gasoline engines with a die-cast aluminum block and variable valve timing developed by Toyota Motor Corporation, produced from 2007. Engines displace from 1.6 to 2.0 liters.
A timing mark is an indicator used for setting the timing of the ignition system of an engine, typically found on the crankshaft pulley (as pictured) or the flywheel. [1] These have the largest radius rotating at crankshaft speed and therefore are the place where marks at one degree intervals will be farthest apart.