![]() All 2.2 engines have cast iron blocks, use a timing belt, and are non- interference engines. The bore spacing is 96 mm (3.78 in), limiting the potential for increased bore diameter. It is a siamesed engine: there are no coolant passages between cylinders. Developed under the leadership of Chief Engineer – Engine Design and Development Willem Weertman and head of performance tuning Charles "Pete" Hagenbuch, who had worked on most of Chrysler's V-8 engines and the Chrysler Slant-6 engine, it was introduced in the 1981 Dodge Aries, Dodge Omni, Plymouth Horizon and Plymouth Reliant, and was produced until 2000. The first version of this engine family was a normally aspirated 2.2 L (134 cu in) unit. It was the first Chrysler engineered four cylinder engine since the Chrysler flathead four cylinder was discontinued in 1933. After its launch in 1981, it became the basis for all Chrysler-developed 4-cylinder engines until the Chrysler 1.8, 2.0 & 2.4 engine family was released in 1994. The vehicle is road tested to confirm normal operation and a service sticker is affixed to the engine noting the date of belt replacement and the vehicle mileage.The 2.2 and 2.5 are a family of inline-4 engines developed by Chrysler Corporation originally for the Chrysler K- and L-platforms cars and subsequently used in many other Chrysler vehicles. ![]() ![]() Upon completion of the installation, the engine crankshaft is turned by hand 720 degrees and the correct position of the timing marks on the crankshaft and the camshafts is confirmed.Installation of the new timing belt includes all of the above steps, performed in reverse, following strict guidelines to assure camshaft and crankshaft (and balancing shaft, if equipped) are in perfect alignment after tensioner has been set.If the engine cooling system thermostat is only accessible with water pump replacement, the thermostat should be replaced as well. If replacing the water pump, do so at this time, and of course drain the cooling system first.Remove timing belt tensioner and idler pulleys. Lock camshafts, as required, and note position of camshaft timing marks. Remove all accessories interfering with the removal of the timing belt covers.Once the engine is cold, set the crankshaft to top dead center with the number one piston on the compression stroke.How do mechanics replace the timing belt?Įngine designs vary, and thus the replacement procedure will vary, but broadly, the procedure is as follows: If your car has an interference engine, replacing the timing belt according to the maintenance schedule will minimize the chance that a belt failure will cause engine damage. These engine designs are referred to as interference engines. On some engines, if the timing belt has jumped, the pistons and valves can collide and there will be noise and damage. Should the belt jump, the engine will run poorly and perhaps not at all. After many tens of thousands of miles, the teeth can wear or break, or the belt can stretch, thus causing the belt to jump position on the crankshaft or camshaft gears. The molded, reinforced teeth on the timing belt engage gears on the crankshaft and camshafts. Occasionally, timing belts can break, or skip, while the engine is running. Engine stops abruptly or will not start.Your vehicle owner’s manual should state the specific service interval. If an engine is equipped with a timing belt, the timing belt must be replaced at the service interval specified by the vehicle manufacturer regardless of whether or not any problem is visible, typically in the range of 60,000 to 90,000 miles.
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