All gasoline engine models are powered by a 1.4 or 1.6 liter, in line four cylinder, overhead camshaft engine. These engines are either 85 or 98 cu. in., respectively.
The cylinder block is made of cast iron. Each cylinder has individual intake and exhaust ports. The valve lifters are mounted in the head, next to their respective valves and are operated by lobes on the camshaft.
The camshaft is belt driven and housed on the top of the cylinder head. It is supported by five bearings in a cam carrier. Bearing inserts are not used.
The crankshaft is also supported by five main bearings. It is lubricated through oil holed which lead from the main oil supply on the left side of the block. Number five bearing is the end thrust bearing.
The pistons are made of a cast aluminum alloy and incorporate the use of two compression rings and one oil control ring.
The crankshaft also drives, by way of a gear, the distributor and the oil pump. A cam on the shaft of the distributor drives the fuel pump.
Beginning in 1981, the Chevette offers an optional diesel engine. This is a 1.8 liter inline 4-cylinder overhead camshaft engine on which the belt-driven camshaft rides in five bearings. The valves are operated by direct acting rocker arms, while adjustment is manually obtained through lash adjusters on the opposite end of each rocker arm. The cast iron, cross-flow cylinder head incorporates a precombustion chamber which adds to smooth performance and easy startup characteristics.
The injection pump and the oil pump are also driven off of a cog belt by means of the crankshaft. The crankshaft is supported in the cast iron cylinder block by five main bearings with the thrust being taken on the center bearing.