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Gm family 1 engine

The meaning of «gm family 1 engine»

The Family 1 is a straight-four piston engine that was developed by Opel, a former subsidiary of General Motors and now a subsidiary of PSA Group, to replace the Opel cam-in-head engines for use on mid-range cars from Opel/Vauxhall. Originally produced at the Aspern engine plant, production was moved to the Szentgotthard engine plant in Hungary[2] with the introduction of the DOHC version. GM do Brasil at São José dos Campos,[3] GMDAT at Bupyeong and GM North America at Toluca also build these engines.

The Family 1 engines are inline-four cylinder engines with belt-driven single or double overhead camshafts in an aluminum cylinder head with a cast iron engine block. GM do Brasil versions were also capable of running on ethanol. These engines are sometimes referred to as "Small-block" engines by enthusiasts; in contrast to the larger Family II engines which are sometimes referred to as the "Big-block" engines.

GM do Brasil specializes in SOHC, petrol-powered and FlexPower (powered with ethanol and/or petrol, mixed in any percentage) engines. GM Brasil also made 16-valve versions of the 1.0 engine. The 1.0 L 16v was available in the Corsa line-up from 1999 to 2001.

The 999 cc (61.0 cu in) version has a 71.1 mm (2.80 in) bore and a 62.9 mm (2.48 in) stroke.

The 1,195 cubic centimetres (72.9 cu in) version was used in the Opel Corsa.[4]

The 1,297 cc (79.1 cu in) version has a 75.0 mm (2.95 in) bore and a 73.4 mm (2.89 in) stroke.

The 1,389 cc (84.8 cu in) version has a 77.6 mm (3.06 in) bore and a 73.4 mm (2.89 in) stroke.

The 1,598 cc (97.5 cu in) version has a 79.0 mm (3.11 in) bore and an 81.5 mm (3.21 in) stroke.

The 1,796 cc (109.6 cu in) version has an 80.5 mm (3.17 in) bore and an 88.2 mm (3.47 in) stroke.

The SPE / 4 or (Smart Performance Economy 4 cylinders) engines are an evolution of the Econo.Flex engines that were made in Brazil at the Joinville plant. There are two available displacements: 1.0 L and 1.4 L. They feature an SOHC head with 2-valves per cylinder, and is fed by a multi-point fuel injection system, which allows it to run on either E100 (pure ethanol) or E25 gasoline (standard in Brazil). Major differences between previous engines include reduced friction, lowered weight, individual coil-near-plug ignition, and a new cylinder head design.

This was the first engine in this family, featuring a Lotus-developed 16-valve cylinder head and a cast-iron cylinder block which was essentially the same as in Opel's 8-valve engines. C16XE was available only in Corsa GSi, model years 1993 and 1994. C16XE was not yet badged Ecotec, and for later model Corsas and Opel Tigras it was replaced with X16XE Ecotec engine. The main difference between C16XE and X16XE Ecotec is emission control, C16XE lacks EGR and AIR-system, although the cylinder head is designed to enable these features. Other differences between C16XE and later versions of the engine include intake manifold, C16XE has a plastic upper intake manifold, which was replaced with a cast aluminium manifold, and fuel injection system, C16XE uses Multec fuel injection with MAF sensor and later models used Multec fuel injection with MAP sensor. Also, while C16XE had its own exhaust front section design, for X16XE it was replaced with a front section used also in Opel Astra, probably as a cost-saving measure.

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