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 Szentgotthárd engine plant in Hungary with the introduction of the DOHC version. GM do Brasil at São José dos Campos, GMDAT at Bupyeong and GM North America at Toluca also build these engines. Design 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 share their basic design with the larger Family II engine - for this reason some consider the Family I and Family II to be the same series and instead use the terms 'small block' and 'large block' to distinguish between the two. Over the years there has been overlap between the two types as the smallest capacities of the Family II have also been manufactured with larger capacity versions of the Family I block. 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. SOHC 1.0 The version has a bore and a stroke. 1.2 There are two iterations of the 1.2-liter Family 1 engine. As originally introduced it was called the 12ST (also A12ST and S12ST in versions for the Austrian, Swiss, and Swedish markets), it used a bore and a stroke to produce a displacement of . This version, only carburetted, was used in the Opel Corsa. In around 1990 a new, version with bore and stroke, a narrower bore version of the existing 1.3-litre version, displacing , replaced the original design. This was also available with single-point fuel injection and with catalytic converters. 1.3 The version has a bore and a stroke. 1.4 The version has a bore and a stroke. 1.6 The version has a bore and an stroke. 1.8 The version has an bore and an stroke. Applications: Chevrolet Corsa Chevrolet Montana Opel Meriva Fiat Palio Fiat Siena Fiat Strada Fiat Idea Fiat Punto Fiat Stilo SPE /