{"id":82924,"date":"2021-10-22T15:46:45","date_gmt":"2021-10-22T15:46:45","guid":{"rendered":"https:\/\/www.secret-classics.com\/?p=82924"},"modified":"2021-11-09T08:20:58","modified_gmt":"2021-11-09T08:20:58","slug":"40-years-of-opel-manta-b-400","status":"publish","type":"post","link":"https:\/\/www.secret-classics.com\/en\/40-years-of-opel-manta-b-400\/","title":{"rendered":"40 Years of Opel Manta B 400"},"content":{"rendered":"\n

At the 1981 Geneva Motor Show, a car debuted that would probably no longer be possible in this form today. A German subsidiary of a major American corporation collaborated with an independent tuning company to create a homologation vehicle for rallying. Nowadays, this chain of words alone rings all the alarm bells among the tie-wearing business economists who now sit in decision-making positions at most car manufacturers. At the end of the 1970s and the beginning of the 1980s, Irmscher had already proven several times that tuning should not necessarily be equated with tinkering. This led to the fact that their products were officially available through the Opel dealer network and special edition models were developed together. On of these was the Manta B i2800.<\/p>\n\n\n\n

Engine with Cosworth cylinder head<\/h3>\n\n\n\n

When the regulations for Group B in the World Rally Championship became known, Opel decided to develop a corresponding car based on the Manta B. This was to succeed the Ascona B 400, which was built according to Group 4 regulations. The greatest success of the Ascona B 400 came just after the presentation of the successor, when Walter R\u00f6hrl and Christian Geistd\u00f6rfer won the world championship title in 1982. Opel originally wanted to use a two-liter four-cylinder engine for the new car. For this purpose, Cosworth developed new 16-valve cross-flow cylinder heads. However, these engines didn’t achieve the desired performance. Since the cylinder heads had already been produced, a new forged crankshaft was designed for the engine block, increasing the displacement to 2.4 liters. This resulted in 106 kW\/144 hp in the road version and more than 184 kW\/250 hp in the competition car. A turbocharger was considered unnecessary.<\/p>\n\n\n

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