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Saab Offers Redesigned, Lightweight Engine for 1981




The Saab two-liter overhead camshaft engine has been in production since 1972, with more than half a million units produced so far. It has been even further developed for 1981 to meet both current and future demands on emissions control and fuel economy. The 1981 Saab engine -- above in its turbocharged 135 bE: version -- is about 25 pounds lighter tha- ts :redecessor, w: reduce the overall weight of the 1981 Saab cars by between 45 and 90 pounds. The 1981 engine, designated the H-engine, has been simplified on a number of vital points. For example, the auxiliary shaft (idler shaft) has been eliminated The distributor is now mounted directly on a new cast aluminum camshaft cover and is driven by the camshaft, while the water pump is driven by the alternator belt. For 1981 the Saab Turbo engine also incorporates a new smaller turbine, which gives better throttle response, especially at low speeds; and an integrated wastegate (charging pressure control valve), which is controlled by the pressure in the intake manifold instead of by the pressure in the exhaust manifold as in the past.
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