page_title: Saab H engine
section_title: B202 and B212
hierarchical_section_title: Saab H engine / B202 and B212
caption_attribution_description: 1991 Saab B212 engine, 2.1 16v Source: http://www.surfacezero.com/g503/data/790/medium/DSC00859sm.jpg Photo by Jacco, used with permission. This work has been released into the public domain by its author, Jacco. This applies worldwide. In some countries this may not be legally possible; if so: Jacco grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.
context_page_description: The Saab H engine is a redesign of the Saab B engine, which in turn was based on the Triumph Slant-4 engine.
  Despite the name it is not an H engine or horizontally opposed engine, but a slanted inline-4. The H engine was introduced in 1981 in the Saab 900 and was also used in the Saab 99 from 1982 onwards.
  H stood for high compression, higher compression was part of the update from B to H engine. It continued in use in the 900/9-3, 9000, and 9-5. The 2003 GM Epsilon-based 9-3 switched to the GM Ecotec engine, leaving the 9-5 as the sole user of the H engine. The H family of engine was used in the first-generation 9-5 until it was discontinued in 2010. The tooling and know-how was sold to BAIC.
  The latter B2X4 and B2X5 engines have in practice nothing in common with the early B engines except cylinder spacing.
  All versions feature a grey cast iron block and an aluminum head with a single or double overhead chain driven camshafts. SOHC engines use two valves per cylinder and DOHC versions use four valves per cylinder with a pentroof chamber, the valve angle being 22 degrees from vertical. All engines use flat inverted bucket type valve lifters, hydraulic in the case of DOHC engines.
context_section_description: In 1984, Saab added a 16 valve cylinder head with double overhead camshafts. They retroactively renamed the 8-valve version the B201 and used B202 as the name of the new multi-valve unit. Another notable addition to the B202 was hydraulic valve lifters and Ecopower ("ep" in Italy, "(900)S" elsewhere), with a pre-heated catalytic converter for reduced emissions.
  In 1991, Saab introduced a 140 bhp (104 kW) 2.1-litre naturally aspirated 16 valve version of this engine, with an increased displacement of (2.1 L; 129.3 cu in (2,119 cc)) and a resulting name of B212. The inlet manifold was enlarged and redesigned for better and greater flow. The intake manifold and the head from the 2.1-litre constitute a well-known replacement for 1985-1993 16 valve, 2.0-litre turbocharged Saabs. Power increase is modest at stock boost but becomes much more evident at higher boost levels.
  Engine builder John Nicholson also developed a Formula Three engine from the B202, for use in a Reynard 853 chassis. This version one of the first to use Saab's direct ignition system (SDI) and produced 165 PS (121 kW) at 5600 rpm. Its other strength was high power in an unusually broad powerband for a naturally aspirated racing engine.
caption: 1991 Saab B212 engine. It is longitudinally mounted in a SAAB 900.
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