Saab motor i volvo
A major redesign of the H engine came in in the form of the new B for the Saab The B featured an increase in stroke from 78 mm 3. 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.
Genuine Replacement Vehicle Parts and Accessories
Power increase is modest at stock boost but becomes much more evident at higher boost levels. Instead the distributor is located at the front of the cylinder head and directly driven by the camshaft, while the integrated waterpump was replaced with a separate unit to the rear of the engine. The B engine became a very popular engine swap for Vauxhall and Opel Astra, Calibra, Cavalier and Vectras with the GM T-body platform, in Scandinavia in the mid s—the engine uses the same mounting positions due to sharing the same platform.
They retroactively renamed the 8-valve version the B and used B as the name of the new multi-valve unit. Another notable addition to the B was hydraulic valve lifters and Ecopower "ep" in Italy, " S" elsewhere , with a pre-heated catalytic converter for reduced emissions.
BR was briefly available in the Aero U. B was in production in the Saab until , when it was replaced by B The B and B are regarded by engine tuners as the preferable engine for performance tuning over the later B and B engines as the internals are of a higher strength. All versions feature a grey cast iron block and an aluminum head with a single or double overhead chain driven camshafts.
In , Saab added a 16 valve cylinder head with double overhead camshafts. It was introduced in and unlike the B engine it did not have the central shaft which used to power the distributor, oil- and coolant pump. This meant that a new chain drive for the camshafts was required to reduce the length of the engine. In an intercooled version of the turbo engine also became available, it produces PS kW; hp at rpm.
The B engine was available with natural aspiration in , and in the form of 2.
Popular Parts
Its other strength was high power in an unusually broad powerband for a naturally aspirated racing engine. Valmet Automotive in Uusikaupunki also planned a downsized 1. The longer stroke B was last produced in , that being the last year for the model. B is the original H engine with two valves per cylinder and a single overhead camshaft. It was available with PS 74 kW; 99 hp at rpm using a single carburettor , PS 79 kW; hp at rpm using a dual carburettor, PS 87 kW; hp at rpm using Bosch K-Jetronic fuel injection and a turbocharged , fuel injected version with PS kW; hp at rpm.
Unlike the previous B, the block was no longer angled, but straight, something that made it unsuitable for the model with its gearbox under the engine, built into the engine oil sump. This new engine, the B, was based on the 's B, but in order to make the engine fit in the the engine had to be shortened. With this increased stroke also came a new engine block with increased deck height to make sufficient room for the increased stroke length without being forced to use shorter connecting rods , and in-block counter-rotating balance shafts for reduced vibration NVH.
There are two generations of B engine, one made from , the other from to The later motors had a revised oil sump system, head, timing cover, and different bell housing pattern. The intake manifold and the head from the 2.
In , Saab introduced a bhp kW 2. The B was selected as one of Ward's 10 Best Engines for and The B was still being produced in , but for the new generation Saab being released in a new 2. The latter B2X4 and B2X5 engines have in practice nothing in common with the early B engines except cylinder spacing. Downsizing was made by using a narrower cylinder bore.
H stood for high compression; higher compression was part of the update from B to H engine. The inlet manifold was enlarged and redesigned for better and greater flow. Despite the name it is not an H engine or horizontally opposed engine , but a slanted inline The H engine was introduced in in the Saab and was also used in the Saab 99 from onwards.
One such prototype engine is displayed in the Uusikaupunki Saab museum. The H family of engine was used in the first-generation until it was discontinued in The tooling and know-how was sold to BAIC. All engines use flat inverted bucket type valve lifters , hydraulic in the case of DOHC engines. The later models had lightened internal components to improve efficiency and fuel economy but limit the total power output when the engine's software is revised to increase the boost pressures and specific power output.