In 1984 the Saab ”B202” engine was introduced, that pawed the way for the modern turbocharged 4-cylinder engine. 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.
Downsizing as we know now means that a smaller engine has the same power and torque characteristics as a bigger naturally aspirated one, but still with the lower fuel consumption and exhaust emissions from the smaller one.
The engines cylinder volume was 1.985cc and the new cylinder head had 4 valves per cylinder. The engine management system was a combination between the new Bosch LH-Jetronic and the Saab APC-system with knockregulation. This engine was introduced in the Saab 900 T16 Aero ( SPG on the US-market ) and later in the Saab 9000.
The maximum power was 160-185hp and the maximum torque was 255-273 Nm. Thanks to it´s engine characteristics and special exhaust note, the Saab B202 today has a cult status among the enthusiasts.
Produced 1984-1993 in this vesions:
- B202I – 2.0 16v, fuel injection, 115bhp (C900i, 9000i)
- B202S – 2.0 LPT, 150bhp (C900 LPT)
- B202L – 2.0 FPT, 175 / 185 bhp (C900 T16)
- B202R – 2.0 FPT, 204bhp (9000 Carlsson)
Saab’s B202 engine is one of the longest-lasting performance four-cylinders of all time. Bottom ends have proved to last a million miles with only regular maintenance. Head gaskets are more prone to failure than timing chains.
In 1985, The Saab 900 Turbo received the 160-horsepower, 16-valve, B202-spec engine, with the top-of-the-line SPG model getting unique cosmetic enhancements. Saab only offered the SPG in Special Black with tan leather interior; early examples have black ground-effect skirts while later 1985 models sport the gray panels used until the end of production