This engine is probably the most known engine, given the fact that it existed way before Sierra’s in older Ford models and was in Sierra’s closer to a decade. The displacement ranges from 1.3 to 2.0 liters, the 2.0 liter was also available as injection (EFI) in the later years. This engine is often called Pinto or SOHC (single over head camshaft). This engine is a 4 cylinder gasoline engine, from factory most of the time carbureted. The engine it self is sluggish in the stock form, especially if we compare to any newer engines, but they have great potential and they give reliable transport with quite minimal maintenance.
This engine has an interesting reputation, since it is the most, if not the only actually tuned engine out of all the base model Sierra’s engines, and achieves the best power too when built. The base model Sierra enthusiasm has funnily enough divided into two groups. The fan boys of OHC, and the fan boys of DOHC. The DOHC engine was introduced in late 1989 and replaced the 2 liter OHC engines, while the smaller displacement OHC engines got replaced by the 1.6i and 1.8i CVH engines.
Common issues
Cosworth YB engine’s bottom-end actually is based on the OHC, and many of the parts are interchangeable. Of course, the Cosworth parts are rare and most sought after since they are an actual upgrade and they’re not expensive. The only real difference is, Cosworth Sierra’s use a 16 valve cylinder head with two camshafts, and none of the top-end parts can be interchanged between the engines. The Cosworth YB engine’s cylinder head has different flanges for exhaust and inlet manifold too.
Stockmann turbo 1.3 liter
Tuning
Naturally aspirated
Turbo