UC
1,415 cc (1.4 L; 86.3 cu in) (77.0x76.0 mm) - A larger-bored version of the TC, used in the 1978-1980 Mazda GLC. Produced 70 hp (52 kW). This was also used in the 79-84 E1400/Econovan and a short run in the new 1984 Ford Econovan as the base model engine until 1985, presumably to use up surplus engines, the other options being the 1.8 L F8 or 2.0 L FE petrol engines or the 2.2 L R2 diesel engine. In some parts documentations, it is referred to as the D4, however no UC engine block was ever stamped D4. in 1980, this engine (and the smaller TC) was modernized and turned into the new E-series engine, intended for front-wheel drive applications.
Read more about this topic: Mazda C Engine