| Mazda C engine | |
| Manufacturer: | Mazda |
| Configuration: | Inline-4 |
| Fueltype: | Gasoline |
| Fuelsystem: | Single Nikki or Hitachi carburetor |
| Coolingsystem: | Water-cooled |
| Displacement: | 985cc 1272cc 1415cc 1490cc 1586cc 1796cc |
| Bore: | 702NaN2 732NaN2 772NaN2 782NaN2 |
| Stroke: | 642NaN2 762NaN2 782NaN2 832NaN2 942NaN2 |
| Valvetrain: | SOHC 8-valve |
| Power: | NaN0NaN0 |
| Torque: | NaNkgm |
The C family was Mazda's first large piston engine design. It is not certain whether Mazda has a name for this collection of engines, and it is uncertain precisely which ones are related.
The 9851NaN1 PC engine featured a NaN2NaN2 bore and stroke. It was an eight-valve SOHC design and was designed for rear wheel drive longitudinal applications. The PC produced and in the export market 323.
Applications:
The 12721NaN1 TC had a NaN2NaN2 bore and stroke; a bored and stroked version of the PC. Used in the 1970, 1973, and 1977 Mazda Familia, and the 1979 - 1984 Mazda Bongo / Ford Econovans as the smaller engine option, the larger being the 1.6 L Mazda NA engine. For 1977 a new, prize-winning lean burn version of the TC was developed for the new FA-series Familia, using a carburetor with an EGR valve.[1] Thus equipped, the TC weighs 127kg (280lb).[1]
Applications:
14151NaN1 NaN2NaN2 - A larger-bored version of the TC, used in the 1978-1980 Mazda GLC. Produced 700NaN0. This was also used in the 1979-1984 E1400/Econovan and for the new 1984 Ford Econovan as the base model engine. In continental Europe the Econovan/Mazda E-series continued to use the UC engine until at least 1990, in a version which produces 48kW. 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.
The original 1966 Luce 1500 used a 14901NaN1 SOHC inline-four with square 782NaN2 bore and stroke. This engine, also used in the Capella and Grand Familia for a short while, was replaced by the stroked NA engine (below).
Applications:
The 15861NaN1 SOHC NA engine was a UB, stroked to 832NaN2. JDM output was 1000NaN0 at 6000 rpm, with maximum torque of 14kgm at 3500 rpm. US-spec was 700NaN0 at 5000 rpm, with maximum torque of 11.3kgm at 3500 rpm with a single Nikkei carburetor. The rest of the world received a 750NaN0 version. Later on, this engine was also referred to as H6.
Applications:
A stroked to 942NaN2 1796cc version of the UB/NA, retaining the same 782NaN2 bore, was used in the 1968-1972 Luce 1800 and the 1975-1979 Mazda B1800s for the US market. In Canadian market B-series trucks, it was installed as early as 1970. Output for the 1972 Luce was 1000NaN0 JIS at 5500 rpm and 15.5kgm at 3000 rpm. Export model outputs varied, with European market models claiming 1040NaN0 DIN (all other figures remaining the same).[3]