cuchulainn said:
i though that 1.25 engine in the fiestas was a honda engine
The advanced
Zetec-SE was developed in collaboration of
Yamaha under the
Sigma codename. It ranges in size from 1.25 L (1249 cc) to 1.7 L (1700 cc). It is extremely different from the
Zeta engine - the intake and exhaust are even on opposite sides.
This engine is sold under the Sigma name in some regions, while
Mazda uses the
MZI name. It is also sold as a
crate engine by Ford Power Products as the
ZSG. Rather confusingly, this engine has been renamed "Duratec" for use in the Mk II Ford Focus for Europe, being available in 1.4 L and 1.6 L versions. This incarnation also spawned a 1.6 L derivative with
variable valve timing, known by Ford as "Ti-VCT" (Twin Independent Variable Camshaft Timing).
In
2000,
Ford of
Brazil developed a cheaper version of the Zetec-SE engine, to compete with the classic
VW AP engines. This
Zetec-Rocam is an 8-valve
SOHC instead of
16-valve DOHC design and the block is made of iron instead of aluminum. Also, the camshaft is driven by a chain instead of a belt. As a result, this engine exhibits rougher behaviour, producing more vibration and noise.
On the other hand, it has a superb torque output thanks to the addition of the Rocam (rollerfinger camshaft) feature. It is also a much smaller engine than the SE version, which allowed it to be installed in the
Ford Ka, replacing the
Endura-E which was considered underpowered and outdated.
In
2003, the Zetec-Rocam engine was introduced in Europe, but labeled as
Duratec 8v, for the SportKa and StreetKa models. Later a 1.3 L version was also released as an option for the standard model, but the European versions of the engine are produced in the South Africa plant.
In
October/
2004 a newer
bi-fuel version was introduced labeled "1.6 L Flex", capable of running on both petrol and alcohol, even mixed at any proportion. This version also featured "Compound High Turbulence" chambers, as used on the
CHT engine.
