The engine is the 2.0 litre Zetec. There are 3 versions of this engine available in the USA.
The engine first arrived in the US in the 1995 Ford Contour.
1995-early 1997 cars had the hydraulic valve followers.
In the US it is called the ZX1. In Europe it was called the Zetec E or silvertop as it had a cam cover made of aluminum.
In mid 1997, the hydraulic valvetrain was replaced by mechanical bits and the exhaust cam was fitted with an emmisions facility to alter the cam timing. This ZX2 variant has a black plastic cam cover and a sensor in the cover over cylinder #1. This engine can also be found in the Escort coupes in 1997 to at least 1999.
The third variant is the ZX3 that is found in the ZX3 badged Ford Focus.
There are a couple of warmer mechanical valve train Zetecs found in the Focus SVT and in the Escort ZR2.
My Engine is the ZX1 and it used the Factory Ford contour engine management, fuel rail, injectors, intake manifold , and throttlebody. it had the OBD2 wiring removed.
It ran fine with the engine at the factory static compression ratio of 9.6:1.
It failed to run properly after I had the cylinder head shaved in order to raise the CR to 10.6:1. The ignition curve was no longer appropriate. Hence the switch to twin Weber DCOE 45s. and a Weber Alpha Ignition kit.
The convoluted plastic factory intake manifold as fitted on the donor Ford Contour is reputed by European ford tuners to limit power due to its restrictive nature. It has a single throttle body.
See here, (hopefully) for the English take of the Zetec...http://www.burtonpower.com/tuning-guides/tuning-guide-pages/ford-zetec-e-tuning-guide.html
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