Did you guys get the 'Sigma' over there? They were a 4 cylinder 16v DOHC all aluminium engine available in 1.25, 1.4, 1.6 and 1.7 litres.
They sold tons of them over here. They came in loads of Fords from the late 90's and I believe the very last of them were in the KA+. I believe Mazda fitted them to the Mazda3 and 121 also. Some had variable timing, most fixed cam. There was a spicy 155bhp version of the 1.7 in the Ford Racing Puma that would rev to well over 7000rpm.
I may be wrong, but I'm sure the 1.6 4 cylinder Ecoboost was derived from the Sigma too.
Early models were badged 'Zetec S' on the rocker cover, then they changed it to 'Zetec SE' and later versions just got called the Duratec or Duratec Ti-VCT if it had variable timing.
The things were utterly bulletproof!
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My Mother gave me her 2003 Ford Focus back in 2010. It was a 1.6 'Zetec SE' with 79k on the clock. I fitted a set of Shawspeed SS4 cams with some adjustable cam pulleys, some ARP big end bolts and a 1.7 VCT inlet manifold with a 2.0 Zetec throttle body and the thing gained 60% more power and used to sing to 7,800rpm.