If it's the old 1.6 Zetec you have my sympathies. Build a 2 litre engine and put tiny bores in it to make a poverty spec model out of it. Sometime I'll give you a ride in the Westfield so you can sample what the 2L one's like when breathed on a little!
The newer (all ali) Ford engines are quite good, I reckon. Emma had a 1.25 16v Fiesta and it was a cracking engine. Really free revving and plenty of poke. Not too noisy and pretty frugal too. Quite possible the larger capacity ones weren't as good though.
Whilst I find most Ford mechanicals are at least tough and quite well put together, if agricultural, it doesn't extend to the rest of the car, I'm afraid. Well, maybe the agricultural bit does. Still, when the bodies rot away or get bent they provide a good source of parts for us kit car types.
Never driven a Ford of the focus era. Can't say my life feels incomplete as a result. They should bring back the Escort Mk 2 IMHO, with a Duratec I4 engine.
When you service it, the Zetec wants a 30 viscosity oil ideally. Some of the early Zetecs get problems with lifters pumping up on thicker oil, although mine seems happy on VX Semi.
Kevin