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Discussion Starter #1
So I have a 2000 Focus ZX3, and need to do the timing on it sometime soon. Figured why I was in there I would swap cams to better OEM cams. I know the ZX2 intake cam is great, but witch exhaust cam is better?

Thoughts please...
 

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Discussion Starter #4
Tuning is easy... Let me rephrase the question...
I don't want to use the ZX2's exhaust cam as I know it wont work. But you have the Zetec Focus, SVT Zetec Focus, Cougar, and the Contour... So witch one of them would be best to use...
 

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SVT Focus uses VCT on the intake so it doesn't work either. The cams may well have more number on them but the intake being VCT is a problem.

Cougar and Contour both use the same engine as ZX2 which was simply a buzzword for that zetec with exhaust VCT engine in an Escort. It is a zetec E or the same as the Focus except no VCT on Focus. The VCT there is for emissions only, it replaces the EGR system.

Stock low dog zetec E cams run around 205 dur. @ .050" or so and lift around .350", or NOT hi-perf numbers.
 

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Vince your Moderator
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I would get a good Focus Zetec head , surface it about .030 , get a set of comp stg3 cams with adj cam gears and go with that

Tom
He'd need better than OEM valve springs for the Stg.3 cams correct Tom?
 

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Thats What She Said
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He'd need better than OEM valve springs for the Stg.3 cams correct Tom?
As Tom already said he would, however Comp advertises that they work with stock valve train. in part they have longer duration and not much more lift that stock. the other manufactures go with more lift and a little more duration.

if you compare the .050" lift duration the comp cam stage 3 are the longest. Crane or Crower have less duration but much more lift.

Thus also Comps claim of "drop in" and no need to clearance for the head for the lobes.
 
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