I have the predesessor to the Focus, the ZX2 with the s/r package. Is the Zetec engine in the ZX2 the same as what was put in the Focus? I'm looking to do some engine mods for track days/time trials and haven't found much on the ZX2 and would like to know what, if anything, is the same.
Thanks,
Bob
To my understanding the S/R had the same engine (with addition of the blue valve cover). It has a different ECU, intake and exhaust. The ZX2 and focus engines had different heads, cams and the ZX2 has VCT. I think the block and pistons are the same.
I had heard that you can swap the heads from a Focus to a ZX2 in order to eliminate the VTC on the exhaust cam?
Supposedly the VTC is just for emmisions and robs the engine of HP.
Right now i don't have any class rules I need to follow as I'm using the car for open track days. Just looking for the most economical/practical method to increase HP. However, I will be looking into time trial/racing classes before i make any mods. I would love to eventually do wheel to wheel racing but it will more than likely be cost/wife prohibitive so right now I'm thinking mods are wide open.
The main reason I was looking into swapping heads is that it seems there are more options for the focus as far as cams, valves, ect. on the focus head than the ZX2 head?
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