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ZETEC Performance (2000-2004) The place to chat about any 2.0L Zetec engine performance, tuning and exhaust related upgrades.

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Old 10-03-2012, 08:33 PM   #1
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Zetec in ZX2 the same as ZX3?

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.
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Old 10-03-2012, 09:37 PM   #2
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No.
Some parts crossover but not the good parts.

Check out Teamzx2.com and zxTuner.com. You'll find lots of parts and help there specific to the zx2.
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Old 10-04-2012, 03:03 PM   #3
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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.
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Old 10-04-2012, 06:51 PM   #4
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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.
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Old 10-04-2012, 07:22 PM   #5
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Yes you can, but that also requires custom tuning to disable the VCT Solenoid and fix the errors from the location change of the Cam Position Sensor.

Are you subject to class rules?
Can you post those rules?

It'd be easier to direct you in what changes to make if we first know what limitations your subject to and what your goals are.
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Old 10-08-2012, 09:31 AM   #6
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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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