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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 11-07-2015, 02:42 AM   #11
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A ball hone will NOT work for that, it hones EVERYWHERE and not just at the tight spots. It is for deglazing ONLY, not straightening the cylinder.

Odds are very high that small an amount honed will in no way clean up the top ring wear 100%. Most visible scratching requires at least .005" to pick up all of it. Some (a lot) will go away at .003".

You don't have to get rid of all the wear but desirable. I've run plenty of engines really hard with slight amounts still there and they ran like bats out of you know.
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Old 11-07-2015, 08:10 AM   #12
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Thanks amc. I found the stock specs for the engine in here. I must have been sleeping the first time I searched. I started the thread because I couldn't find any specs for piston clearance. I should be between .0007" and .0015" piston to wall clearance, so it's going in to get punched out .020" over. I was beyond the service limit when I pulled it apart...
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Old 11-10-2015, 05:34 PM   #13
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If you are racing I would NOT go that tight with the next one, I would not go below .002". You loosen up a bit when you rev it all the time.
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Old 01-18-2016, 10:48 PM   #14
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Have you checked your piston to wall clearance to see what it is and how much you can hone it on a n.a basic rebuild nothing making more power I wouldn't add any more piston to wall check you piston to wall and i would give it a light hone and try not to take anymore metal out, basically just enough to brake the glaze and give the new rings a chance to seat
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Old 01-20-2016, 03:39 PM   #15
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I would read your piston package for clearances , they are all slightly different from one manufacturer to another and there different per application ie street , race , boost etc

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Old 01-24-2016, 11:27 PM   #16
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X2, the different alloys used for pistons often determines the clearance needed.
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