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post #1 of 16 (permalink) Old 05-20-2017, 05:24 PM Thread Starter
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Damaged Piston Head

Hi im new here, im not gay.. My problem is

1, I had timing chain come off, and notice my rockers were broke on my valves,, so i took off the cylinder head cover off and notice one of the valves snapped off and left a chip in the center of the piston head about 1/4" deep/wide,, which also damaged the head cover,,

im getting a used cylinder head from a junk yard.

and new chain, etc

will my piston be ok with a small knick in it?

oh its a 2007 2.2 ecotech
If not how complicated is it to replace it in the position im in now..

I cant sand it down its a lil to deep i think

thanks

Last edited by Ben Baker; 05-20-2017 at 05:25 PM. Reason: added info
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post #2 of 16 (permalink) Old 05-20-2017, 05:49 PM
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It could be fine but it's cheap and easy enough to replace the piston, don't even have to pull the engine out to do it. As long as the cylinder is fine then put in a new piston and new head and call it a day. Rod bolts are torque to yield though so make sure you replace those too
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post #3 of 16 (permalink) Old 05-20-2017, 06:17 PM Thread Starter
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ok thanks, so i need to remove the oil pan to remove the pistons is this correct?

and do i need any special tools to replace these? are used pistons with rods connected ok to use or do i need new?
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post #4 of 16 (permalink) Old 05-20-2017, 08:12 PM
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Assuming you aren't going to be adding a supercharger or turbo to it then a used stock rod and piston would be just fine. Only special tool you need is a ring compressor but even those are pretty cheap. And yes, you have to remove the oil pan to swap it out
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post #5 of 16 (permalink) Old 05-21-2017, 02:42 AM Thread Starter
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ok thank you
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post #6 of 16 (permalink) Old 05-21-2017, 04:51 AM Thread Starter
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ok, hopefully last question but probably not,

I see on ebay they sell new piston heads, would these have rings already installed??

or if I bought a used one is replacing the rings necessary?

and on the youtube videos they say it needs rehoned is this so?

Last edited by Ben Baker; 05-21-2017 at 05:58 AM.
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post #7 of 16 (permalink) Old 05-21-2017, 07:52 AM
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If your rod is good I would just replace the piston and rings, this way your rod bearing will match the crank. Mark it when you remove it so you don't change it orientation even though I think they only go in one way. Honing is only necessary if you have a ring ridge at the top of the cylinder. If you can't feel it by touch you're good to go.

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Last edited by Coby7; 05-21-2017 at 07:55 AM.
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post #8 of 16 (permalink) Old 05-21-2017, 08:20 AM
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good point about the rod, and the new piston head might come with rings but that is something you would have to verrify

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post #9 of 16 (permalink) Old 05-21-2017, 10:53 AM Thread Starter
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ok thanks,, im trying to get this oil pan off now been working on it for two hours it wont bundge
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post #10 of 16 (permalink) Old 05-21-2017, 11:10 AM
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Double check that all of the bolts are out then pry on it lightly. It doesn't use a gasket, it is siliconed on so it's not just going to pop off it will take some light prying
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