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When Piston meets Mr. Valve ?s.

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Old Jul 12, 2017 | 11:01 PM
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Default When Piston meets Mr. Valve ?s.

I picked up a LQ4 for a good price with issues. Will this is the issue, valve spring broke, the valve stayed open long enough to get punched a couple of times before bending a tick and staying out of the way of Mr. Piston. So, my question is can I reuse this piston with worrying about the piston breaking or coming apart? I buffed the marks smooth with a buffing wheel, everything looks good to me.

Thanks.
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Old Jul 12, 2017 | 11:29 PM
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FYI that's an ly6 piston not an lq4 unless it was rebuilt with ly6 pistons. I'd run it, seems very minor in the pics.
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Old Jul 13, 2017 | 05:55 AM
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That does make sense, it has the Gen lV Rods.

Thanks.
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Old Jul 14, 2017 | 11:07 AM
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Would any one else like to comment on this subject?


Thanks.

Stampede.
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Old Jul 14, 2017 | 01:46 PM
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Smooth any edges out and it'll be fine as long as there are no cracks.

This was from over-revving. No cracks in pistons so they were fly-cut and ran perfect. Yes, those are large indentations from the valves. All 8 cylinders.


Last edited by R6cowboy; Jul 14, 2017 at 01:54 PM.
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Old Jul 14, 2017 | 02:00 PM
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If that's all the damage it did, run it.
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Old Jul 16, 2017 | 07:19 AM
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Thanks guys, I don't want to damage this one, I will never be able to replace it with another 6L.

Thanks.
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