LT1 Based Engine Tech 1993-1997 LT1/LT4 Engine Related

New LS7 Lifter Has Pitted Coating In Pushrod Valley?

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Old 05-28-2009, 04:04 PM
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New LS7 Lifter Has Pitted Coating In Pushrod Valley?

Just received a new set of LS7 lifters from Summit but 2 of them look like they have pitted coating in the pushrod valley. Has anyone seen this before? Should I use these or request a new set? I'm really leaning toward demanding a new set becaues I don't want to redo this.

One of the left looks good and the other looks really pitted:

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Old 05-28-2009, 04:29 PM
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Didn't realize an edit caused this to double post so I deleted the first one.

BW Hunter (forum member) stated he didn't think this would matter but would send it back if I'm not satisfied and that he would send it back.

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Old 05-28-2009, 04:36 PM
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Looks like surface rust to me. Does it rub off easily? If it comes off and seems greasy then its just the protective coating. Either way I would send em back. Not worth the risk.
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Old 05-28-2009, 04:54 PM
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It looked like rust at first but with a lupe (sp?) it is some kind of pitted coating. Man, I hate this but I'm going to use it. When I twirled a pushrod inside I couldn't feel any binding. Also, I can barely feel a thing with my finger. I'm getting hardened pushrods so I really don't think it will matter at all. If it can wear out the pushrods then I'll send it to NASA for further testing

Hal

Last edited by Hal Fisher; 05-28-2009 at 05:01 PM.
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