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Old 07-20-2019, 08:25 PM   #1
t-up
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Default Lifter bore scratches

Do these scratches look like something I should be concerned with? Discovered them after getting block home from machine shop. I brought it back to the shop they acted like it was not big deal, honed the bores, said it was fine. Solid Roller Lifters
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Last edited by t-up; 07-20-2019 at 09:24 PM.
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Old 07-20-2019, 09:24 PM   #2
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Default Re: Lifter bore scratches

Not only scratches, but also appears to be a lot of pitting too.
They may create excessive leakage around the lifter.
What type of lifter will you be running?
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Old 07-20-2019, 09:25 PM   #3
t-up
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Default Re: Lifter bore scratches

New have not been installed. Crower Cutaway Severe-Duty Roller Lifters 66291H-16
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Old 07-21-2019, 08:23 AM   #4
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Default Re: Lifter bore scratches

For no surprises check lifter size with mike and bore size with bore gauge or telescoping gauge. If they used a ball brush hone, all that happened was the surface got scratch and bores got bigger.
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Old 07-23-2019, 05:03 PM   #5
Frank Castros
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Default Re: Lifter bore scratches

We know the condition and the correction, but what is the cause?
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Old 07-28-2019, 12:49 PM   #6
Larry Hill
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Default Re: Lifter bore scratches

Vertical lines = trash
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Old 07-28-2019, 01:17 PM   #7
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Default Re: Lifter bore scratches

www.lifterboretools.com has a kit for most popular V8 engines to sleeve lifer bores with bronze bushings. Not only restores your lifter bore to correct tolerance, but can restrict excessive oil flow. Kits have a reamer, install tool and bronze lifter bore bushings.
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