Engine Bore Chamfered Edge

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Oct 22, 2022 | 03:23 PM

Dalton Tallent

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5th Wheeling

Joined: Sep 2022

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Engine Bore Chamfered Edge

I am working on rebuilding a 460 and I don't know if this area on the bore is a problem. It is the outer edge (chamfered edge) of the pistons bore. It is in a couple of the bores. Just need help determining if this is a problem or normal.

Oct 23, 2022 | 08:07 AM

mark a.

Lead Driver

Joined: Mar 2004

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The first thing to do is run a bore gage reading in .0001" through the cylinders and see how much skirt clearance, taper and out of round they are.

Oct 23, 2022 | 10:06 AM

Dalton Tallent

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5th Wheeling

Joined: Sep 2022

Posts: 40

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The bores are in range. Just want to know if that marking is original or wear. It seems machined.

Oct 23, 2022 | 08:15 PM

DaveMcLain

Cargo Master

Joined: Oct 2020

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That chatter stuff is normal as are the gigantic chamfers on some of the bores. It won't hurt anything simply because it is way above the ring travel.