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Old 06-14-2021, 08:06 AM   #14
Mister Moose
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Join Date: Jun 2020
Location: Hartford area, CT
Posts: 312
Default Re: Is my block dead?

The sand blasting or wire wheel gets you a clean surface, the V-out of the groove improves mechanical adhesion, but the V should extend only partially into the block thickness. Your best repair is to do both. A die grinder with small abrasive bits will clean up the crack area to bare metal with no sand, and give a cleaner surface than a wire wheel. You want bright metal clean, and you want grip. Clean and epoxy a bit past the visible end of the crack as well.
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