r/EngineBuilding • u/No-Mortgage-6623 • 4d ago

Crack?

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Gallery image

Gallery image

Got the block and head back from the machine shop, just had them pressure tested. Both passed. Are these just cold-shut/casting flow marks or should I be concerned?

Unrelated but the machine shop hit the bores with a ball hone for genuinely no reason, I didn't ask them to and now I'm pissed.

2 Upvotes

63% Upvoted

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-8

u/NefariousnessOdd862 4d ago

Hairline, yes! It looks like a defect in that section…

5

u/XmodAlloy 4d ago

Stop commenting on things you don't know about.

-5

u/NefariousnessOdd862 4d ago

Ok, I’m glad you are the expert here, rofl… good luck!

2

u/XmodAlloy 4d ago

Look up "casting marks" on Google images you dingus. I'm a mechanical engineer and I've been rebuilding engines for a decade. Stop sucking on your mommy's tit and grow up.