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Discussion Starter #1
So my machinist gave me back my block a couple weeks ago.

While painting it I found a crack between the threaded head stud hole, and the water jacket.

The crack runs right next to a mig tack, which was most likely a poor attempt at fixing a previous crack.

I don’t ever recall seeing the mig tack there before handing the block over.

So obviously the crack is an issue. But how big of an issue is it?
After over a thousand in machining, Is the block a throw away?
127596
 

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did you get back the same block ??
can you ID it ??
did you do any marking on it before taking it in,
like main cap #s or anything else ??
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a crack check/dye check/magnaflux is usually at the top on a 1000$ machinist bill..
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are there any more cracks / imperfections in the block ??
is it a std. bore or .060 over ??
how much to fix by a pro-welder, that's done it ??
can you save it for a mild grocery getter build ??
 

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Discussion Starter #4
Yeah, fortunately it’s the same block.

I probably shouldn’t have posted this hastily. It was a bad day.
But anyways. Builder said crack didn’t show up on magnaflux due to it being along a weld seam.
He’s going to helicoil, pin, drill some unrelated water jacket holes, and deck, all on his dime and asap. He’s a good man.

I just hope through heat cycles it holds up.
I would feel better if it wasn’t a performance build.
And I hope it’s a factory weld, and not done by a PO. Welding cast iron can be tricky and coin toss.
 
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