Re: hairline crack in block....help!

Posted by Fish'n Jim On 2016/10/14 20:22:17

Is that another crack in the top of the cylinder wall at "9:30"?
You probably need to dye penetrant test or magnaflux the whole enchalada. (takes care about the ones you're not seeing.)
It's a crap shoot welding cast in an engine block in critical areas. Any "good" engine builder could tell if it's repairable or not. From your request, I'm assuming your guy has stopped work and given up, not a good sign.
I'd be looking in parallel for another low miles motor/block, just in case. You get into the cost of repair vs replace. And there's no guarantee cast repairs will hold. No telling if another vintage block will be any good either, if it's a common problem one.