sleeve cracked or the block bore that contains it. Would like to see a pic of that crack, sleeves just do not crack normally. If the block cracked around the sleeve, not repairable, needs to be replaced. Do not attempt a weld repair....

Out here that repair you had done would have ran well over 9 grand, I have reservations about jobs of that type done at such a low cost. 5 grand raises all kinds of alarm bells!