I have a 98 115. There is a small crack in the block near the starbord aft mount point. It's patched with Marine Tex right now, I don't know how long this will last. Is there any repairs for a cracked block, and if I can get it welded, does the engine need to be disassembled?<br /><br />Next question. If I decide to replace the power head, what exactly comes with a rebuilt power head? Is it a simple bolt on and go, or is there more to that?