this engine still runs strong (can hit 45MPH+ with 5+ people in boat), but i took it in for a tune-up and the mechanic couldn't do a compression check because the threads in cylinder 3 were bad. he replaced the head and found water on the bottom 2 cylinders. he then said the engine block is cracked and i need a new engine.<br /><br />how else can i tell if the block is cracked? i checked the compression last season and it was 135, 145, 150, 150. <br /><br />bluewater, check your mail!Originally posted by myoutboards:<br />but why do you think the block is cracked? do you have water in the cylinder? is your compression bad? what makes you think that this is happening?<br /><br />what made you think something was wrong in the first place to take it to the mechanic to check it out anyways?<br /><br />give us some information and we can help you...immensly! [/QB]
he said that the compression was good and he replaced all the gaskets that can cause water to get into the cylinders. he checked the gas tank and everything and said it's probably a cracked cylider in the engine block.<br /><br />so, instead of taking the whole engine apart (they charge $80/hr), they siad it'll be cheaper to replace it or rebuld it for $4000.<br /><br />hmmmmmm... what else can cause water to get into the cylinders even after all the gaskets were replaced?Originally posted by qab999:<br /> could be a blown head gasket, if he replaced the head did he run compression after he replaced it?-- or did he just say you got water in your cylinders your screwed?
that's exactly what i'm planning on doing. the mechanic said it's basically running on 2.5 cylinders and the it'll run like this until it just dies out. i guess i can run it hard for a few more seasons (if it doesn't die first) and then part it out and replace it. <br /><br />i checked on ebay and based on their prices, it looks like i won't get too much if i part it out. oh well, i hope i can get about $500 from it after i spend about $5K on a different engine.<br /><br />thanks for the help, guys!Originally posted by roscoe:<br /> DO NOT stick $3000 or $4000 into that engine.<br />If it runs as good as you say, keep running it.<br />When it stops performing as it should, part it out and replace it.
Originally posted by myoutboards:<br /> remember, water can also enter a water cooled 2 stroke from the exhaust side. i had this happen once ona 50hp omc.<br /><br />my exhaust cover/block-off/plate/thingy was so corroded, it was allowing h20 into the cylinders and eventually killed the motor.<br /><br />water is never good ina motor.<br /><br />ever<br /><br />check the compression yourself. a new guage is only 24 bucks at any good hardware or auto parts store, or at sears.com