Optimax 225, bent connecting rod

[keepfishin2]

First time posting. I have a 2002 Optimax 225 with 200 hours. boat ran great last trip out. A couple of days later I started boat at dock and instantly motor starting knocking really bad. Started taking apart air intake plenum to inspect pistons and rods, and i noticed a few ounces of water came out of bottom of air intake. after full inspection found out I bent # 6 connecting rod. I guess the motor Hydrolocked? ......Can anyone pass along their experience or wisdom as to where or how water can enter cylinder, other than my head gasket which i already examined. much appreciated.

 

[wired247]

Re: Optimax 225, bent connecting rod

The exhaust. If you have a blown out rear plate exhaust gasket or lower gasket you can draw water into the lower cylinder (#6). Even a lower main seal. ll have water on the other side.

 

[keepfishin2]

Re: Optimax 225, bent connecting rod

The exhaust. If you have a blown out rear plate exhaust gasket or lower gasket you can draw water into the lower cylinder (#6). Even a lower main seal. ll have water on the other side.

would I get water in all cylinders? Is there anyway to inspect exhaust gasket with out hauling boat?

 

[wired247]

Re: Optimax 225, bent connecting rod

Your'e going to have to pull the powerhead and disassemble the motor.