Evinrude rebuild

mutz

Cadet
Joined
Apr 15, 2005
Messages
7
I have a 98'Evinrude 30 hp elec. start that was running rough. I took the engine apart and found the bearings smashed. I have to replace the crankshaft and was wondering if anyone new if there are other manufactures of crankshafts other than going to evinrude. Also a place that would hone the cylinders (plateau preferable). Or would I be better off buying a new powerhead. Any info would greadtly be appreciated since this is my first attempt at anything like this.<br />Thanks
 

Mark42

Fleet Admiral
Joined
Oct 8, 2003
Messages
9,334
Re: Evinrude rebuild

Bearings usually go because of lack of lubrication. BUT, the cylinder usually gets really badly chewed up and causes the piston to seize before the bearings go. Which brings some questions to mind:<br /><br />- What is the condition of the cylinder walls? Bad, deep scoring or surface scuffing?<br /><br />- What caused the bearings to become smashed? Lack of lube, or a mechanical failure like the race cracked causing bearing failure. If only the bearing is bad, it is more likely a mechanical failure do to metal fatigue or defective needle in the bearing itsself. Then the crank can be cut and proper bearings ordered to fit.<br /><br />- Do you have any clue what might have caused the failure? <br /><br />My opinion is if the rest of the motor seems in good shape, order the parts for a rebuild. If not, buy a new powerhead. Either option is more economical than a new outboard. Your local dealer can probably handle having the crank cut and checked for true/straightened if need. <br /><br />See what the other more experienced folks here say.
 

mutz

Cadet
Joined
Apr 15, 2005
Messages
7
Re: Evinrude rebuild

Thanks for the response. The cylinder walls don't look bad at all, but I'm not an expert. If you look at the crankshaft you can see a bearing pattern on it. I have no idea what may have caused the failure. The one piston does have a slight score in it.
 
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