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<blockquote data-quote="AvgDadsGarage" data-source="post: 233422" data-attributes="member: 7129"><p>So I recently got into rebuilding dirt bikes. It’s always been something I wanted to do since I was little and I finally bought my own house with a 1 1/2 car garage so I spent the past multiple months renovating one side into my dream shop/garage.&nbsp; Got me a 1996 RM125 that didn’t run, and stripped it down, figured out the connecting rod bottom bearing where it connects to the crank, bearing shattered and grenaded in the engine. Made a dang mess of the piston and head which I can replace without much of an issue. I found a place to rebuild the crankshaft but I assumed I would need the case repaired as well. I have had two places now tell me that I should be fine to just leave the gouges in the crankshaft area of the case. The gouges are not protruding out where it would catch the crank as it rotates but I assumed it would cause lubrication issues but now I’m thinking I am completely wrong. The gouges are decent but they haven’t created cracks or ruined the mating surfaces which I was told means you can just leave it, rebuild the crankshaft and slap it back together. Just looking for more opinions of leave it or replace/fix it. Thanks. Picture of the piston attached for fun.</p></blockquote><p></p>

[QUOTE="AvgDadsGarage, post: 233422, member: 7129"] So I recently got into rebuilding dirt bikes. It’s always been something I wanted to do since I was little and I finally bought my own house with a 1 1/2 car garage so I spent the past multiple months renovating one side into my dream shop/garage. Got me a 1996 RM125 that didn’t run, and stripped it down, figured out the connecting rod bottom bearing where it connects to the crank, bearing shattered and grenaded in the engine. Made a dang mess of the piston and head which I can replace without much of an issue. I found a place to rebuild the crankshaft but I assumed I would need the case repaired as well. I have had two places now tell me that I should be fine to just leave the gouges in the crankshaft area of the case. The gouges are not protruding out where it would catch the crank as it rotates but I assumed it would cause lubrication issues but now I’m thinking I am completely wrong. The gouges are decent but they haven’t created cracks or ruined the mating surfaces which I was told means you can just leave it, rebuild the crankshaft and slap it back together. Just looking for more opinions of leave it or replace/fix it. Thanks. Picture of the piston attached for fun. [/QUOTE]

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