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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Cracked crankcase, what should I do?
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[QUOTE="IndyMX, post: 1351546, member: 71057"] Find a welder who can weld aluminum, get an estimate. Compare that against the cost of a new set of crankcase halves (you'll need both, they're machined pairs). Then figure which you could stomach best. I had the balancer gear shatter and come thru the right side case in 3 spots. None critical, so I had it welded. It's still holding up fine after a year. Also you will need a new gasket set in either case. Plus you may as well put a new piston, pin, circlips and rings in it. Might be a good time to do some other routine stuff too.. How are the valves?? Just figure this way. After you get done with the work, your bike is going to be fresh. If you fix it up, spend the cash, you will have a good running bike that you will likely get a few years of enjoyment out of. On the otherhand, if you just sell it and start over, you never know what kind of other problems you might be taking on. While you have it apart, I would also find out what caused the kick starter to crack the cases. This is not normal. I'm guessing the previous owner had it apart, and didn't get something on quite right and caused excess pressure on the starter gear. Just a guess though. Get a service manual, and have your digital camera ready as you take it apart so you can document the disassembly, and incase you need to show us the pics.. ;) Good luck [/QUOTE]
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MX, SX & Off-Road Discussions
Dirt Bike Mods & Maintenance
Cracked crankcase, what should I do?
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