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Is there a way to repair this break in the case above sprocket, without splitting cases ?
 

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It’s your typical break out above the front sprocket about 3 inches long. It’s on a 64 Triumph Bonneville. Thanks for any input.
 

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No
Although you could fix a plate somehow. Ugly as f*^k
Most seem to be ok with a chunk missing- don't think I would be happy with a non welded patch
 

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No
Although you could fix a plate somehow. Ugly as f*^k
Most seem to be ok with a chunk missing- don't think I would be happy with a non welded patch
Patch is not ugly is done in a workman like manner from sheet aluminum...
 

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Is there a way to repair this break in the case above sprocket, without splitting cases ?
Welded to look the same as original when done...……….no!!!
Tap a hole in the cases and then bolt a small polished stainless steel plate over the broken area - as a quick fix until the day you have to split the cases - yes. Some Triumphs actually had a small hole already tapped with a thread and a factory steel feeder plate or edge was installed. I know my Cub has this.

The plate idea is a temporary fix and helps controls oil fling off the chain...so is a practical option till the day you need a motor rebuild.
 
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