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Help!

The manual details how the numbers stamped into the case (along with the numbers on the crank) will determine which size bearings to use.

I've got 2 different used cases: one's got a bad cylinder, the other's got a badly broken lower case. If both cases have the same "bearing" numbers, can I use the top of one with the bottom of the other?

In other words, are they line-bored as an assembly to the point where they can only be used together? (Or are like parts interchangeable?)
 

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Tha 5 star Manic Mechanic
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1,126 Posts
Help!

The manual details how the numbers stamped into the case (along with the numbers on the crank) will determine which size bearings to use.

I've got 2 different used cases: one's got a bad cylinder, the other's got a badly broken lower case. If both cases have the same "bearing" numbers, can I use the top of one with the bottom of the other?

In other words, are they line-bored as an assembly to the point where they can only be used together? (Or are like parts interchangeable?)
They have to be used as a set, they are machined together. The numbers only tell how far the bearing boses have been machined. This is the reason that the cases are only sold as a set, I would'nt try to circumvent the system on this one either, can it be done? possibly, but it would never be "right"
 
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