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Sportster Heads

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XR-750 with fin problems
XR-750 with fin problems...
Supporting the fins...
Supporting the fins...
...finished cutting fins...
...finished cutting fins...
The XR heads have fins so thin that they would crack while racing. One solution (?!) was to tack weld a rod thru them... Customer wanted the original fins & profile. I use small oak wedges for bracing the fins while working... ..after finishing milling the "new" fins...you may note the support weld removal at the intake port.


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