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125 head onto a 110
Posted by : Nut - Cheltenham (82.33.210.228) 
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On Tuesday 03/07/12 at 21:32:04
You can fit a big valve 125 head to a 110cc engine. Its a bit of a bodge, but it works. The different stud pattern can be overcome by removing the dowels between the barrel and head; this allows the narrow studs on the 110 bottom end to pass through the 125 head. Use the 125 gasket and the 110 cam sprocket. No real advantage in doing this unless you fit a dome top piston to overcome drop in compression due to the larger combustion chamber. But just thought you might like to know.
Cheers all
Nut
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