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- Nov 26, 2009
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The old domni 500ss and 650ss offered the same size valves as Norton used in their 750s and 850s - 1-1/2 in and 1-5/16 ex. They just increased the bore and didn't bother enlarging the valves size to suit. See 500 and 850 pistons below.
They should have upped the valve diameters - there's room for them and its what the bigger motors need.
They should have upped the valve diameters - there's room for them and its what the bigger motors need.