Afternoon all. I have spent the last 6 weeks inventorying my parts, cleaning the cylinder head and removing rust for my 54 Dominator 88. I believe I am ready to start rebuilding the cylinder head. Are there complete kits out there that include the valves, springs, gaskets, push rods that you could recommend that I buy?, Europe or USA, doesn't matter. Any advice is appreciated.
Jeff, RGM have a cylinder…
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Head parts
I have read that the non DD valve springs are all the same , I have also read that there are 3 different springs . Do some research.
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I have the original springs
Probably the best way to find out is to compare them when I receive the parts.
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Valve Springs
The chart below shows the Norton Dominator Valve Spring lengths over the years. The earliest are very hard to get from a stockist but there may be some New Old Stock around. Generally the later Dominator and SS Head Springs are the easiest to get hold of.
The SS springs are shorter but have thicker coils. They also had heat resistant washers under the spring cups which all of the various types will benefit from if fitted.
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So four different length…
So four different length springs for Dommies , ! ,how about the 750 and 850 ?
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Jeff,
RGM have a cylinder head overhaul kit, part number050274 for pre 1963 models. They also supply pushrods and gaskets.