on dismantling a 1958 dominator 99 cylinder head I’ve found some fibre washers under the spring bottom cups that do not show on the drawing I have just wondering if they should be there or has some one added to tension springs
My 1957 Dominator has them, they are to act as a heat shield apparently.
don’t suppose you know the part number as there not show on drawing I have
Part Numbers - VALVE INSULATION WASHERS P/Ns - 067845
There are two thicknesses of these washers around. Depends on the valve springs .......standard or SS.
hello All Now the Norton Manxman 650 Has 3 sizes of Valve spring Insulating washers and Shims and 3 types valve spring tensional strengths All listed I my Norton Manxman Parts catalogue, ThIs model had its own parts Manuel and Now very very hard to find it's very lucky I have obtained one,
Yours Anna J
Peter did post that his bike was a Dominator Model 99.
Manxman 650 parts may be of interest to him and may fit but do not really answer his question.
thanks for the info will try to find the thinner ones as I’m replacing the springs
I believe that it also depends on which cam you have. The standard Domi cam would use the 2" long springs but if you have an SS cam you would use the shorter type as fitted to 650s onwards.
I think that heat insulators would be fitted which ever cam you use. As to the shims as listed in the parts manual, I don't know what the loading should be on the springs.