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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Valve Guides
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<blockquote data-quote="timetraveller" data-source="post: 104118" data-attributes="member: 456"><p>Chris, before getting too despondent take it all apart and see just what has happened. At the moment the photograph only shows that the lock ring has unscrewed. Whether it has ruined the female thread or not has to be found out. If it has then I have a design for piece that will trap the top of a new lower guide and be held down by the bottom of the top guide and the valve spring. One would have hoped that all cylinder heads would have been the same in this part but my experience is that there are differences so you would have to get the bit made to fit your cylinder head. That is the diameter and length have to fit your bits. However the gadget itself is relatively straight forwards to make and the machinist just has to have access to your cylinder head to ensure that it is all a nice fit. Keep us informed and good luck with it.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 104118, member: 456"] Chris, before getting too despondent take it all apart and see just what has happened. At the moment the photograph only shows that the lock ring has unscrewed. Whether it has ruined the female thread or not has to be found out. If it has then I have a design for piece that will trap the top of a new lower guide and be held down by the bottom of the top guide and the valve spring. One would have hoped that all cylinder heads would have been the same in this part but my experience is that there are differences so you would have to get the bit made to fit your cylinder head. That is the diameter and length have to fit your bits. However the gadget itself is relatively straight forwards to make and the machinist just has to have access to your cylinder head to ensure that it is all a nice fit. Keep us informed and good luck with it. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Valve Guides
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