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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Fogging for Mosquitos; Valve Guide Issues and Solutions
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<blockquote data-quote="ClassicBiker" data-source="post: 107003" data-attributes="member: 1632"><p>Bill, I replaced my Mk2 cams with Mk1 a couple of years back as the cams and the rockers were very badly worn. I had originally thought that perhaps when my father had rebuilt the bike back in the late 70s early 80s that he had neglected to shorten the guides, but when I was replacing the cams, I could clearly see the top of the guides were all nearly flush with the top of the lock rings. Now that I have the heads apart I can see the three remaining guide tops are not damaged in anyway. Which leads me to believe the guide self destructing is just the luck of the draw.</p><p></p><p>TT, I had intended to replace all the guides and lock rings with the new type that take the oil seal. I had also read in the other thread where you posted the dimensions that someone had managed to fit an oil seal to your modified part, so I was going to do the same. But shimming it to make sure that pressure is exerted had not occurred to me.</p><p>Steven</p></blockquote><p></p>
[QUOTE="ClassicBiker, post: 107003, member: 1632"] Bill, I replaced my Mk2 cams with Mk1 a couple of years back as the cams and the rockers were very badly worn. I had originally thought that perhaps when my father had rebuilt the bike back in the late 70s early 80s that he had neglected to shorten the guides, but when I was replacing the cams, I could clearly see the top of the guides were all nearly flush with the top of the lock rings. Now that I have the heads apart I can see the three remaining guide tops are not damaged in anyway. Which leads me to believe the guide self destructing is just the luck of the draw. TT, I had intended to replace all the guides and lock rings with the new type that take the oil seal. I had also read in the other thread where you posted the dimensions that someone had managed to fit an oil seal to your modified part, so I was going to do the same. But shimming it to make sure that pressure is exerted had not occurred to me. Steven [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Fogging for Mosquitos; Valve Guide Issues and Solutions
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