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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Exhaust AND carbs.
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<blockquote data-quote="timetraveller" data-source="post: 110407" data-attributes="member: 456"><p>Chris, it was something similar that fist put me on to using normal silicon mastic for jobs like this. I was helping a sidecar racing chum at a meeting somewhere and as you probably know many of the sidecar outfits are built by normal chaps racing on a shoestring. This means that they have blow ups and break downs fairly often. During the lunch break I was walking round the paddock and saw some chaps rushing to rebuild the top end of their engine. They had no head gasket but instead they were squirting normal builders mastic around the joint. When I queried this they told me that it typically lasted many races. One of my other interests is boats and over the years I have built, assembled or rebuilt several boats to be used in the Mediterranean, where summer sun and sea air can shorten the life of things fairly dramatically. I have found that bedding hatches in with clear mastic I get at least ten years out of it but if I use pigmented mastic it is brittled within a year. Hence the suggestion to use the clear for the exhaust systems where, on my bike, it has lasted years.</p></blockquote><p></p>
[QUOTE="timetraveller, post: 110407, member: 456"] Chris, it was something similar that fist put me on to using normal silicon mastic for jobs like this. I was helping a sidecar racing chum at a meeting somewhere and as you probably know many of the sidecar outfits are built by normal chaps racing on a shoestring. This means that they have blow ups and break downs fairly often. During the lunch break I was walking round the paddock and saw some chaps rushing to rebuild the top end of their engine. They had no head gasket but instead they were squirting normal builders mastic around the joint. When I queried this they told me that it typically lasted many races. One of my other interests is boats and over the years I have built, assembled or rebuilt several boats to be used in the Mediterranean, where summer sun and sea air can shorten the life of things fairly dramatically. I have found that bedding hatches in with clear mastic I get at least ten years out of it but if I use pigmented mastic it is brittled within a year. Hence the suggestion to use the clear for the exhaust systems where, on my bike, it has lasted years. [/QUOTE]
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Tech. Advice: Series 'B' / 'C' 500cc/1000cc Bikes
Exhaust AND carbs.
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