misterroy Posted June 24, 2019 Report Share Posted June 24, 2019 I have an 03 sherco and the exhaust needs to be cut open to repack it. Before I start on this task, what damage could I be doing running it in its present, noisy state? thanks Quote Link to comment Share on other sites More sharing options...
tony27 Posted June 25, 2019 Report Share Posted June 25, 2019 No real damage but you are missing out on bottom end power if it needs repacking 1 Quote Link to comment Share on other sites More sharing options...
mcman56 Posted June 25, 2019 Report Share Posted June 25, 2019 I agree with Tony27. I have come to the conclusion that the sweet off idle power of a new bike is totally due to a clean exhaust. I replaced the exhaust on an 02 Sherco and immediately got that new bike response....... for a while. Quote Link to comment Share on other sites More sharing options...
misterroy Posted June 29, 2019 Author Report Share Posted June 29, 2019 I have come up with a plan "B" .. One of the bolt holes in the top of the exhaust has failed leaving a 6mm hole into the exhaust chamber, currently sealed with liquid metal. I have some 4mm glass fiber rope which should be easy enough to feed into the hole. Its intended use is for sealing a stove. Any thoughts? Quote Link to comment Share on other sites More sharing options...
mcman56 Posted June 30, 2019 Report Share Posted June 30, 2019 You should find pictures on the web of what is inside. I cut a hole in a beta mid pipe and the steel wool packing was still in place. It was just caked with black goo and not easy to pull out. I repacked with steel wool and used some super soft aluminium plate to cover the hole. Silicone and rivets held it in place. I don't remember the allow you it formed as easily as aluminium foil. If you have good AL welding skills, a bigger hole would make it much easier Quote Link to comment Share on other sites More sharing options...
2stroke4stroke Posted July 1, 2019 Report Share Posted July 1, 2019 On 6/29/2019 at 6:39 PM, misterroy said: I have come up with a plan "B" .. One of the bolt holes in the top of the exhaust has failed leaving a 6mm hole into the exhaust chamber, currently sealed with liquid metal. I have some 4mm glass fiber rope which should be easy enough to feed into the hole. Its intended use is for sealing a stove. Any thoughts? If you can get more than a couple of inches through the hole then buy a lottety ticket as it is your lucky week. The packing needs to be evenly distributed and not too tightly packed - impossible to do without a large access. The rope is the wrong stuff anyway. I have used the same bag of loft insulation for years so it works out cheap, you could even borrow some from your attic? Ease of repacking was one reason why I bought a Beta and, given the importance of a correctly packed exhaust, then frankly any bike that can't easily be repacked has a design flaw in my opinion. I can't be alone in that. 2 Quote Link to comment Share on other sites More sharing options...
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