Posted by William --Previous Message--
on 6/24/2003, 9:12 am, in reply to "Shadow Exhaust Mods"
198.26.125.12
You do not need to rejet, however you will need to fatten up the carbs a bit. The bike came from the factory very lean anyway, a fatter mixture is in order without a modified exhaust. On the side of each carb there is a metal plug approximately 1cm in diameter. (There are two plugs so it should be the larger one) You will need to drill a small hole in these plugs, just enough to break through the plug. Be careful because the mixture screw is just under these plugs. Once you have the hole drilled, threas a small screw, any type, into the plug just enough to bind into the plug. Then with pliers or something pull on the screw and the plug should pull out as well exposing the mixture screw. (The plugs are put there so the average person can't play with the mixture, which could change the amount of emmissions the bike produces) With the mixture screws, out is fat (rich) in is lean. Your bike is already lean so I would start with 2 rounds out on each carb. The bike will start better and warm up faster. However you dont want to get it too fat because the performance will suffer and your pipes will blue. Conversley, you need to richen the mixture because a lean mixture causes a cold nature, and could burn pistons. I have mine adjusted just enough so that id does not backfire on deceleration, and I occasionally need to choke it for cold starts on a warm day. I learned the hard way that the bike already has bigger jets than you will get in a jet kit, they (Cobra) just gives you a thinner slide needle. If adjusting the mixture scres doesn't help, there are other things you can do without buying a jet kit.
: I have a 1999 Honda Shadow A.C.E. I would like
: to make the factory exhaust louder with
: out rejetting carbs. How can I do this?
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