Ok so I am trying to figure out my exhaust I have a 4-1 header and I was going to do an open header but it would be way to loud and also if I havnt learned anything else from yall its open header bad idea for performance but I want a little sound so on to my next idea I am going to build an exhaust system using 2.5 inch and 3 or 3 1/2 pipe the 2.5 inch would be on the inside of the larger similar to an aftermarket double walled cruiser exhaust the reason I even want to do double pipe is because I think the larger pipe would look better and the smaller 2.5 inch is better for performance they will not be stainless just regular pipe with header wrap.I will be adding a straight through 2 inch inside diameter samson ground pounder baffle the exhaust will stop past the rear peg and have a slight turn out what do yall think on looks and sound and performance. I know that was long winded but I want to paint the picture
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That sounds like quite a project to me.It would be cool though.Trying to route four pipes around the oil filter and around everything else,plus double wall pipe
will be a challenge.One thing about the double wall though,You would be somewhat protected from burning yourself.
Rick80 SG XS1100
14 Victory Cross Country
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I already have the 4-1 header and a section of pipe that goes back and does a slight zig zag and exits from under the bike it was on the header when I got it so the oil filter and routing problems are taken care of from where itcomes out and turns back I will start the 2 in 1 exhaust should be clear of everything and hugged up to the bike79 XS 1100 Special
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Your back pressure will be determined by the baffle in the muffler not necessarily the type of exhaust or the way it's routed. The only thing I might suggest is to make your head pipes all the same length until they join with your collector. If I have my facts close to correct this will help with exhaust scavenging.
Something you can do if you feel you don't have enough back pressure is take a LARGE washer and weld it into the exhaust so it restricts the flow, either weld it straight to the pipe or drill a hole and put a bolt in, then weld the washer to the end of the bolt to have the washer centered.Last edited by BigDick; 03-31-2009, 07:31 AM.1980 XS11SG
Dunlop elite 3's, progressive fork springs, tkat brace
Stock motor, airbox, carbs, exhaust
ratted out, mean, and nasty
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My question is, if you are going double walled why bother with wrap? Unless we are mis-understanding you and you are only doing this custom exaust in-place of the existing muffler/s. Your description sounds as though you are building an entire new system. Which is the case?'81 XS1100 SH
Melted to the ground during The Valley Fire
Sep. 12th 2015
RIP
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The reason for the exhaust wrap is the look I have been into hotrodding all my life so that is the look I am going for also I am using standard exhaust pipe not chrome or stainless so does any one have a good idea for a high temp cheap coating I know I can get flat black but are there any other colors likesilver or something that would look good if not that is my other reason for wrapping79 XS 1100 Special
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Just look for the ceramic high temp header paint in any decent auto parts store, Personally I'd get the 1200 degree paint. They have them in a fair range of colors.1980 XS11SG
Dunlop elite 3's, progressive fork springs, tkat brace
Stock motor, airbox, carbs, exhaust
ratted out, mean, and nasty
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