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Harley Sportster muffler question
I have 2 of these and they will fit nicely on the head pipes I'm planning to install. They look very restrictive looking inside them though.
Advice?
Advice?
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Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.
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I don't know, but I'll make an observation. Those mufflers appear to be setup for a crossover, in which case each cylinder would be using both mufflers at the same time. Maybe they need to be more restrictive when they're setup that way? JATI think I have a loose screw behind the handlebars.
'79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake lines -
muffs
I have two sets of them without the crossover. They are very loud, and meant to be installed on the same side. I never put them on an 1100. Heard one set on a XS650, very loud.put something smooooth betwen your legs, XS eleven
79 F (Blueballs)
79 SF (Redbutt)
81 LH (organ donor)
79 XS 650S (gone to MC heaven)
76 CB 750 (gone to MC heaven)
rover has spokenComment
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I thought of that too Doug but Rockin'D;s XS is in my garage and it has basically the same mufflers on it except for the opening for a crossover. Looking inside them they look the same.
I tried to take a pic of the inside but it didn't turn out well. About half way through the baffle on the inlet side it's blocked off and there are several rows of tiny holes in the baffle pipe. The outlet looks the same but there appears to be less tiny holes in the baffle.Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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Heh heh heh, bet they aren't NEARLY as loud as what I have on there now.Originally posted by rover View Post
Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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Actually, several have used variations of those on their XSesssiveOriginally posted by BA80 View PostI have 2 of these and they will fit nicely on the head pipes I'm planning to install. They look very restrictive looking inside them though.
Advice?
. Your just gonna have to cut two circle plates, tack them around in several places, then weld all the way around
.
81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment
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How's his bike run with them?Originally posted by BA80 View Post
One thing's for sure - if you hook 'em up with the crossover you should have less back pressure than without it. Probably get in the way of the center stand too, though. Okay, that's two things.
I think I have a loose screw behind the handlebars.
'79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake linesComment
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Doc's bike ran good before it lost compression on one cylinder.
The crossover can't be hooked up with the mufflers on opposite sides of the bike. The orientation of the bracket mounts and the crossover inlets won't allow it. They will have to be blocked.
A freeze plug for an automotive engine should do nicely to plug them.Greg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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If they work well on his you'd think they'd work fine on yours too. Freeze plug idea sounds like a good one. You gonna weld 'em in?Originally posted by BA80 View PostI think I have a loose screw behind the handlebars.
'79 XS11 Standard, Jardine 4/1, Dyna DC1-1 Coils, 145 mains, 45 pilots, plastic floats - 25.7mm, XV920 fuel valves, inline fuel filters, speed bleeders, Mikes XS pods, spade-type fuse block, fork brace, progressive fork springs/shocks, manual petcocks, 750 FD, Venture cam chain tensioner, SS brake linesComment
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Wasn't planning on welding. I'll just find some with a good snug fit, drive them in and spike the edges of the inlet.Originally posted by dbeardslee View PostGreg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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Those are stock mufflers, probly not too loud.......only concern might be rejetting.....try em and see....Mark
1980 xs1100g 3H5.......
1992 Ducati 907ie
2001 Moto Guzzi JackalComment
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Jetting up or down? I'm one size up now running basically open pipes.Originally posted by Bikes View PostGreg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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Don't some Harley pipes have catalytic converters built into them? These aren't some of those are they?Nathan
KD9ARL
μολὼν λαβέ
1978 XS1100E
K&N Filter
#45 pilot Jet, #137.5 Main Jet
OEM Exhaust
ATK Fork Brace
LED Dash lights
Ammeter, Oil Pressure, Oil Temp, and Volt Meters
Green Monster Coils
SS Brake Lines
Vision 550 Auto Tensioner
In any moment of decision the best thing you can do is the right thing, the next best thing is the wrong thing, and the worst thing you can do is nothing.
Theodore RooseveltComment
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Doesn't say anything about exhaust emissions on the stamp on the side, just noise.Originally posted by natemoen View PostGreg
Everybody is a genius. But if you judge a fish by its ability to climb a tree, it will live its whole life believing that it is stupid.”
― Albert Einstein
80 SG Ol' Okie;79 engine & carbs w/pods, 45 pilots, 140 mains, Custom Mac 4 into 2 exhaust, ACCT,XS850 final drive,110/90/19 front tire,TKat fork brace, XS750 140 MPH speedometer, Vetter IV fairing, aftermarket hard bags and trunk, LG high back seat, XJ rear shocks.
The list changes.Comment
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Find the righr size and weld them inOriginally posted by BA80 View Post.
81H Venturer1100 "The Bentley" (on steroids) 97 Yamaha YZ250(age reducer) 92 Honda ST1100 "Twisty"(touring rocket) Age is relative to the number of seconds counted 'airing' out an 85ft. table-top.Comment
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