SuzukiSavage.com - Muffler sleeve

SoC

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Muffler sleeve
06/27/18 at 20:47:52

Question about a simple thing, but not sure where to find it. I have a Dyna for my one bike and it has an internal sleeve it came with to fill the space between the OD diameter of the header and the muffler inlet ID. The sleeve is a thin wall tube, wall is .003 thick, ID is 1.67", OD is 1.73". Total length is 2 3/8". Figure it's some sort of standard thing, easily attainable if you know what it is. Does anyone know what it is?

I have seen reference to cutting a tin can and making a fill spacer but this is very clean and nice.

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IslandRoad Serious Thumper Offline It doesn't vibrate, it purrs! Posts: 1147 The Kiewa Valley, Australia Gender:	Re: Muffler sleeve Reply #1 - 06/27/18 at 20:55:55 It would have to be a really tight fit to act as a gasket, especially if it does not have a slot that can close when the clamp is tightened down. Also there is the issue of Imperial Vs Metric. The muffler is the former, and the header is the latter. Have you tried it for fit on your Savage?
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SoC

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Re: Muffler sleeve
Reply #2 - 06/28/18 at 08:05:14

It is a tight fit, fills gap between The metric OD of header and the 1.75" ID of muffler perfectly. Mr. Verslagen, I believe, has talked of using a snip of aluminum can to effectively do same.I figured this might be a Harley part or something along those lines. You can buy spacer sets from J&P, they are a little thicker. This thing fits the metric to standard adaptation perfectly.

The one shown is out of the Dyna I have, it came with the muffler when I bought it.

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verslagen1 YaBB Moderator ModSquad Online Where there's a will, I want to be in it. Posts: 28769 L.A. California Gender:	Re: Muffler sleeve Reply #3 - 06/28/18 at 08:29:08 SoC wrote on 06/27/18 at 20:47:52: The sleeve is a thin wall tube, wall is .003 thick, ID is 1.67", OD is 1.73". Total length is 2 3/8". Figure it's some sort of standard thing, easily attainable if you know what it is. Does anyone know what it is? should be .030"? .003 is foil, that's not foil. That's just dimensional tubing.
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Tocsik

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Re: Muffler sleeve
Reply #4 - 06/28/18 at 15:40:39

SoC wrote on 06/28/18 at 08:05:14:

It is a tight fit, fills gap between The metric OD of header and the 1.75" ID of muffler perfectly. Mr. Verslagen, I believe, has talked of using a snip of aluminum can to effectively do same.I figured this might be a Harley part or something along those lines. You can buy spacer sets from J&P, they are a little thicker. This thing fits the metric to standard adaptation perfectly.

The one shown is out of the Dyna I have, it came with the muffler when I bought it.

When using a home made gasket from a tin can, it's cut at an angle so it cinches down when tightening the clamp. I don't see how you could be sure of no air leak using that sleeve, even if it's a tight fit. Air is pretty small.

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IslandRoad

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Re: Muffler sleeve
Reply #5 - 06/28/18 at 15:50:51

I used the tin can method. It's a tin with large 'ripples' running around it. The ripples crush down to form the seal. And as Tocsik said, if you cut it with a little gap, it closes over when clamped. For this method you also need to cut six-eight slots in the end of the muffler so it can pull in when clamped down. It took me a couple of attempts, but it worked great ... no cement, or high-temp silicon. BTW, the OEM HD muffler clamp is your friend for this method ☺

Lancer had mentioned he cuts a drink can into a strip and wraps it around the end of the header until it gets tight enough to tap the muffler on with a mallet. I assume the little overlap at the end of the strip gets crushed over.

It's unusual to find a sleeve with metric a ID and Imperial OD. I wonder if it's a custom product.

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batman

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Re: Muffler sleeve
Reply #6 - 06/28/18 at 19:33:00

Problems could arise with the use of that sleeve, the smooth surfaces might allow leaks . the tin can (using the rippled section) allows 4-5 sealing surfaces as its crushed ,and seals even if the parts aren't perfectly aligned . Use the HD clamp it's wide and strong.(my tin can mount as been leak free , without sealant for four years ,14,000miles so far.)

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SoC

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Re: Muffler sleeve
Reply #7 - 06/28/18 at 21:04:12

Thanks, my bad on the decimal place, it's about a 1/32" thick. I guess the tin can method will be the choice. With sleeve it is a very tight fit, it requires you put it part way on header and seat the muffler by twisting back and forth while pushing it on. Once it's together and has some hot exhaust flowing through it, it seems to seal fairly well.

Since can method works and is simple, it's the way to go.

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IslandRoad

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Re: Muffler sleeve
Reply #8 - 06/28/18 at 22:24:28

SoC wrote on 06/28/18 at 21:04:12:

Thanks, my bad on the decimal place, it's about a 1/32" thick. I guess the tin can method will be the choice. With sleeve it is a very tight fit, it requires you put it part way on header and seat the muffler by twisting back and forth while pushing it on. Once it's together and has some hot exhaust flowing through it, it seems to seal fairly well.

Since can method works and is simple, it's the way to go.

There are different tin cans. Some have a small ripple profile (like a can of peas), some have large ripples (I used a large dog food can) - I don't even have a dog - One can of dog food to seal the HD Muffler = cheap investment Cool

We getting technical here Grin

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S40, 2014, Dyna, Raptor, 52.5/152.5, spacer mod, sea level, cat-eye LED tail light, bullet style halogen turn signals, 'Superbars' with custom 40mm risers, modified stock seat, Metzeler tyres.

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Serowbot YaBB Moderator ModSquad Offline OK.... so what's the speed of dark? Posts: 28376 Tucson Az Gender:	Re: Muffler sleeve Reply #9 - 06/29/18 at 07:22:49 Tocsik wrote on 06/28/18 at 15:40:39: Air is pretty small. Yes it is... yes indeedy... Although,.. I have heard of some guys catching big air... That stuff must be easy to block...
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