SuzukiSavage.com - Re-jetting after Harley Muffler install

batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Re-jetting after Harley Muffler install Reply #15 - 07/07/16 at 09:38:30 Before you panic you can replace the missing baffle .Buy a 1 1/4 inch freeze plug (any auto parts store) and drive it halfway down the the muffler this returns it to stock ,making it easy to tune the carb.
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hawk41 Junior Member Offline SuzukiSavage.com Rocks! Posts: 65 Gilbert, AZ Gender:	Re: Re-jetting after Harley Muffler install Reply #16 - 07/07/16 at 09:53:58 Thanks for the tip! Before I do any modifications to the muffler I have sent a message to the party that I purchased it from asking for his advice on re-jetting as he has sold many of these mufflers here on this forum.
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Kris01 Serious Thumper Offline Eat, sleep, RIDE! Posts: 3767 Tennessee Gender:	Re: Re-jetting after Harley Muffler install Reply #17 - 07/07/16 at 19:38:38 zipidachimp wrote on 07/06/16 at 23:02:32: At sea level, Dyna muff, white spacer 1/2 thickness, pilot 55, main 155, my bike has become a rocket, 95% no backfires! Woohoo! You may be running rich. See my signature. I'm about 300-350' ASL.
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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Re-jetting after Harley Muffler install Reply #18 - 07/07/16 at 20:34:12 Using 2/3 washers on the needle lifts it making it run richer. If you can insert a broom handle more than a couple of feet up your muffler you have no baffle.
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hawk41 Junior Member Offline SuzukiSavage.com Rocks! Posts: 65 Gilbert, AZ Gender:	Re: Re-jetting after Harley Muffler install Reply #19 - 07/08/16 at 09:21:05 Well! It turns out that my muffler is a "Screaming Eagle" w/no baffle, just a straight thru muffler. Question? How can it be called a "muffler" if it has no baffle and does not "muffle"? Just askin'! So! Should I start a new "thread" asking if anyone knows how to jet for a "Screaming Eagle" muffler?
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Re: Re-jetting after Harley Muffler install
Reply #20 - 07/08/16 at 09:28:59

hawk41 wrote on 07/08/16 at 09:21:05:

Well! It turns out that my muffler is a "Screaming Eagle" w/no baffle, just a straight thru muffler. Question? How can it be called a "muffler" if it has no baffle and does not "muffle"? Just askin'! So! Should I start a new "thread" asking if anyone knows how to jet for a "Screaming Eagle" muffler?

Although you may be able to get your jetting for the bike to run OK with a straight through pipe....there is no possible way to change jetting to keep a pipe like that from backfiring.

Why do you think it is called a "Screaming Eagle"?
If there isn't anything inside to muffle....it is not a muffler!

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hawk41 Junior Member Offline SuzukiSavage.com Rocks! Posts: 65 Gilbert, AZ Gender:	Re: Re-jetting after Harley Muffler install Reply #21 - 07/08/16 at 09:35:07 Since this so called "muffler" was not designed with a baffle, is there a way to add some type of baffle to the muffler that will allow the carb. to be tuned to minimize the backfire?
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justin_o_guy2

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Re: Re-jetting after Harley Muffler install
Reply #22 - 07/08/16 at 09:37:10

Get a Dyna muffler and get on with riding. The Dyna looks good, sounds good, small bump in power over stock and easy to jet. And they are cheap and easy to get. Lots of New Harleys get ridden straight to a shop to be customized. Twenty bucks is a common price. Just avoid the catalytic converters and the crossover tubes.

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Re: Re-jetting after Harley Muffler install
Reply #23 - 07/08/16 at 09:41:06

hawk41 wrote on 07/08/16 at 09:35:07:

Since this so called "muffler" was not designed with a baffle, is there a way to add some type of baffle to the muffler that will allow the carb. to be tuned to minimize the backfire?

Maybe......I don't know what this muffler looks like inside (other than I expect it might be a hollow tube).

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hawk41

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Re: Re-jetting after Harley Muffler install
Reply #24 - 07/08/16 at 09:56:40

Yes! Straight thru and a broom handle goes all the way thru with no problem. One member suggested a 1 1/4 inch freeze plug inserted to about half way but my concern would be that the original design does not have anywhere for the exhaust gas to go if the pipe is blocked. It's beginning to look like a poor purchase decision. Maybe my best bet would be to put it on Craigs List to salvage some of the purchase price and hunt down a reasonable priced Dyno.

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Re: Re-jetting after Harley Muffler install
Reply #25 - 07/08/16 at 10:04:50

hawk41 wrote on 07/08/16 at 09:56:40:

One member suggested a 1 1/4 inch freeze plug inserted to about half way but my concern would be that the original design does not have anywhere for the exhaust gas to go if the pipe is blocked.

That suggestion was made when you were telling us that you had a Harley DYNA muffler.....and it does not apply to your Screaming Eagle. Some folks knock out the little plug in the DYNA to make is straight through, and if they do that you can replace it with a freeze plug.

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Re: Re-jetting after Harley Muffler install
Reply #26 - 07/08/16 at 12:07:31

Dude, do you Have twenty bucks? Get a Real Dyna muffler and ride. Sell that thing you got when it is handy.. Way more drama than necessary. Solve the problem, it's Easy.. then see about recouping the losses.

Craig's list is Great, except for when it Isn't..
Call around, see if anyone in town has a Dyna, try to Not get breathless if they say they do. Ask if it's a New take off. Don't tell anyone you want it for a rice burner. You scraped one up,don't Have to have one, but it would be good..
Some Harley places are crappy about the Japanese bikes.
Palpable Need can be expensive.

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hawk41

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Re: Re-jetting after Harley Muffler install
Reply #27 - 07/08/16 at 13:02:15

Nothing on Craigs List at this time. The local Phoenix bike salvage yard doesn't do Harley's. Called the local Harley shops but they say they do not sell the old muffler take-offs. PayPal and I are in an ongoing pis*ing match so eBay is out (they are pretty expensive anyway). Probably my best bet is to put my stock muffler back on so I can ride while I try to find a Dyna. Want to thank all you forum member who have taken your time to try and help me with this problem. Terry Cool

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batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: Re-jetting after Harley Muffler install Reply #28 - 07/08/16 at 13:25:26 If the Harley guys don't sell them ,what do they do eat them ?maybe you could do some dumpster diving!
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hawk41 Junior Member Offline SuzukiSavage.com Rocks! Posts: 65 Gilbert, AZ Gender:	Re: Re-jetting after Harley Muffler install Reply #29 - 07/08/16 at 13:28:57 I don't know! Some of them look like they could chew one up and spit it out like chewin' tabacco.
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