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Message started by Fubar on 05/19/09 at 11:14:46

Title: Muffler Question
Post by Fubar on 05/19/09 at 11:14:46

Hey all,

Quick question for all you wrench heads out there. I have an 03 Thumper that I just finished putting stage 2 jets in with a open air cone filter. I also replaced the muffler with a screamin eagle knock off. While I love the sound the muffler itself as turned badly in the short few days I have had it on (blue,copper,purple hue) which I am assuming is because it's a cheap muffler. My header pipe is fine with no discoloration so I don't think it's running rich. My question is could i put the factory exhaust back on or would it not run right because of the other mods?

Thanks for your help.

Title: Re: Muffler Question
Post by LANCER on 05/19/09 at 12:59:06

3A2D342927382F5D0 wrote:

The "stage 2 jets" ... specify the # of the pilot jet and # of the main jet, and also did you change the needle at all ?

Title: Re: Muffler Question
Post by Fubar on 05/20/09 at 05:14:57

I put in a 155 main jet and a 50 pilot jet and did the white spacer mod. The bike runs great and the only discoloration I see anywhere is at the muffler where it connects with the header pipe and it goes about 7inches back. I know I need to take the muffler off and get a more air tight connection but I didn't think that would discolor the muffler unless the heat coming off the connection is turning the muffler because it's not all escaping out the back. Any thoughts would help :-/

Title: Re: Muffler Question
Post by ArmyOIF5678 on 09/20/10 at 22:10:59

humm...

Title: Re: Muffler Question
Post by 12Bravo on 09/21/10 at 04:43:46

Did you clean the new muffler really good before installing it and running the bike? I know that with Supertrapp mufflers, one must clean all the manufacturers oil off before using it or it will blue. I don't know if your pipe is the same way or not. Definitely get a better seal between your header and muffler.

Title: Re: Muffler Question
Post by Arnold on 09/21/10 at 07:05:18

I am running the same setup as you and while my muffler is a Harley Screamin Eagle, I can tell you that I get some blueing too. Maybe not as much as you described but it's on right where the muffler connects to the bike frame.

There is a product you can rub on your muffler to remove the blue but the name escapes me right now.

Title: Re: Muffler Question
Post by Bubba on 09/21/10 at 07:56:12

Blue Job...good stuff but ya gotta really work on it. Personally, I'd let it go blue...when you're tired of looking at it throw on a dyna...
BTW, I wouldn't go back to stock pipe...may throw off your carb and then you'd be back to tearing into that.

Title: Re: Muffler Question
Post by buttgoat1 on 09/21/10 at 09:42:22

I am jetted on the rich side and still have a very blue muffler, I think part of the problem is the baffle I inserted into the end of the stock headpipe, it has the can opener style slits and I have a perfect blue ring all around that portion of the muffler, I think that a dual wall baffle would keep the heat from the outer wall of the muffler.

I did do the blue job exercise and probably won't again, just let it look like I ride Bettie hard, well, I really do ride her hard, but that is the point, isn't it?

Title: Re: Muffler Question
Post by Superray on 09/24/10 at 17:51:17

I done the spacer thing on mine and also got the Supertrapp. I started with 7 of the 8 baffles that came with it and it worked great, so I left it alone. I am thinking about painting it this winter.............