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/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Puzzled by blueing? /cgi-bin/YaBB.pl?num=1353962320 Message started by gerald.hughes on 11/26/12 at 12:38:40 |
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Title: Puzzled by blueing? Post by gerald.hughes on 11/26/12 at 12:38:40 Just put a Dyna muffler on the bike, and have noticed that it has developed some hot spot burns in less than 1000 miles. Any ideas on what is causing it. I don't think that it is a lean/rich issue, since the entire muffler is not turning, only these spots. Thanks. http://i414.photobucket.com/albums/pp223/gerald_hughes/IMG_3803.jpg |
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Title: Re: Puzzled? Post by hotrodbobber on 11/26/12 at 12:44:06 hi there, looks like a hot spot caused by the baffle directing the hot gases to the outer case, it happens on my shorty turnout too, maybe mixture, localised blueing is caused by hotspots, sometimes from a mild weak mixure |
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Title: Re: Puzzled? Post by Dave on 11/26/12 at 13:14:15 The exhaust gasses on a DYNA muffler travel through an inner pipe to about the front 1/3rd until they reach the portion of the center tube that is perforated - then the gases move into the outer shell where yours has turned blue. The gasses then flow through the outer shell and then pass back into the center tube through another set of holes. Your muffler has turned blue where the gasses are flowing out of the center tube and make the outer shell hot. Not exactly sure why......what jetting to you have and do you sit in traffic for a long time? My DYNA does not turn blue. |
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Title: Re: Puzzled? Post by verslagen1 on 11/26/12 at 15:18:53 Also it's important not to have any oils or waxes on the muff or header. As they'll turn it blue too. |
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Title: Re: Puzzled? Post by Routy on 11/26/12 at 18:53:26 That is caused by something on the outer surface. |
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Title: Re: Puzzled? Post by justin_o_guy2 on 11/26/12 at 18:59:13 S/trapps come with instructions to Clean the Thing thoroughly or the warranty will not apply. OIls used in manufacturing do that, clean it, get some Blue Job,, ( Man,, I hope that the right name) & clean it up., |
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Title: Re: Puzzled? Post by Cavie on 11/27/12 at 05:54:23 My Dyna didn't turn blue but then I had it professionally jetted. |
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Title: Re: Puzzled? Post by Gyrobob on 11/27/12 at 06:10:25 Thread titles like "puzzled" and "yea or nea" don't do much to get people interested in the thread. "Thread" would be as informative, eh? |
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Title: Re: Puzzled by blueing? Post by Serowbot on 11/27/12 at 10:36:22 You're right, Gryro... Better?... :-?... "Puzzled by blueing?"... PS,.. after thinking about it,... I think the muffy I put on Gerry's bike is a Cat model.. They do tend to blue like that... (It's not from any real restriction,.. but the heat element of the Cat coil)... So,.. I'd just ignore it... Blue is ever so pretty anyway... :-?.. |
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Title: Re: Puzzled by blueing? Post by Dave on 11/27/12 at 12:24:53 Serow....Your a genious! I have looked down the throat of a DYNA with a cat inside....and that is exactly where the cat element s located. Mystery solved. |
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Title: Re: Puzzled by blueing? Post by Gyrobob on 11/27/12 at 13:36:03 wow!! Someone actually paid attention to one of my suggestions. Thanks, Gents. |
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Title: Re: Puzzled by blueing? Post by Serowbot on 11/27/12 at 13:55:10 Geez!.. I just got thanked, and called a genius... I should just quit and never come back... That it ain't ever gonna' happen again... :-?... |
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Title: Re: Puzzled by blueing? Post by gerald.hughes on 11/27/12 at 15:51:09 As usual, a big thanks to all of you. Now at least I know why it is blueing, and I can live with that. I am not much on looks, hell on function, but not so much on looks. As long as the muffler works, and is not going to burn through, I am ok. One of the things that is so great about this site, is that there is so much collective experience that most calls for help result in answers. Thanks again. |
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Title: Re: Puzzled by blueing? Post by justin_o_guy2 on 11/27/12 at 19:48:41 3026312C34212C37430 wrote:
OHHH, Now,, It Could happen,, & you could get hit by lightning at the exact moment you pulled the trigger on a snub nosed 38 & hit a bullseye at 300 yards, blindfolded.. Id say its about the same odds,, but it Could Happen,, |
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