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SuzukiSavage.com
/cgi-bin/YaBB.pl General Category >> Rubber Side Down! >> Red Hot Dyna Exhaust /cgi-bin/YaBB.pl?num=1430533699 Message started by Tjw on 05/01/15 at 19:28:18 |
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Title: Red Hot Dyna Exhaust Post by Tjw on 05/01/15 at 19:28:18 I recently bought my first savage(2003, 5,700 miles) about 2 weeks ago. I did a dyna slip on exhaust this week, following the install I found in the forums, using the tin can method. I know there is a small exhaust leak at the head, and the bike is burping a little bit when shifting, up and down, and when I cut off the throttle quickly. Tonight my buddy and I took our bikes on the highway, going speeds of about 60-65. It felt fine, was just feeling the bikes vibration quite a bit in the handlebars. When we pulled off the side of the road, the pipe was flaming out the end pretty bad so I cut the engine. When we looked inside the Dyna it was RED HOT! :-/ Freaked me out a bit. We let it cool down till it wasn't glowing anymore, then took it slow on the way home, about 15 or 20 minutes of going 45. When we got home, there were no flames, but when I cut the engine and looked in again it was still red hot, though not as bad as before. I have not rejetted the bike, was going to wait until the exhaust leak was fixed, and I'm not sure if the white spacer mod has been done or not. The brass plug over the air/fuel mixture cap was off when I bought it, so I have been trying to tune the carb a little bit with that. Is this normal? Is this bad? You guys are the experts of this bike! Help! :'( |
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Title: Re: Red Hot Dyna Exhaust Post by KennyG on 05/01/15 at 19:57:36 TJW, Sometime along about 2006 Harley added catalytic converters to their Dyna mufflers. I am thinking that your muffler could be equipped with a catalytic converter causing the extreme heat and flames. If you check the numbers on the muffler I think the last 2 numbers indicate the year of manufacture. Kenny G |
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Title: Re: Red Hot Dyna Exhaust Post by justin_o_guy2 on 05/01/15 at 20:00:24 Ohh no, not a cataclysmic perverter. |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/01/15 at 20:02:30 The numbers on the pipe are 65747-94. |
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Title: Re: Red Hot Dyna Exhaust Post by KennyG on 05/01/15 at 20:07:59 TJW, 94 should indicate the year of manufacture which should be 1994 and was long before the catalytic converter. Maybe one of the more experienced guys will chime in with the correct answer to the heat. If not, call the Harley shop near you and the parts department should be able to tell you if it has the converter. It would be good to fix the leak where the header goes into the head. Kenny G |
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Title: Re: Red Hot Dyna Exhaust Post by justin_o_guy2 on 05/01/15 at 20:11:32 Cold engine, gentle hand, 1/4" drive, fingers only. I'd be very careful, since you're unfamiliar with the maintenance it's had. |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/01/15 at 20:14:00 What do you mean Justin? |
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Title: Re: Red Hot Dyna Exhaust Post by justin_o_guy2 on 05/01/15 at 20:27:05 Kenny said It would be good to fix the leak where the header goes into the head. I'm cautioning you. I don't know anything about your abilities or the condition of the bike. I Do know that threads stripped out of the head are a considerable problem. I settled on snugging mine a tad every so often rather than risk it. The bike shakes, stuff loosens up, no biggie.. a little mediumm locktite, maybe swap them out for studs. |
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Title: Re: Red Hot Dyna Exhaust Post by Kris01 on 05/01/15 at 20:29:25 Kenny, the "94" is not the year of manufacture. It's the year of the last update. For example, that version could have been used from 1994 until 2002. In 2003 (hypothetically) there would be a model number change to, presumably, 03. As far as I know the only way to tell what year the muffler is, is to take the word of the seller. I don't think HD stamps them with a model year. Mine isn't. |
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Title: Re: Red Hot Dyna Exhaust Post by Ed L. on 05/01/15 at 20:42:45 The big gasket between the header and head gets really compressed after only one or two header removals and will leak bigtime. Start fresh with a new gasket before risking stripping the studs out by over tightening. Just my thoughts on it. A red hot exhaust could show that the carb needs a rejet because of the new muffler. Take little steps with tuning, one change at a time. |
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Title: Re: Red Hot Dyna Exhaust Post by KennyG on 05/01/15 at 20:46:24 Kris, When I bought the Dyna muffler for my S40, from a guy here on the forum, I called the Harley Shop and read off the whole string of numbers to Carolina and the numbers ended with 96. She called me back and told me the muffler had been manufactured in 1996. Maybe Harley doesn't know as much about it as you do. Kenny G |
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Title: Re: Red Hot Dyna Exhaust Post by Serowbot on 05/01/15 at 21:46:08 Don't worry too much about the glowing pipe... (what happens back there. stays back there)... (and it's kinda' cool)... It would be good to adjust your jetting... probably just a little bump up on the main jet...try #150... maybe 2/3 on the needle jet spacer to smooth out the mid-range... (nothing is critical, just incrementally better or worse)... ...and a new header gasket would probably help seal that leak... (I left my old one on, and added a new one, because it felt like the threads were bottoming out)... ...but this is a tough engine... you shouldn't worry too much... Make this process fun,.. not a panic... This engine will tolerate a lot... just don't let the idle speed drop too low, it wants enough rpm to run the oil pump... Other than that... Fine tune and finesse... and enjoy it... ;)... |
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Title: Re: Red Hot Dyna Exhaust Post by justin_o_guy2 on 05/01/15 at 21:53:40 the pipe was flaming out the end pretty bad so I cut I'm concerned. |
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Title: Re: Red Hot Dyna Exhaust Post by Kris01 on 05/01/15 at 23:06:49 0628230E3F2C3E254D0 wrote:
I don't pretend to be an expert but I think she is mostly correct. It could have been made IN '96 but was mostly likely made to '96 specs. The next changeover (whatever that may be) would carry the last 2 digits of that year for as long as they kept that run of mufflers. The "-94" could conceivably run til 2015. Dealers have been known to give out bad info. They're more interested in selling vehicles. |
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Title: Re: Red Hot Dyna Exhaust Post by WD on 05/02/15 at 09:39:07 Harley part numbers are very easy to figure out... the last 2 numbers, the ones after the dash, are the model year that the particular item debuted. Period. Minor updates throughout the production run, and some items have not been changed, at all, since the 1960s, are ignored. I've owned a lot of Harleys, have worked on thousands of them, and have worked in bike shops off and on for pushing 30 years. The inside of a Dyna muffler is usually some shade of red at night, even on a Dyna. Just the nature of the design. Consider it a second rear running light, even with a proper rejetting, there will be a glow. |
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Title: Re: Red Hot Dyna Exhaust Post by justin_o_guy2 on 05/02/15 at 11:02:59 312E282F32350434043C2E22695B0 wrote:
If it's not red hot,there is a real problem. Flames coming out the end? Naaah, snot right.. not just cruising, maybe if you nailed it or made it backfire, yeah, flames, but riding around? No. |
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Title: Re: Red Hot Dyna Exhaust Post by Kris01 on 05/02/15 at 11:45:18 Like this? https://www.youtube.com/watch?v=ddgHW37ePvg |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/02/15 at 14:59:56 Kris, the dyna looked similar to the video you have linked. And Justin, the pipe was not flaming at cruising speed at all. It only had flames coming from it when we pulled off the highway at a stop sign. It was like there was too much fuel going through the pipe and getting ignited by the red hot pipe. |
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Title: Re: Red Hot Dyna Exhaust Post by Oldfeller on 05/02/15 at 16:08:57 I have observed ghost flames (pale blue) exiting from our pipes up on the Dragon. A few of us are rejetted a bit on the rich side, admittedly, but yes I have seen the ghost flames before and remarked on them as "that's neat looking". |
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Title: Re: Red Hot Dyna Exhaust Post by old_rider on 05/02/15 at 18:47:47 The wife and I both noticed cherry hot exhausts when looking from the back. And it does add a bit of rear light like a second running light. On another note: Mine is running a bit rich, so my exhaust pipe is turning a bit dark blue/black and now the dyna is doing the same in the middle. So I have turned my air/fuel screw in one turn.... hopefully that will help. |
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Title: Re: Red Hot Dyna Exhaust Post by verslagen1 on 05/02/15 at 19:05:42 4E4D455348454453210 wrote:
your adjustment is the pilot screw or idling to low throttle. the color happens from the cruising speed or mid throttle. and blue to black is lean. best you can do is gold. I'd go 1 step higher with the main. and there's nothing you can do about the muffler turning colors 'cept blu job |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/02/15 at 20:16:19 Update: Took the bike out tonight for awhile at speeds of about 35, no flames. The pipe still turned red hot as seen in the pic. Wonder if the flames from highway speeds are something that would be fixed with fixing the exhaust leak and a rejet? |
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Title: Re: Red Hot Dyna Exhaust Post by verslagen1 on 05/02/15 at 20:21:09 0B35285F0 wrote:
The devil are in the details, how hot how long flames at idle or flames at speed? right now all you can do is guess. get a air/fuel gage and then you'll know. |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/02/15 at 20:39:43 No flames at speed. When we got off the highway and were at a stop sign, flames were coming out when I was revving the engine. We had been on the highway for about 15-20 minutes at 65 mph. The pipe was red hot, but the exterior of the pipe really didn't feel very hot. The pic I posted was just tonight after about 10 minutes of riding at 35 mph. No flames at speed or at idle revving. Still red hot, though not as bad as when we went on the highway. Again, the pipe was not very hot on the exterior. It seems that it will only have blue flames coming out of the end when I rev the engine after going at highway speeds. |
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Title: Re: Red Hot Dyna Exhaust Post by Dave on 05/03/15 at 07:50:00 The flames come out the exhaust when you rev the bike.....because when you close the throttle the fuel jets in the carb are closed and very little fuel can flow out the only jet that is open....which is the pilot jet. The mixture is so lean the spark plug cannot ignite it in the cylinder, so the unburned mixture flows out into the exhaust and the hot header and muffler ignite the mixture in the exhaust system....and flames go out the back of the muffler. (Why are your revving the engine when sitting at a stop light?....It should be able to sit and idle while waiting for the light to turn green - The engine would be just as happy to wait without the revving). Sound like your bike is running like it should. |
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Title: Re: Red Hot Dyna Exhaust Post by Steve H on 05/03/15 at 10:12:20 Seems like somebody said if there is a converter in it, the converter is sort of like a gray honeycomb type material. If it has one, the converter is always red hot once up to running temp. http://suzukisavage.com/cgi-bin/YaBB.pl?num=1407529013/24#24 Reply #15 in this thread has a pic of the catalytic converter in the dyna. That might help you to identify if it is with or without cat. |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/05/15 at 16:15:42 Dave, Only reason I was revving the engine at the stop sign was because I noticed the exhaust was sounding different, lower and gurgly. Which is when I noticed the blue flames, and cut the engine. |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/05/15 at 16:16:34 And thanks for the info Steve, I don't recall the inside of the pipe looking like the one with the cat in that thread |
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Title: Re: Red Hot Dyna Exhaust Post by Dave on 05/05/15 at 18:23:06 714F52250 wrote:
OK....Just wanted to be sure you weren't following this fellows advice: https://www.youtube.com/watch?v=1A3b_MRimbk [media]http://www.youtube.com/watch?v=1A3b_MRimbk[/media] |
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Title: Re: Red Hot Dyna Exhaust Post by justin_o_guy2 on 05/05/15 at 19:53:17 Ohh,no Not the Large Front Butt... That's just funny.. |
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Title: Re: Red Hot Dyna Exhaust Post by Art Webb on 05/05/15 at 20:06:59 ;D ;D ;D |
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Title: Re: Red Hot Dyna Exhaust Post by Tjw on 05/06/15 at 09:09:22 ;D Thats awesome |
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