SuzukiSavage.com - After glow?

Zook YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 47	After glow? 03/14/19 at 16:46:41 Is this normal?
Back to top	398EDD8D-DDAA-493A-9F42-325DE36CB8FD.jpeg IP Logged

Matchless G11 Senior Member Offline SuzukiSavage.com Rocks! Posts: 451 Newfoundland NJ	Re: After glow? Reply #1 - 03/14/19 at 16:51:59 Well if that is a Harley muffler that has a catalyst in it, it might be normal. but the short answer is no. But it looks cool!
Back to top	IP Logged

Zook YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 47	Re: After glow? Reply #2 - 03/14/19 at 17:43:28 It is a Harley Dyna muffler and The pipe is wrapped
Back to top	IP Logged

Ruttly Serious Thumper Offline Thumpers Rule Posts: 4997 Manteca , CA Gender:	Re: After glow? Reply #3 - 03/14/19 at 20:15:47 Your carb is most likely LEAN.
Back to top	The Topic Terminator IP Logged

SpamyToo Full Member Offline Posts: 231	Re: After glow? Reply #4 - 03/15/19 at 03:34:14 That wrap really holds the heat also. I melted a pipe with a similar combo you have there. https://photos.app.goo.gl/mEL4VbVr7BQtZmhc6
Back to top	IP Logged

Dave

YaBB Moderator
ModSquad

Offline

SuzukiSavage.com
Rocks!

Posts: 17799
Camp Springs, Kentucky
Gender: male

Re: After glow?
Reply #5 - 03/15/19 at 04:00:14

On the group rides.....I have seen the inside of the Harley mufflers emitting a red glow. The higher the cruise speed....the brighter the glow.

I am sure fuel mixture has some affect, and with or without catalyst likely has an affect as well.

The Harley muffler has an inner pipe with holes and a plate blocking the middle...the exhaust flows out of the inner pipe into the outer chamber, then back through holes and into the inner pipe and out the back. The outer chrome housing has insulation inside that absorbs sound...and also keeps the inner pipe from dissipating much heat outward - so the inner pipe gets really hot. After a bunch of miles....the inner pipes get tired and they break and come loose - and the muffler needs to be replaced. Most of the members on this site will never ride their bikes long enough to wear a muffler out....some of the long term members like Serowbot and MMRanch have worn mufflers out.

Back to top

« Last Edit: 03/15/19 at 06:03:02 by Dave »

Someday I will be old......But not today!

IP Logged

Matchless G11

Senior Member

Offline

SuzukiSavage.com
Rocks!

Posts: 451
Newfoundland NJ

Re: After glow?
Reply #6 - 03/15/19 at 04:04:33

Zook wrote on 03/14/19 at 17:43:28:

It is a Harley Dyna muffler and The pipe is wrapped

Not a fan of wrap, It holds in heat, probably not good for air cooled engines.
One of the paths for heat loss is the pipe, The hottest part of the bike is the exhaust valve, heat reflecting back will just keep it hotter.
There might be some slight benefit in racing but racing is not about stop and go traffic and long life of a motor.

And besides some wraps absorb moisture.
Example, take some semi dry towels balled up out of a dryer and place them on a table leave them for hours. Later they will be still hot and wet in side the ball. Thus same effect with pipe wrap. Rotted out pipes.

Back to top

IP Logged

Zook YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 47	Re: After glow? Reply #7 - 03/15/19 at 13:59:11 I like the look of the wrap and this is not a long ride bike. I have a Vstrom for that. It’s not a ride in the rain bike either for that matter so I am not too worried a the wrap getting wet.
Back to top	IP Logged

youzguyz Serious Thumper Offline Posts: 2522 San Antonio, Texas Gender:	Re: After glow? Reply #8 - 03/15/19 at 14:22:36 I've worn out a LOT of Harley mufflers. Thankfully, I usually get them free my my Harley riding buddies that just HAVE to change out the stock exhaust. Still got 3 spares...
Back to top	2002 - Silver (Thumper) 2000 - Green (Mad Hamish) Most motorcycle problems are caused by the nut between the seat and the handlebars. Make sure yours isn't too tight or too loose. IP Logged

Ed L. Serious Thumper Alliance Member Offline "We All go a Little Crazy Sometimes" Norman Bates Posts: 2808 Sunny Florida Gender:	Re: After glow? Reply #9 - 03/17/19 at 11:13:26 Drill a 1/2 inch hole in the baffle, the pipe will run cooler, sound much better and the bike will love it.
Back to top	Silver '02, clubman handle bars, Cobra headlight, Sportster muffler, K+N stock air filter, 152.5 main, Superbrace, oil cooler, 1/2 inch aluminium plate forward controls, spark advance, goes like stink IP Logged

Zook YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 47	Re: After glow? Reply #10 - 03/29/19 at 13:34:34 I drilled the bafel with a 1/2 inch bit and an extension. I went for a 15 minute ride. It still glows bright red inside. It’s a little louder now. In fact that is about as loud as I would want it. Doesn’t seem to have made much difference.
Back to top	IP Logged

batman Serious Thumper Offline SuzukiSavage.com Rocks! Posts: 3806 osceola new york Gender:	Re: After glow? Reply #11 - 03/29/19 at 16:33:09 I tried drilling a half inch hole in one of my Dyna mufflers and lost the baffle completely in a few thousand miles, had to swap back to a stock dyna , I'm not tempted to try a hole again .
Back to top	my old work mates called me MacGyver IP Logged

batman

Serious Thumper

Offline

SuzukiSavage.com
Rocks!

Posts: 3806
osceola new york
Gender: male

Re: After glow?
Reply #12 - 03/30/19 at 11:22:58

Their is another thing to consider when using the stock header, it's already "wrapped ", that is to say the header is double walled , helping to retain exhaust gas temperature. Placing a cloth wrap over this may be driving temps over the top, and part of the reason your seeing the glow. Where it may prove a benefit to wrap larger custom headers (single layer headers with larger surface areas that cool the gases faster) I would avoid their use on a stock header.

Back to top

my old work mates called me MacGyver

IP Logged

Zook YaBB Newbies Offline SuzukiSavage.com Rocks! Posts: 47	Re: After glow? Reply #13 - 03/30/19 at 14:33:55 Well I have another muffler, had to buy 2. So I guess if or when it goes I will slap on another one. Might as well see how long it lasts.
Back to top	IP Logged

batman

Serious Thumper

Offline

SuzukiSavage.com
Rocks!

Posts: 3806
osceola new york
Gender: male

Re: After glow?
Reply #14 - 03/30/19 at 20:20:47

Well HD Dyna mufflers (used) are reasonably priced, I would be more concerned about the what the wrap is doing to your header. The fact that you can't see it, negates the chance of telling you if it's bluing , which usually means the carb is running lean ,(or very rich) or if it's rusting. Running rich will carbon the motor ,foul your sparkplug ,and could lead to detonation,and wastes fuel , lean will make the motor run hot and could lead to burnt valves ,or cause other damage.

Back to top

« Last Edit: 03/31/19 at 08:31:30 by batman »

my old work mates called me MacGyver

IP Logged