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Author Topic: responsible, practical, and economical muffler replacement  (Read 2073 times)

gremlin

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I ride my Bullet on the beltway to work & back (weather permitting) and was getting embarrassed by the funky colors the old torpedo was turning.
--SO--
after doing a bit of research and scrounging, I have come up with what I believe to be a responsible and practical muffler replacement.
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I recon a 500cc single is about equal to half of a Harley engine.   And, alot of the Harley riders here in the upper midwest like to toss out the stock mufflers (first chance they get).  So, I started combing through the cast-offs at the local Hog dealer.
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I settled on a soft-tail reverse megaphone ** WITH A CATALYTIC CONVERTER **
Yes, call me a greenie ... but, some of my friends work at the D.O.T. .... so, I figured I wouldn't be able to get away without at least attempting to do it right...
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I was rewarded with a slick install (even got to use the stock Bullet muffer mounting tabs).
---------
the attached pics show - the stock muffler after 500 miles, the Harley muffler after 1000 miles, and a fuzzy closeup of the mounting brackets.

 
1996 Trophy 1200
2011 RE B5
1979 XS11 w/vetter terraplane
1981 XS11 streetfighter
1983 Venture Royale
1982 CB750K
1971 Triumph Trident
1969 CB450
1966 Sears (puch) 250


GSS

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Re: responsible, practical, and economical muffler replacement
« Reply #1 on: May 16, 2012, 02:45:54 AM »
Very nice! How does it sound, and any details on cost/etc. would be great!

GSS
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2010 C5 - Teal
It's a Jeep thing......

gremlin

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Re: responsible, practical, and economical muffler replacement
« Reply #2 on: May 16, 2012, 03:27:28 AM »
Very nice! How does it sound, and any details on cost/etc. would be great!

GSS

The sound is very near stock.....  I *think* it might be barking a little more under heavy acceleration ~ but, it seems to be within 2db to my un-trained ear.

As for cost .... I got the "used" muffler for $20 (it was taken off of a new bike before final delivery to the buyer).  The only additional cost was $8 for a set of EMGO adapters.  The pipe needed a .040 shim to allow the Harley muffler to clamp down on it. 
1996 Trophy 1200
2011 RE B5
1979 XS11 w/vetter terraplane
1981 XS11 streetfighter
1983 Venture Royale
1982 CB750K
1971 Triumph Trident
1969 CB450
1966 Sears (puch) 250


Arizoni

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Re: responsible, practical, and economical muffler replacement
« Reply #3 on: May 16, 2012, 04:00:27 AM »
Looks good.

I've been toying around with the same idea but I haven't gotten around to visiting the local Harley dealers yet.
Jim
2011 G5 Deluxe
1999 Miata 10th Anniversary

GlennF

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Re: responsible, practical, and economical muffler replacement
« Reply #4 on: May 16, 2012, 04:51:08 AM »
Sort of suits the B5 as well.

Alan LaRue

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Re: responsible, practical, and economical muffler replacement
« Reply #5 on: May 16, 2012, 02:34:56 PM »
I like it... good job! And thanks for posting.
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gremlin

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Re: responsible, practical, and economical muffler replacement
« Reply #6 on: May 16, 2012, 05:18:21 PM »
Looks good.

I've been toying around with the same idea but I haven't gotten around to visiting the local Harley dealers yet.


In a word,  eBay.     ;)

1996 Trophy 1200
2011 RE B5
1979 XS11 w/vetter terraplane
1981 XS11 streetfighter
1983 Venture Royale
1982 CB750K
1971 Triumph Trident
1969 CB450
1966 Sears (puch) 250


GSS

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Re: responsible, practical, and economical muffler replacement
« Reply #7 on: May 26, 2012, 05:51:05 AM »
Gremlin, Woud you be able to post the part number off the muffler, or at least which year and model of Harley soft tail this came from. I think I might try to find one as well. Thanks.
2014 GT - Red
2010 C5 - Teal
It's a Jeep thing......

ace.cafe

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Re: responsible, practical, and economical muffler replacement
« Reply #8 on: May 26, 2012, 11:10:24 AM »
Perfectly fine idea.
The Iron Barrel Bullet owners have been using Harley mufflers for years.
The Iron Barrel has a 1.75" O.D. pipe, just like a Harley, so the Harley muffler slips right on them without even needing an adapter shim.

I never used one with a cataclysmic converter :o in it, but if you need that for your location, hopefully it won't be too restrictive.
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mbevo1

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Re: responsible, practical, and economical muffler replacement
« Reply #9 on: May 29, 2012, 01:51:34 PM »
I used a "vintage" Harley muffler on my '06 Deluxe - I think it was about $60.00 from JC Whitney... and I got really frugal on my '10 Military... used an Allis-Chalmers tractor muffler from Farm and Home... $26.00 bucks...!!! 

No green stuff in them, though... ;)
Mike and Stumpy and Sherman in Michigan
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john hut

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Re: responsible, practical, and economical muffler replacement
« Reply #10 on: May 29, 2012, 08:25:56 PM »
any of you guys in the UK know the MOT rules regarding no catalytic converter on a machine that had one fitted as standard..........
The reason I ask is that the first year imports of the new EFI engine (2009) are now coming up to test time and many fitted with after market silencers,,,mine included,, its easy enough to change back to standard if need be,but I would rather keep my Goldie silencer
if possible
John Electra Deluxe Efi

Lwt Big Cheese

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Re: responsible, practical, and economical muffler replacement
« Reply #11 on: May 30, 2012, 07:33:42 AM »
The law for cars changed this year. If it had a cat fitted as standard when new it has to have one now.

I have no idea if bike Mot's are the same.

Probably.
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hortoncode3

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Re: responsible, practical, and economical muffler replacement
« Reply #12 on: May 30, 2012, 11:26:59 AM »
Looks great. I've had wonderful results using the HD mufflers on CB 350-360's...great sound for that old engine! I worry that it'll mess up the EFI on my 09 G5...
In other news..I had my exhaust gasket fail on my '09, actually  think it was a failure from the factory really as  never noticed it putt-putting from new..and I chalked the unusual sound to it being a thumper..anyway..the dealer commented on it and I checked out out..YEP..leaking. Ordered 2 new ones, but in the meantime I stuck a Honda metal one in there..had to cut out about a quarter inch to get it to fit but so far so good.!

barenekd

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Re: responsible, practical, and economical muffler replacement
« Reply #13 on: May 30, 2012, 10:11:43 PM »
Quote
The reason I ask is that the first year imports of the new EFI engine (2009) are now coming up to test time and many fitted with after market silencers,,,mine included,, its easy enough to change back to standard if need be,but I would rather keep my Goldie silencer
if possible

Put the stock one for the test, then put the Goldie back on. That'll be an hour of your life that you'll never get back! :'(
Bare
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2011 Black Classic G5 (RIP)
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mattsz

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Re: responsible, practical, and economical muffler replacement
« Reply #14 on: January 14, 2013, 11:29:28 PM »
I guess I'll add to this, since Gremlin brought it to our attention.

Muffler replacement: I assume that the EFI silencer sold by NFG and Hitchcocks doesn't have a catalytic converter.  Is this so?

Hitchcocks says it's only for the EFI bikes - is that because it won't work with the carb bikes, or because the other mufflers won't work with EFI bikes - or both?  Does this make sense?

Without the cat. conv., what effects occur to the bike, re. speed, power, noise, and pollution?  What about engine longevity?

gremlin

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Re: responsible, practical, and economical muffler replacement
« Reply #15 on: January 15, 2013, 12:18:59 AM »
................Without the cat. conv., what effects occur to the bike, re. speed, power, noise, and pollution?  What about engine longevity?

no empirical data exist for the UCE 500 sans converter......
1996 Trophy 1200
2011 RE B5
1979 XS11 w/vetter terraplane
1981 XS11 streetfighter
1983 Venture Royale
1982 CB750K
1971 Triumph Trident
1969 CB450
1966 Sears (puch) 250


Ducati Scotty

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Re: responsible, practical, and economical muffler replacement
« Reply #16 on: January 15, 2013, 01:12:16 AM »
I think it depends on what muffler is used and the character of the bike.  I put on an Emgo reverse cone.  $65 muffler with no cat.  The bike behaves perfectly, no dead spots in the power curve, about the same noise level as stock, same top end, BUT fewer vibes.  Others have put on other mufflers and had poor results.  Someone else may have used the same muffler and it was fine.

Without a cat you will definitely get more emissions.  You may get a little more power from less back pressyre but it seems the major restriction is the header pipe.  Without changing that you're still largely choking the motor.  If you do change that YMMV.  Depending on how your bike is set up and how it was built, it may work well it may not.

All that said, the D&D full system which is a low restriction muffler and header pipe combination seems to have given good results to those few that have installed it and reported it.  I would guess it was also the only one developed on a dyno by a manufacturer just for this bike.

Scott

barenekd

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Re: responsible, practical, and economical muffler replacement
« Reply #17 on: January 15, 2013, 06:54:03 PM »
The catastrophic converter changes the exhaust gases into something else. I forgot what. But getting through all that platinum and stuff makes it more difficult for the engine to breathe. The converter reduces some of the pollution. They will run on an older motor, but why bother? They certainly aren't going to improve performance. Putting some non-cat mufflers on a new bike that came with them will improve performance. However it will lower the clean air signature a bit. And they are a lot heavier than after market stuff. We don't have to get motorcycles checked for smog in CA, so the argument is somewhat moot. However, I will hang onto my stock muffler just in case! It certainly doesn't take that long to change over!
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com

gremlin

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Re: responsible, practical, and economical muffler replacement
« Reply #18 on: January 15, 2013, 07:18:06 PM »
The catastrophic converter changes the exhaust gases into something else. .........

.........Broccoli farts
1996 Trophy 1200
2011 RE B5
1979 XS11 w/vetter terraplane
1981 XS11 streetfighter
1983 Venture Royale
1982 CB750K
1971 Triumph Trident
1969 CB450
1966 Sears (puch) 250


Gypsyjon

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Re: responsible, practical, and economical muffler replacement
« Reply #19 on: January 17, 2013, 11:12:23 PM »
It the cat conv. the reason the OEM muffler weighs like 30 pounds??

I put on a Goldstar that I can see from one end out through the other...nice bark now ;-)
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Ducati Scotty

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Re: responsible, practical, and economical muffler replacement
« Reply #20 on: January 17, 2013, 11:19:00 PM »
Yes, partly.  It's extra stuff that has to go in there and it weighs something.  Also, OEM mufflers need to meet strict noise standards for EU and the USA, so they tend to have a lot of baffling.

Scott

Bullet Bill

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Re: responsible, practical, and economical muffler replacement
« Reply #21 on: January 18, 2013, 01:09:07 AM »
The catastrophic converter changes the exhaust gases into something else. I forgot what.

When the fuel mixture's too rich, you get unburned fuel (hydrocarbons) and excess carbon monoxide.  When it's too lean, you get singed fuel (nitrogen oxides).

Long story short, you take unburned fuel and two poisonous gases (HC, NO2, and CO), and you turn them into something less harmful (H20, CO2, and N2; aka water vapor, carbon dioxide, and nitrogen gas).  Hooray for my old tech manuals.
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barenekd

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Re: responsible, practical, and economical muffler replacement
« Reply #22 on: January 19, 2013, 11:07:13 PM »
Actually the stock muffler only weighs about 11-12 pounds. I've forgotten exactly, but I did weigh it when I took it off the bike. The EFI muffler was 5 or 6 pounds. And did everything better.
Bare
2013 Moto Guzzi V7 Racer
2011 Black Classic G5 (RIP)
I refuse to tiptoe through life only to arrive safely at death
http://www.controllineplans.com