Author Topic: STOCK EXHAUST MODIFICATIONS  (Read 5161 times)

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Offline thundermax

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STOCK EXHAUST MODIFICATIONS
« on: December 15, 2012, 08:07:55 AM »
Surveying the membership and asking "Have you ever modified a stock exhaust? Have you ever taken off the end, taken out anything, put is back together, and had a slightly more muscle sound? >:D
Riding since 1966 at 13. Just purchased my tenth bike in my life. Now have two at same time. 2009 C14 and 2012 C14. Here are bike I have owned: 1958 Cushman model 721 Highlander, 1960 Cushman Super Eagle, 1971 Honda SL 100, 1974 Yamaha RD350, 1975 Honda 750 Four, 1971 Honda SL 175, 1998 Vmax, 2005 Vmax, 2009 C14, 2012 C14. COG#11056, South Central Area, Oklahoma.

Offline oldnslo_MO

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #1 on: December 15, 2012, 11:57:20 AM »
no... :)
happy trails  09 concours14* 75 kawasaki H1   500cc*79 triumph bonneville750* 2 each  82su zuki gs1100e* 05 yamaha fz1 1100* 03 yamaha fz1 1100*01 goldwing 1800*97 goldwing 1500* 93 goldwing 1500* 80 kawasaki vulcan 1500*76 kawasaki kz650* 66 triumph Bonneville 650* 68 triumph tr 650* 72 norton commando750* 70 bsa rocket III 750*  68 hon cb350* 66 hon cb305*1960 BSA golden flash 500cc*1950 cushman

Offline Larry

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #2 on: December 15, 2012, 02:00:01 PM »
Don't do it Davie....replace it.  Don't bother.
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Offline Glenn

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #3 on: December 15, 2012, 02:23:50 PM »
I guess you try to make it sound better.  Doesn't help with the looks any.  ::)

Offline ZG

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #4 on: December 15, 2012, 05:25:10 PM »
I guess you try to make it sound better.  Doesn't help with the looks any.  ::)

 :iagree:

Offline Fred_Harmon_TX

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #5 on: December 15, 2012, 05:54:01 PM »
There have been several folks who have taken the stock muffler apart and shortened it significantly. All the reports I've seen have indicated that it didn't change the sound at all, but made it look a lot better. I think they cut about 6 inches or more off it. There were several threads about this on the old board back in 2008/09 before it "crashed". Haven't seen any recently.  I believe they were taking it apart and cutting out the flame arrestor and removing a section from the front of the muffler and then TIG welding it back together.

Offline thundermax

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #6 on: December 15, 2012, 06:33:43 PM »
Ok mod it does not work. What are the alternatives and costs?
Riding since 1966 at 13. Just purchased my tenth bike in my life. Now have two at same time. 2009 C14 and 2012 C14. Here are bike I have owned: 1958 Cushman model 721 Highlander, 1960 Cushman Super Eagle, 1971 Honda SL 100, 1974 Yamaha RD350, 1975 Honda 750 Four, 1971 Honda SL 175, 1998 Vmax, 2005 Vmax, 2009 C14, 2012 C14. COG#11056, South Central Area, Oklahoma.

Offline mehush

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #7 on: December 15, 2012, 07:06:41 PM »
There was a recent thread about a Delkevic (sp?) slip-on that was reasonably priced and got favorable feedback.

I'm not a fan of the stock exhaust as far as looks or sound goes. But you know what they say.........it's hard to shine a turd. If I had plenty of expendable cash I would replace it. As it sits(stock), the bike performsjust fine..........and I guess I'm OK with that.

Offline nando

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #8 on: December 15, 2012, 10:38:42 PM »
If it don't change the sound it might be worth getting rid of a couple pounds. I was surprise how heavy that thing is.
I am voting for anyone who wasn't there during the government shut-down.

Offline PaleRider

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #9 on: December 16, 2012, 04:40:10 PM »
I took some bad advice from ST-Owners and drilled out the mufflers on my ST1300!!!
Worst sound ever >:(  like a scooter with a hole in the muffler!!  Had to ebay a used set of factory mufflers.
Leave it till you can afford what you want.

BTW I have also heard good things about Delvic.

« Last Edit: December 16, 2012, 08:01:18 PM by PaleRider »
Have Owned 2004 Honda VFR, 2004 Honda ST1300, 2000 Triumph Sprint ST.
Now 2012 ZG1400 in Pearl Arabian Red

Offline Pistole

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #10 on: December 16, 2012, 06:16:13 PM »


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Offline nando

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #11 on: December 16, 2012, 07:22:49 PM »
Wow! that is some hearty work there...I 'll be sending you my muffler shortly here Dog!!!  :)

If it does'nt change the sound it should be worth it..."quiet" is my friend...

between the bikes, jets, and guns, my ears have had all they can handle...I can't even hear myself think these days.
I am voting for anyone who wasn't there during the government shut-down.

Offline Bruce

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #12 on: December 16, 2012, 09:17:52 PM »
That looks good! I'm saving my nickels for a new exhaust, so in the meantime, all I've done is paint the silver ends black.
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Offline Fred_Harmon_TX

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #13 on: December 17, 2012, 06:04:18 AM »
Thanks for reposting those photos. I believe several folks have successfully shortened the muffler by cutting it like that, and it does make it look a whole lot better. Reports I read indicated it didn't change the sound, just made it smaller so it didn't stick out the back end so far.

The weld under the rear cap has to be ground off so the muffler core can then be pulled out of the outer casing. The section that gets cut off is the flame arrestor section off the FRONT end of the muffler core, and then the same length has to be cut off the REAR section of the outer casing, being careful to match the original cut angle, and the muffler internal core is then slid back in the outer casing and it has to be TIG welded back together at the rear when you're done.
« Last Edit: December 17, 2012, 06:20:11 AM by Fred_Harmon_TX »

Offline Glenn

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Re: STOCK EXHAUST MODIFICATIONS
« Reply #14 on: December 17, 2012, 06:41:59 AM »
If you are patient, you can sometimes find deals here on the COG Emporium.  I found a little used Two Bros. slip on for $250 plus shipping, and a friend of mine got a CS ONE shipped for $325, so good deals are out there, if you look for them.