Installed dyna mufflers this weekend. - Kawasaki Vulcan 750 Forum : Kawasaki VN750 Forums
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post #1 of 16 (permalink) Old 04-16-2007, 12:32 PM Thread Starter
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Installed dyna mufflers this weekend.

I had a broken left muffler that was leaking pretty bad. The entire flange on the header end of the muffler had cracked all the way around the weld so the muffler was being held on only by the mount to the footpeg and leaking badly. After talking with JD a few weeks ago, and looking at Dianna's bike, I decided to try the dynas, since they are so easy to get off ebay. I bought a bran new pair for about $41 including shipping. Had to build my own brackets which wasn't too hard. I found some silicone self sticking stretch-n-stick tape that was rated at up to 500 degrees and decided to use that for the gasket. Also bought some new muffler clamps at autozone, big heavy duty ones and file 13'd the old clamps. I left the mufflers staggered for now, like the oem's, just in case I didn't like them. I also left on the goats belly.

When I first got the bike, I drilled the end pipes around the outside. It was better, but not quite what I wanted. A few weeks ago I decided to drill out the baffles in the center, which I had to take them off to do as my drill extension wouldn't hold a bit that size. That's when I found the broken muffler flange. So, even after drilling a 3/4" hole in the center baffles, it still wasn't quite right, sound wise. So, I bought the dynas. While I had the mufflers off, I started up the bike to hear it with just the goats belly. Not a bad loud, but no sound to it. Then I put on the dynas, and I've got to say, I think the sound is exactly right. Not too loud, but a nice low grumbling sound. I am really sold on this mod, both for getting a little more sound and for the low cost replacement. No pics yet, or sound files, but I'll have them eventually.

Fergy
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post #2 of 16 (permalink) Old 04-16-2007, 12:48 PM
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Looking forward to the pictures. Wish there was a good way to make/post sounds files of the different exhaust setups. Besides looks, a lot of people base their choices on the sound.

Curious what your Dyna/goat belly sounds like versus my MAC pipes, versus others Cruizer's, verus stock drilled, stock degoated, etc.

Jon

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post #3 of 16 (permalink) Old 04-16-2007, 02:57 PM Thread Starter
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I have a sound of the cruisers and cobras on my web page, as well as the stock pipes drilled with gb. If someone could send me an audio file, or even a video taped sound of the macs, and degoated etc. I'd make the sound files and post them up. It would be kind of cool to have a sound file in all the different configs. I can convert from vhs, mini dv, and any other digital sound file.

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post #4 of 16 (permalink) Old 04-16-2007, 05:20 PM
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humm, i wanna hear... i may ride down and see ya fergy just to hear the dynas for myself... did you use the flexi muffler stuff or did you have someone make you an adaptor?

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post #5 of 16 (permalink) Old 04-16-2007, 05:26 PM Thread Starter
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No adaptors Hizzo, just straight to the GB like the oem's were, staggered like the oem's too. Left one sticks out about 4-5 inches farther back.

Fergy
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post #6 of 16 (permalink) Old 04-17-2007, 03:18 PM
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Quote:
Originally Posted by fergy View Post
No adaptors Hizzo, just straight to the GB like the oem's were, staggered like the oem's too. Left one sticks out about 4-5 inches farther back.

humm... sounds good... i wonder how it sounds with the GB removed and an H pipe in there . We want pics!! ohh and sound clips

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post #7 of 16 (permalink) Old 04-17-2007, 03:57 PM Thread Starter
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Soon. Maybe this afternoon if I get to feeling better. Got an abcessed molar that they gave me drugs for this morning. Still waiting for the drugs to kick in.

Fergy
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post #8 of 16 (permalink) Old 04-17-2007, 07:43 PM
 
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Good luck with the tooth Fergy! I know they can be painful.
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post #9 of 16 (permalink) Old 04-17-2007, 11:23 PM Thread Starter
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Well, the drugs are helping. I got out and shot a photo, and my son helped me shoot some audio of the dynas. They aren't really much to look at.


Sounds: Take off sound first. (note the coffee grinder noise at the very beginning! Yep, I popped the clutch a little, before the oil had heated up good.)
http://pages.tstar.net/~fergy/images...newtakeoff.wav

Drive by sound:
http://pages.tstar.net/~fergy/images...newdriveby.wav

Listening to the audio clips on the computer, I can't tell a huge difference with the laptop speakers. But riding the bike I sure can.

Fergy
Kyle, TX VN750.com member #707 VROC#19556
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post #10 of 16 (permalink) Old 04-18-2007, 04:02 AM
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That sounds pretty good, Fergy !
My pipes have a few knicks & scratches, and I had thought about replacing them, but I didn't want to spend a whole lot. With the price those pipes go for, just maybe I'll get a set too.

Are they staggered on your bike right now because of the goats belly, or are the Dyna's themselves different lengths? Whatever pipes are on my bike now (maybe Cobra's, but I'm not sure) they are the same length at the back end (w/o goats belly), and I'd prefer to keep whatever I put on like that.

Oh, yeah, to go along with your new pipes Fergy, we have a new name on the portal page.
No more cegodsey. I done booted him outta there with 2044 posts !!!


AKA: Tim & 'The Adventure Cycle' VROC #24567, NEVROC, SteelCity VROC


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Aim for the apex."

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Last edited by hyperbuzzin; 04-18-2007 at 02:25 PM.
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