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  #1  
Old 09-24-2013, 01:00 PM
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Default ASW Carbide muffler gutted

I decide to start this thread on the ASW exhaust gut since I didn't find any info specific to my machine's muffler insides.
I wanted some more flow, so originally I just removed end cap and drilled 3 additional holes.


It didn't really give me the results I had hoped for. It did just let a small amount more of exhaust escape and I had a little more noticeable difference in sound.

After asking questions, reading info, and taking advice I decide to go forward with the gut.

after removing muffler and heat shield I drew and numbered 4 lines on it to help me realign it properly when it is time to weld back together.



I then used my angle grinder and cut behind the end cap; right behind manufacture weld. This is what the inside looks like so far. Just a restrictor plate.



I will continue the project later and document it for those who need. Kids are whining
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File Type: jpg IMG_0276.jpg (94.1 KB, 98 views)
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Last edited by 2SlickNick; 09-24-2013 at 01:12 PM.
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Old 09-24-2013, 05:49 PM
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I tried to just bang out the tack welds holding the restriction plate in place. That didn't go as smoothly as I thought. Between long flat head screw driver, pry bar, hammer, needle nose pliers and tin snips I got it removed. If I had a dremel I could clean it up better. Better it should be okay.


There appears to a baffle in there and two other holes to another restriction plate possibly. I thought it was card board; wrong.... metal baffle.
trying to remove. Wife standing here will post later
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Old 09-24-2013, 07:21 PM
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dang kids whining, the boss standing there, I can see why you had to go . lol
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Old 09-25-2013, 09:19 AM
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That metal baffle is removed. Banged it out for a while, but it is out. Those 2 holes in the back don't do anything but back pressure I believe. So that plate will stay. It is about 1-2 further back than where the exhaust header exits in muffler.

I also cut an extra inch off the end cap pipe on the inside. I decided not to make the exit hole bigger so I can keep some back pressure.

Hopefully I can get it welded back together by tomorrow or the weekend. I will let you know results and post video of sound.
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Last edited by 2SlickNick; 09-25-2013 at 09:23 AM.
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Old 09-25-2013, 09:44 AM
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Quote:
Originally Posted by zman007007 View Post
dang kids whining, the boss standing there, I can see why you had to go . lol
She is always complaining about me and the time I spend with the buggy. Lol.
But she love riding it.
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Old 09-25-2013, 12:23 PM
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The inside looks good, leaving the outer portion of the resonating material will result in a lower tone and won't be too obnoxious. If you want to leave the tailpipe section on the cap, then at least cut the inner portion of the small pipe off. Additional back pressure is not needed on 4 stroke engines, and leaving that pipe on the inside will only cause turbulence inside the can, and will likely flow no better than before. The smaller hole, however, will add just enough restriction that it won't harm the torque curve of the engine.

That honeycomb looking piece appears to be a low grade catalytic converter, which is used to clean up the exhaust chemicals. Hard to believe they are hitting our buggies with them now.
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Old 09-27-2013, 07:39 PM
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Well it is complete. I didn't get the last inch off the inside of the cap
or drill out the 3/8 inch exit hole. I didn't have a hole saw bit and my buddy came over with the welder sooner than I thought.
It does sound great ( deep tone)without being annoying, deafening, or obnoxiously loud. I thought by gutting it I would be done jetting down. Looks like I will be ordering a 122,120,118.
124 is still too rich
I hope that does it; because I miss riding and fall weather is great for riding.
Also...I am so damn tired of trying to find the right jet size.





http://www.youtube.com/watch?v=vDIU0A1hMjU
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File Type: jpg IMG_0307.jpg (87.5 KB, 104 views)
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Last edited by 2SlickNick; 09-27-2013 at 07:42 PM.
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Old 09-29-2013, 01:12 PM
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http://www.ebay.com/itm/VHT-High-Tem...-/231057691842
Thinking about paint the exhaust pipe red. Oh yeah!
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Old 09-30-2013, 12:04 PM
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Well I went ahead and did it. I used my wire wheels and removed surface rust, used degreaser and brillo pad, and cleaned it up for paint prep.

The only red that was available was flat red, but I still like the way it looks.

In the process of curing it now; right on the buggy.
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File Type: jpg IMG_0311.jpg (99.3 KB, 38 views)
File Type: jpg IMG_0313.jpg (92.2 KB, 39 views)
File Type: jpg IMG_0316.jpg (93.7 KB, 37 views)
File Type: jpg IMG_0318.jpg (93.5 KB, 42 views)
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Old 09-30-2013, 07:52 PM
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I'm thinking I like that! nice to see a color rather than the typical old flat black. Flat black was always used because it dissipates heat best but a little color sets it off.
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Old 10-01-2013, 01:14 AM
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Thanks I thought it looked pretty Slick....too.
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Old 10-01-2013, 05:55 AM
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Kinda reminds me of the old Cherry Bomb glass packs.
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  #13  
Old 10-01-2013, 06:47 AM
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Lol ya it does.
This product at advanced auto had about 5-7 color choices at $8 a can.
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Old 10-05-2013, 09:21 PM
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Yeah man, pimp my ride!!! lol just kidding, nice low budget mod!
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Old 10-12-2013, 06:45 AM
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Quote:
Originally Posted by 2SlickNick View Post
Well it is complete. I didn't get the last inch off the inside of the cap
or drill out the 3/8 inch exit hole. I didn't have a hole saw bit and my buddy came over with the welder sooner than I thought.
It does sound great ( deep tone)without being annoying, deafening, or obnoxiously loud. I thought by gutting it I would be done jetting down. Looks like I will be ordering a 122,120,118.
124 is still too rich
I hope that does it; because I miss riding and fall weather is great for riding.
Also...I am so damn tired of trying to find the right jet size.





http://www.youtube.com/watch?v=vDIU0A1hMjU
still too rich due to bad enrichment valve. BBK soon to come I guess some of the pics didn't come through, but you can see them using iphone.
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Last edited by 2SlickNick; 10-12-2013 at 06:57 AM.
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