Exhaust clip - Cobra Swepts w/ modified baffles.
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Thread: Exhaust clip - Cobra Swepts w/ modified baffles.

  1. #1
    Very Active Member Big-B's Avatar
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    Exclamation Exhaust clip - Cobra Swepts w/ modified baffles.

    Finally got around to doing this. (Harris, this is what we need to do for your pipes, video)





    The baffle modification was copied from sorge109
    Here is what I did w/ the baffles.
    As far as the baffles go, you can def put them on a belt sander so they will slide right in. That's what I did. Don't need to spend the money on the Monsters. Oh and the pipes are much louder then the video lets on.
    Here is what the stock baffles look like before cutting



    Cut the closed end of the baffles off so they look like this


    Next, take a hole saw, 1.5" and cut out the baffles so they are straight through




    Then, get some fiberglass wrap, I bought this from Napa


    Get some aluminum window screen and wrap the baffle, this will keep the cloth from being sucked through the holes. I used safety wire to secure the screen.


    Cut a strip the same width as the baffle and wrap them so the cloth is as thick as the outer diameter of the baffle. I again used safety wire to secure the packing



    Then they are ready to go back in the pipes. Keep in mind the baffles are pipe specific. Because of the arch, they are slightly different and not interchangeable.

    I also ran the contact areas of the baffles where they seat in the pipes on a belts sander and took some metal down so they would slide in and out of the pipe w/o any trouble.

    I ran my Swepts for a year and a half w/o baffles before doing this mod. It's still plenty loud, but had a deeper, nicer tone. Sounds great!!!
    Last edited by Big-B; 04-08-2013 at 11:02 AM.

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

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    Very Active Member SS's Avatar
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    Great idea, looks good, it will be interesting how long the aluminum screen and fiberglass cloth last. I installed 1250 degree pipe insulation around my baffle, it lasted 2 weeks and was gone, keep us posted.
    2008 M109R2, "SS" Theme, 69 Camero Hugger Orange Paint, Raw Pipe, Thunder air, Cobra Pro Auto Tuner, 260 / 160 Metz's, Chrome Stock Wheels, Seat by Abe, 2" Bar Ext, Barons Fender Eliminator, Squirrel Chrome Cover, Chrome Fork Covers,M50 Floorboards, Rear Caliper Relocate, All S/S Braided Lines, Lowered Front, L&M Chin Spoiler

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    Sounds great that way. Let me know when you want to video my freedoms.

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    Sounds great Bernie, Nice job




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    Very Active Member Landlubber's Avatar
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    Hey Bernie, I just noticed in your new sig. pic . . . you let Paul Sr. take your bike for a ride?
    "I used to think I was indecisive, now I'm not sure . . . "

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    Very Active Member TRod's Avatar
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    Quote Originally Posted by Big-B View Post
    Something cool I noticed watching the video. When you hammer the gas, watch the bike squat then raise between gear shifts.
    Uh, sorry B, it's just the opposite. Look a little more closely. The bike rises when on the gas and squats between shifts. It's called "shaft jacking" and is common with driveshaft bikes and is caused by the pinion gear climbing the ring gear.

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    Very Active Member Big-B's Avatar
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    Quote Originally Posted by BigpapaM109 View Post
    Sounds great that way. Let me know when you want to video my freedoms.
    Will do, working OT this weekend and w/ the heat, no idea what I'll be doing in my off time. Probably sleeping and staying cool.

    Quote Originally Posted by TRod View Post
    Uh, sorry B, it's just the opposite. Look a little more closely. The bike rises when on the gas and squats between shifts. It's called "shaft jacking" and is common with driveshaft bikes and is caused by the pinion gear climbing the ring gear.
    OK dickhead, I'll give ya that. But the thread is really not about that. So go ruin someone elses thread! Oh and I know why it does it, but thanks you putz! Ok, I edited my post, happy now?
    Last edited by Big-B; 06-29-2012 at 03:35 PM.

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

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    Very Active Member sorge109's Avatar
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    Quote Originally Posted by SS View Post
    Great idea, looks good, it will be interesting how long the aluminum screen and fiberglass cloth last. I installed 1250 degree pipe insulation around my baffle, it lasted 2 weeks and was gone, keep us posted.
    If Big B did it with simular materials ( it looks like he did ) as I did , I am on 2 years now and havent had to repack. The design of the baffle doesn't put alot of stress/or direct flow to the cloth. if you look at his pic there is a dead space between rings that the baffle breaths into, this is where the packing is.
    <img src=http://i870.photobucket.com/albums/ab261/sorge57/IMG_20101104_175226.jpg border=0 alt= />

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    Very Active Member sorge109's Avatar
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    great post B!
    <img src=http://i870.photobucket.com/albums/ab261/sorge57/IMG_20101104_175226.jpg border=0 alt= />

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    Very Active Member Big-B's Avatar
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    Quote Originally Posted by sorge109 View Post
    If Big B did it with simular materials ( it looks like he did ) as I did , I am on 2 years now and havent had to repack. The design of the baffle doesn't put alot of stress/or direct flow to the cloth. if you look at his pic there is a dead space between rings that the baffle breaths into, this is where the packing is.
    Yup, I used the same materials you told me to.

    Quote Originally Posted by sorge109 View Post
    great post B!
    Thanks Randall, great mod for the pipes. I owe it all to you!

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

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    Very Active Member TRod's Avatar
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    Quote Originally Posted by Big-B View Post
    Ok, I edited my post, happy now?
    Nope. Not possible. I'm just Mr. Doom and Gloom.

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    Radio Active Member Zoom's Avatar
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    I did something similar to my Swepts right after getting them. I didn't remove the front, just the center disc. Then I used screen wire and regular baffle wrap on them.






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    Very Active Member jhardy's Avatar
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    Default I thought so too

    Quote Originally Posted by L
    andlubber;1658661
    Hey Bernie, I just n

    oticed in your new sig. pic . . . you let Paul Sr. take your bike for a ride?
    :agreeablei
    IF IT AIN'T RED........LEAVE IT IN THE SHED

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    Very Active Member GassGuzzler's Avatar
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    Thanks B awsome post I think I will try the moded baffel now all I need is the mounting bracket and the hardware lol
    ]

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    Very Active Member Big-B's Avatar
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    Quote Originally Posted by GassGuzzler View Post
    Thanks B awsome post I think I will try the moded baffel now all I need is the mounting bracket and the hardware lol
    No problem bro, just remember the baffles are location specific. So if you take them out, mark them.

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

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    Very Active Member GassGuzzler's Avatar
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    Quote Originally Posted by Big-B View Post
    No problem bro, just remember the baffles are location specific. So if you take them out, mark them.
    Dumb question time? you mean mark the inside of the pipe for placement right?
    ]

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    Very Active Member Big-B's Avatar
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    Quote Originally Posted by GassGuzzler View Post
    Dumb question time? you mean mark the inside of the pipe for placement right?
    LOL no mark the baffle itself as to if it came out of the upper or lower pipe.

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

  20. #18
    Radio Active Member Zoom's Avatar
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    And have fun getting the suckers back in so they line up with the hole in the outer pipe too. That's why it's important to sand them so they fit, because you'll need to twist them some once they are in there.

    I never noticed mine were different top to bottom, maybe I got lucky the 2 or 3 times I've had them out.






  21. #19
    Very Active Member Big-B's Avatar
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    Quote Originally Posted by Zoom View Post
    And have fun getting the suckers back in so they line up with the hole in the outer pipe too. That's why it's important to sand them so they fit, because you'll need to twist them some once they are in there.

    I never noticed mine were different top to bottom, maybe I got lucky the 2 or 3 times I've had them out.
    Exactly! Yeah, you must have been lucky Mike, cuz they are def slightly a different arc. If you look hard enough, you can figure out which goes where, cuz I didn't mark them when I took them out.

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

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    Radio Active Member Zoom's Avatar
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    You know, maybe I did keep them layed out so I knew which pipe they went in to. I'm kind of anal about doing things like that, I like putting nuts back on the same bolts they came off of, putting bolts back in in the same order I took them out, etc. Just never had a good reason not to.

    But I also bought a used pair for mine to modify, so maybe I just got lucky on those. I remember having to put them in a couple of times to get them to line up with the mounting hole, because they tend to rotate a little as they go in.






  23. #21
    Member Joe Dirt's Avatar
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    Do you think it would still work OK just modding the baffles by cutting them and not wrapping them?

    2007 Black M109R - Cobra Swept Exhaust, more to come..

  24. #22
    Very Active Member Big-B's Avatar
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    Quote Originally Posted by Joe Dirt View Post
    Do you think it would still work OK just modding the baffles by cutting them and not wrapping them?
    the wrap is what makes the deeper sound. you can try it, see how it works. doing the wrap is easy.

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

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    The 1st video sounded like stock swepts to me, but the 2nd video sounded bad-ass as hell!

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    Very Active Member Big-B's Avatar
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    Quote Originally Posted by grampi View Post
    The 1st video sounded like stock swepts to me, but the 2nd video sounded bad-ass as hell!
    Might have been camera position cuz the first one was w/ the modified baffles. I used my GoPro for the first one and the second was w/ my phone
    Last edited by Big-B; 04-08-2013 at 11:50 AM.

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

  27. #25
    Very Active Member hanselhoff's Avatar
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    do you think wrapping the thunder monster baffles will do anything? maybe just a deeper sound?
    debadged, debeaverd, custom licence plate, cobra swept pipes, thunder mfg twin hyperchargers, Power Commander, powder coated black wheels,250 E-3, Arlen ness Mirrors, Big City Thunder Baffles, powder coated forks, kuryaken iso-grips, kuryaken front and rear pegs, Suzuki gel seats, yani shiki tach relocator and other little do-dads!!
    I'd rather be homeless than chromeless!!!! ,

  28. #26
    Very Active Member Big-B's Avatar
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    Quote Originally Posted by hanselhoff View Post
    do you think wrapping the thunder monster baffles will do anything? maybe just a deeper sound?
    I don't think there's enough of a baffle to wrap anything but why would you want to?

    IT'S NOT ABOUT HOW FAST YOU GET THERE, IT'S ABOUT THE RIDE ITSELF. TAKE YOUR TIME AND ENJOY IT!!

  29. #27
    Very Active Member hanselhoff's Avatar
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    just to see if I could get a deeper/louder/more grizzly sound... maybe even generate a little more back pressure.
    debadged, debeaverd, custom licence plate, cobra swept pipes, thunder mfg twin hyperchargers, Power Commander, powder coated black wheels,250 E-3, Arlen ness Mirrors, Big City Thunder Baffles, powder coated forks, kuryaken iso-grips, kuryaken front and rear pegs, Suzuki gel seats, yani shiki tach relocator and other little do-dads!!
    I'd rather be homeless than chromeless!!!! ,

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    i have no choice but to do this to my 9. i rode with my buddy and his m90 the other night, he gutted his stock pipes and his modded 1500 sounded way better than my cobras on my 1800. thats just wrong!

  31. #29
    Very Active Member hanselhoff's Avatar
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    I think im going to try it and post the results up here this weekend.
    debadged, debeaverd, custom licence plate, cobra swept pipes, thunder mfg twin hyperchargers, Power Commander, powder coated black wheels,250 E-3, Arlen ness Mirrors, Big City Thunder Baffles, powder coated forks, kuryaken iso-grips, kuryaken front and rear pegs, Suzuki gel seats, yani shiki tach relocator and other little do-dads!!
    I'd rather be homeless than chromeless!!!! ,

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    did mine last night. took 2 hours. still not the sound i want. i think i need pipes with fatter tubes...get more echo and a deeper sound. plus when i let off the throttle and coast in gear the pipes just purr...i want a roar. the cobra swepts look nice but overall i dont really like them. any good suggestions?

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