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Ok I've never tried to explain how I moded something. I build things in my head first then just go out to the shop and make them. I did this mod in the March of 2011 so nine months ago and I'm pulling this out of my memories so please bare with me. I read all the post I could find online on how to take these cool mufflers. And give them that ruff boy sound. I did get a pair of those big city thunder baffles. Nice sound So get them or something like them. They need to fit inside a 1 /34 x 33 inch aluminizes muffler pipe. Get it from your local muffler shop get the best grade they have. You will need to make two rings made of thin plat steel 6 x 8 inch's. Home Depot has a metal rack. Inside ring diameter 1 3/4 outside ring diameter 2 1/2 I also needed my mig. And my dermal with 6 diamond wheels. And two sanding drums. A stander size 1 3/4 hole saw. 1 1/2 x 4 inch wood doll. I used a heavy thick weave fiber glass a peace 30 x 32 inch's. Stainless steel screen 10 x 26 inch's local farm supply or port town or fasteners shop. And two stainless steel hose clamps. ( Per muffler) Two cans of VHT flame proof 1300- 2000*F silica ceramic paint I use flat black. Oh yea my big bad a** plumbers Vice. I have been restoring old English Bikes for 39 years. My main Bane in life is not being able to find original parts. So any of the mods I would try to do on my Muscle I go and buy other parts. I found these mufflers on e-bay. I look for a few weeks found a nice pair $160 bucks sent. My stock pristine mufflers are now in all that wrapping and heavy duty boxing the e-bays ones came in. I put the Muscle's serial # all over the box's.
Put some pads down on the vice and clamp in one of your mufflers into it tight. And put it so you can have good room to the rear end of the pipe. Get a chair your going to be here for some time. Take the rear tip outs off put them away you wont need them for awhile. Put a diamond wheel on the dermal and cut off the retaining ring that holds the tip out on by cutting the four welds off. The ring falls right off. Then take a marker and draw 16 or more lines. Four from the corners and three lines or four in between these corners lines. Use the same diamond wheel to now cut these lines. This is the most time consuming part. When lines are cut put your wooden doll rod in the end of the tail pipe. Use a rubber mallet hold the muffler and beat the doll rod in tighten so it dos not move. Now cut off the end of tail pipe so only 1 1/2 inch's is left out the end of the muffler. Pre drill center of doll rod a little bigger then the pilot drill in your stander 1 3/4 furious bit hold saw. I used my Battery powered drill motor you don't need to drill off the weld off the tail pipe vary fast take your time. Your hole saw should fit snug just over the tail pipe. You will need to peal back the fingers you have just cut out. Then take a drift and tap them straight out. They need to be flush with the inside insulation. Don't hit too hard or slip you could ding the outside of the muffler. You can use your dermal tool to open up the outer ends of your cuts you will not be welding anywhere near the outside of the muffler pipe. Just the tips of your fingers to your new tale pipe. If you don't get them bent out all the way before you try to pull the stock baffles out. You will find a tight fitting plate cup at the inside end of the stock baffles it could piss you off be for warn. So now you got a baffle out I hope it did not take as long for you as it did form me. Well prototyping dos take time. It's all easy from hear no. I did not want to drill a hole to mount the big city thunder baffles. So I put the baffle to the grinder and started to take off the spot welded threaded plat as soon as it got cherry it popped off the welds. I now have a hole I can weld to the inside of the new pipe. To do this I had to take off one of my stock muffler and put a hollow out one on. I use the VHT to spray the inside of the front muffler pipe as to mark just how far the down tube came inside the muffler. I put a sanding barrow on the inside foreword part of the baffle tapering the ridge down smooth. Did the same to the new tail pipe. I put the baffler about 1/2 inch inside the new tail pipe and welded it in to place then file the weld and sanded it smooth. I used my needle nose vice grip with the tips wrapped with tape to make a stop in the front of the muffler were the down tube marks in the paint is. Slid the new tail pipe inside the muffler to the vice grip. Use a small square and put inside of the hollow out muffler shell. From the point were your fingers come from the shell. And make a mark on the new tail pipe. So I had some room for expanding and contraction I added 1/8 inch to that line on the inside. This is were you weld your thin plat ring you made and you weld it only on the inside of the ring. The baffler is built so you would have felt when you inserted the new tail pipe into the muffler it was loses I spent the next few days putting five good wet costs of VHT paint on the front outside 3-4 inch's of the new tail pipe. And on the inside front of the gutted out muffler just pass the dry painted marks the down tube made. And paint all your welds and sanding good. So now we just have to wrap it so cut your fiberglass to size 30 inch's wide 32 inch's long. I did this by myself but the next step would go easier if two did it together. Wrap the glass around the tail pipe butt up to the inside of the ring tight now wrap the stainless steel screen around it. Now put the stainless steel hose clamps over the screen and tighten to good and snug. Put some red locktite on the hose clamp threads. One last big wet cost of VHT on inside of muffler and on tip of new tail pipe. Take your vice grips again and make a new stop for your tail pipe. Go in that 1/8 inch further then the down tubes marks were. When I inserted the pipe into the muffler I gave it a counter clock wise quarter turn down to the stop. Then bend all the fingers back down to the new ring and put your end caps tip out retainer ring over tailpipe and aline with tip out so the alan head bolts holes all line up so the tip out fit well. Take off tip out and press down the ring hold with vice grips. And weld the two rings together down through the fingers. Shield your work from your welding good. My Muscle was only down for an hour and a half to make one mark. I gave the new moded mufflers a few days to set up the paint. I still mite cut the end of the new muffler on an angel to mach the tip outs. I have fancied myself as an English tuner. But I cant tune my Muscle so the first thing I got for her was her new zipper brain. A few months later I was up on top of Mount. Rainier And drop the clutch on second gear at a 10 mph roll got at lest a 25 feet smoking burn.To the cheers of all the tourists getting on and off the bus's. At over 10,000 feet I was proud. Right after riding her you can put your whole palm of your hand on your new muffler its not hot. If you let her set a few minuets she gets hot put your finger tip on the pipe two three seconds pull it away you do not leave any Flesh behind. I have just taken the tip outs off my muscle I put over 6000 miles over pass 9 months. And no sine's of blow back through the finger slots. I left them open just in case. I know I went through a quart and a half of Ames oil in that time. I think it would have shone if it leaked.
 

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Discussion Starter #2
:lamer:
 

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Discussion Starter #3
I Found it
 

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Discussion Starter #8
I wish I new how to get the photos that I already up loaded to this site on other posts. To be able to repost them again. I tried to post all of my Mods on are How To section. To make them easer to find. But I could not re up load any photos I've already uploaded. I tried to copy and paste and every thing else I could think of ? The best I can do is post a link to the posted photo. If anyone knows how to do this I for one would be very thankfully and I would take the time to repost all my mod in one spot. The rest of the photos to this mod are on another post I have set link's to this post. Thanks just stared to re post photo
 

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Hay thanks lastinline I have tried to rename them, relocate them even cropped then smaller with different names on a different Drive. Still this site of are's knows? And tells me that this photo has already been up loaded. And I cant do anything else with them ? I'm sure I just don't know what to do. This is the only site on the Internet I have ever interacted with so a big lack of experience.
 

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F2NV
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please see new thread about reposting pics
 

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i thought it was to much work so i bought some universal mufflers from a muffler shop for a 180.00 bucks they slid right on the factory head pipe i just had to weld brackets to bolt it back in the factory spot looks pretty sweet an sound great i think.u can see them in my alum pics
 

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Discussion Starter #15
It is more time consuming then hard. To me hard is taking a slagehammer to a driveway that was poured in the wrong time of the year. And now its flaking and needs to come out. This mod takes no really arm strength to do. If you think you want to try this mod PM me and I will give you my phone number and talk you through it. As you can see and hear it can be done it was $130 for the baffles $80 bucks for the rest of the materials. You will need a good vice and a welding machine. I am putting a link to a video on the sound of this mod to this post. (
) Ride Safe Brother's
:ride:
 

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Nice work...
 
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