| Author | Message | ||
     Geforce |
Spent the day sanding the entire can down to bare metal and sanding things smooth. Rigged up a ghetto over spray "tent" and fashioned a light and heater nearby to circulate warm air into the ghetto tent. Sprayed 3 coats of 1200 degree BBQ paint over the exhaust and it is now going to dry overnight. Tomorrow the D&D comes off and is for sale. Muffled Thunder goes on. Video will be up soon.    | ||
| Hdwrenchtx |
what did you do to the muffler? i have a couple laying around i'd like to try to mod | ||
| Geforce |
I don't want to step on D-Adams thunder, so I'll let him explain the rest. We set out with these three priorities: 1. Remove/Replace the factory outlets to large size. 2. Redirect the air flow of the outlets away from the wheel and swing arm. 3. Improve upon the factory sound and retain the stock performance. This was accomplished with a dyno, welder, stainless steel pipe and lots of tinker and cross cuts. The first version failed priority number 3 on the dyno. So we had to try again. The second try worked wonderfully on the dyno and here it is today. Dean can get you some specifics they are listed here in the archives as well. | ||
| Blackflash |
IMHO Seems to be a little pricey to me to have someone cut a pipe and modd it for 325$ and it still wieghs 23 lbs. And it's only tuned for stock . No performance gains? | ||
| Geforce |
My bike and his test bike were both factory mapped O8s. Won't know if we can squeeze anymore power out of this till we start tuning. Hopefully this spring. | ||
| D_adams |
Hdwrenchtx - it started out here -> http://www.badweatherbikers.com/buell/messages/290 431/502642.html?1255188402 That one got archived, so I started a new thread here -> http://www.badweatherbikers.com/buell/messages/290 431/510759.html?1257117368 That one got archived as well, but it's completely documented if you'd like to do it yourself. Pics are all over both threads so if someone wanted to and had the equipment and time, it could be replicated quite easily. Patience, some basic hand/air tools, and a welder and it's done. I wouldn't recommend using a mig welder unless you're extremely good at welding. The sheetmetal is very thin. One thing I think I failed to mention at the very end of the project was the length of the tubing I used. As I recall, they had 6" legs with a 6" radius from a U-J pipe. The OD of the pipe was 1.75" and is made of 304 stainless steel. Btw, I did the documentation to show how it was done, not to advertise for business. Cory wanted something different, I offered to do the welding, etc. This is the result of many hours of work and a few trips to a dyno to verify that no power got lost along the way. I tried to make this as easy as possible for anyone else to copy the work. On a side note, there was ZERO tuning done to my bike throughout all this. It runs exactly the same as a "stock" pipe. It could be tuned with the {o s b} software or whatever you chose to utilize with the same results as a stock muffler. | ||
| Redscuell |
" there was ZERO tuning done to my bike throughout " Unless something happened in the meantime, your last thread showed that nothing's changed except the ENDS of the outlets; that is, the 's' pipes weren't replaced with larger ones, to connect with larger openings into the final collector chamber. Therefore, no actual restriction was reduced or removed; and therefore, there w/b no change in power, and there w/b no change that would call for 'tuning' (which is really only switching off the o2 sensors, remapping fuel to 12-13 or so; and remapping spark, which I've been advised against changing). Unless the dumping of the outlet gases back into the initial damping chamber (caused by your chopping out the 's' pipes) has harmed the fueling. | ||
| D_adams |
Zero tuning in this instance means that I changed only the muffler. Nothing was done for fuel or spark. Bone stock map, 062 flash is currently on mine. Nothing got "connected" inside, just a small 1/8" gap was closed on the rear chamber. The tubing I had on hand turned out to be too short, so I ordered a longer piece. | ||
| Blackflash |
  I personally like to have some lenghth on my turnouts.I had mine mounted 90 degrees off the muffler and found the exhaust gases chocking me and the old ladie out sometimes.I mounted mine 75' to 78' off the pipe.it still aimed back some what and blew it behind us.Also note the length of the 304 ss tubes are still stock length.  |
