Exhaust question

[jrb]

I have cobra 6 x 6 ehaust, timing advanced 6 degrees. My problem, going to take a long trip and the bike is just too loud. Can I install stock exhaust without changing timing back. Also the carbs may have been rejetted, if so will this need to be changed. Thanks to anyone who can help.

[Chillerman]

You don't need to change the trigger wheel.  As far as rejetting I thought it was only a needle change but I'm not sure.  Someone is sure to answer that.

[Patrick]

Have the carburetors really been re-jetted?? Generally just needles are installed.. If thats the case, you can easily lower the needles..

[98valk]

wrap your baffles http://www.azom.com/details.asp?ArticleID=236   will quite them down, enough?, only u will know. or any exhaust muffler packing will work. the link is a much more durable industrial product.
as patrick stated only needles, lower them for oem exhaust by raising the clip usually one notch.

[2qmedic]

Guess I need to find some way to have a link for this mod.

Ok, I have a possible solution for you.
 
I have done this on my bike. I have the Cobras 6x with baffles.
 
1-Take out the baffle.
2-Use 2 stainless steel scouring pads. (got mine from the dollar store) They are
wound up in a coil.
3-Stretch two pads over each baffle (for the Cobra baffles).
4-Use some .032 or .040 wire (or some type of wire) and wrap it around the pads.
This will help compress the pads as to not be so puffy when reinstalling back
into the pipe. (learned from school of hard knocks)
5-Reinstall baffle. (If I did again, I would use some type of oil or lube in the
pipe to help get them in again. It will burn off.)
6-Take it out for a ride.
 
If not quiet enough for ya, go another step.
 
7-Take the baffle to an automotive store and buy freeze plugs that will fit over
the end of the baffle exhaust port.
8-Drill a 3/4 hole (same size as the orignal piggy) and then attach it with a
bolt, weld it or however.
Note: With the 3/4 inch hole, I know that I have not exceeded the stock mfg back
pressure. I did try a 1/2 inch hole, loss in pwr. 5/8 may be doable, didn't
try that size.
 
The volume at 50mph is now the volume at 75ish. Needless to say that the orignal
sound level at 75 was just way too loud. It was worth it for me. Will still wake up the neigbors, but not the whole town.

Hope this helps,
Cheers 

[PhredValk]

So, say I have a set of 6x6 pipes (Cobra or 2 brothers, I don't know). How would I tell if they have baffles? They're all bendy in front and turn out in back...
Fred.

[R J]

If they turn out in the rear, they are more than likely 2Brothers.

Cobras are straight out the back.

[2qmedic]

And..... if they are straight out back, look inside the tail pipe. If there is a baffle, you will see it. If not, it will be just a dark hole.

[Mildew]

My cobras arn't very loud. Everyone always compliments on the way the bike sounds. Unlike a bike and more like a fast car. In high gear I can barley hear it.