Exhaust silencer fitting

When I fit my silencers I can't seal them completely unless I use a smear of RTV on the end of the header pipe first, it tends to bunch up though as you push the silencer on, many clamps seem to bottom out before they've applied enough pressure on the joint, how are other members tackling this?

Had the same problem. I got some clamps that fit. Though some times you can remove some material from the inside of the ends of the clamps so as to allow them to close more fully.

I've bought some Harley wraparound type clamps to use but the problem seems to be the size of the slits in the end of the pipe, you can pull them in at the ends with the clamp so that they're secure but they're not sealed and puff through the exposed part of the slit that's behind the clamp, if that makes sense!

I used aluminum tape that HVAC guys use on their duct work. Not the stuff with the strings woven in. This is very thin aluminum with an adhesive backing. It is rated to 325 degrees. I put it on my son's bike about a month ago no problems have shown up. I tested the area with a digital thermometer to find the max temp. after a good run. It came in at about 200 degrees at the muffler so I figured it was safe.

Most exhaust clamps fitted to British bikes seem to be next to useless.
Try these.
http://www.norbsa02.freeuk.com/goffyclamps.htm

the mufflers are supposed to be made to be a neat fit, not loose. You should have to twist them into place. RTv will work well. most exhaust sealers will work as well.

I had to lengthen the slots in my mufflers to allow the clamping to be successful. Hacksawing an additional 1/2" did it well.

Those are the very clamps that I've invested in!, Concours, I might give your slot lengthening idea a try, it seems pretty logical when you think about it, there's enough header pipe stuck in the silencer to do this easily.

brxpd,

Give this a try I promise you it will work. Slide your muffler on, mark where it stops on the exhaust pipe. Remove the muffler and give the exhaust pipe a couple of wraps of that aluminum tape, until you have a snug fit when you slide your muffler on. If you use those clamps with the sliding piece by the bolt put an small piece of tape over the slice in you muffler. Use a little axle grease to help slide the muffler on as to no tear or bunch the tape. Doing it his way you don't have to over tighten the clamp. Once your muffler is in place you will not see the tape, you won't have a leak, and the muffler won't rock and roll on the exhaust pipe.That tape is used commercially and is nothing more than thin aluminum acting like a shim.

brxpb said:

Those are the very clamps that I've invested in!, Concours, I might give your slot lengthening idea a try, it seems pretty logical when you think about it, there's enough header pipe stuck in the silencer to do this easily.

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Not sure where y'all from but here in the States,,,,,,,,,,http://www.mcmaster.com/#standard-hose-clamps/=swpf3s

Mark F said:

Most exhaust clamps fitted to British bikes seem to be next to useless.
Try these.
http://www.norbsa02.freeuk.com/goffyclamps.htm

Click to expand...

Yes don't they look lovely.
regards, Dereck
ps if the mufflers and pipes are made correctly you wont need those monsters.