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Author Topic: Loose exhaust coupling  (Read 1778 times)

Offline jamestnewsonr65

  • Lives in Foothills of Mt. Olympus
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  • Posts: 232
Loose exhaust coupling
« on: August 17, 2014, 01:17:02 PM »
I bought some mufflers from here http://modernmotorcycle.co/collections/exhaust/products/muffler-reverse-cone-megaphone-shorty-black and they came with some reducer collars which I thought, great just put them on, clamp the, up and good to go. Wrong!

Even with the reducers which are supposed to take you down to 35mm they are a little loose and don't sit properly. Does anyone have and ideas on how to make them tighter fitting or indeed where to get a smaller fitting collar?

Thanks in advance.
James.
1983 R65LS completely refurbished to my liking.
1985 R80 nearly stock rebuild (basically new bike).
1981 R65 (box of bits).

Offline Tony Smith

  • Mt. Olympus Resident
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  • Posts: 2331
  • Graduate, Wallace and Gromit School of Engineering
Re: Loose exhaust coupling
« Reply #1 on: August 17, 2014, 06:25:03 PM »
1978 R100RS| 1981 R100RS (JPS) | 1984 R65 | 1992 KLE500 | 2002 R1150GSA |

Offline jamestnewsonr65

  • Lives in Foothills of Mt. Olympus
  • **
  • Posts: 232
Re: Loose exhaust coupling
« Reply #2 on: August 18, 2014, 03:32:21 AM »
It was more the internal reducers.
They just don't seem to squeeze together enough to hold the muffler tight.
« Last Edit: August 18, 2014, 03:34:22 AM by jamestnewsonr65 »
1983 R65LS completely refurbished to my liking.
1985 R80 nearly stock rebuild (basically new bike).
1981 R65 (box of bits).

Offline montmil

  • Mt. Olympus Resident
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  • Posts: 8371
Re: Loose exhaust coupling
« Reply #3 on: August 19, 2014, 03:53:57 PM »
Cut some strips from brass shim stock. Roll 'em up inside those reducers. Should get you snugged up.
Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet

Offline jamestnewsonr65

  • Lives in Foothills of Mt. Olympus
  • **
  • Posts: 232
Re: Loose exhaust coupling
« Reply #4 on: August 19, 2014, 05:06:02 PM »
I thought that might've an option or cutting the reducers a bit so they close up a little tighter.

Shims are probably easier!
1983 R65LS completely refurbished to my liking.
1985 R80 nearly stock rebuild (basically new bike).
1981 R65 (box of bits).

Offline Luca

  • Newbie
  • *
  • Posts: 27
  • Taking my time as quick as I can
Re: Loose exhaust coupling
« Reply #5 on: August 20, 2014, 09:03:03 AM »
Monte, brass shim stock?  This would be a great opportunity to re-use some spent beer cans!  [smiley=beer.gif]
'82 R65LS
'01 K1200RS

youngjohn

  • Guest
Re: Loose exhaust coupling
« Reply #6 on: August 20, 2014, 12:27:53 PM »
Try greasing between the reducing rings so that they slide over each other more easily. I had one of these a few years ago and that did the trick for me.

Offline montmil

  • Mt. Olympus Resident
  • ****
  • Posts: 8371
Re: Loose exhaust coupling
« Reply #7 on: August 20, 2014, 03:15:06 PM »
Quote
Monte, brass shim stock?  This would be a great opportunity to re-use some spent beer cans!  [smiley=beer.gif]

Done that!
Plus, a 12-ouncer makes a great install tool for a final drive oil seal. Beer... It's not just what's for breakfast.


Monte Miller
Denton, TEXAS
1978 BMW R100S
1981 BMW R65
1983 BMW R65
1995 Triumph Trophy
1986 VW Cabriolet