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Muffler fits loose over pipe #692501
04/20/17 2:38 pm
04/20/17 2:38 pm
Joined: Aug 2010
Posts: 590
Toronto, Canada
B
Bola Offline OP
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Bola  Offline OP
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Joined: Aug 2010
Posts: 590
Toronto, Canada
I'm on the final stages of a rebuild. 69 TR6R. When installing the mufflers to the pipes on both sides there is sufficient play to cause an air leak; even when the clamps are nipped down tightly. Both pipes and mufflers are stock, original components. Any suggestions how to enlarge the pipe area to fit snugly into the muffler/s? One millimetre should do it.

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Re: Muffler fits loose over pipe [Re: Bola] #692505
04/20/17 3:19 pm
04/20/17 3:19 pm
Joined: May 2013
Posts: 5,125
Rotherham - S. Yorkshire
Allan Gill Offline

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Allan Gill  Offline

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Joined: May 2013
Posts: 5,125
Rotherham - S. Yorkshire
You can buy pipe expanders, I have a set and very handy, much easier to do if you haven't had the pipes chromed as the chromed pipe is a harder than the steel alone. But slide it in, and big spanner to spread the jaws. When I used to make pipes as part of my job I had a pneumatic version. So much easier and quicker.


beerchug
Re: Muffler fits loose over pipe [Re: Bola] #692509
04/20/17 3:36 pm
04/20/17 3:36 pm
Joined: Feb 2008
Posts: 4,615
New Jersey USA
Tridentman Offline

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Tridentman  Offline

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Joined: Feb 2008
Posts: 4,615
New Jersey USA
Pipe expanders are used a lot in the car exhaust world.
You can buy cheap expanders at Harbor Freight or their Canadian equivalents.
HTH

Re: Muffler fits loose over pipe [Re: Tridentman] #692512
04/20/17 4:29 pm
04/20/17 4:29 pm
Joined: Feb 2006
Posts: 712
Qld, Aust and Otago,NZ
G
Ginge Offline
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Ginge  Offline
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Joined: Feb 2006
Posts: 712
Qld, Aust and Otago,NZ
...or you could sleeve it with a strip of alloy cut from the side of a beer can.


Ginge
Re: Muffler fits loose over pipe [Re: Bola] #692527
04/20/17 7:01 pm
04/20/17 7:01 pm
Joined: Jul 2011
Posts: 134
TN/VA/FL USA
F
fried okra Offline
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fried okra  Offline
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F

Joined: Jul 2011
Posts: 134
TN/VA/FL USA
The alloy strip from a beer can came to my mind too......but I hated to be the first to mention it smile

fried okra

Re: Muffler fits loose over pipe [Re: Bola] #692533
04/20/17 7:23 pm
04/20/17 7:23 pm
Joined: Nov 2008
Posts: 2,866
Bishop, Calif.
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desco Offline
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desco  Offline
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Joined: Nov 2008
Posts: 2,866
Bishop, Calif.
Pabst Blue Ribbon makes the best shims.


1968 T120R
1972 T120RV
Any advice given is without a warranty expressed or implied.
Re: Muffler fits loose over pipe [Re: desco] #692541
04/20/17 7:50 pm
04/20/17 7:50 pm
Joined: Oct 2006
Posts: 2,960
Elburn, Ill. USA
I
Irish Swede Offline
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Irish Swede  Offline
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Joined: Oct 2006
Posts: 2,960
Elburn, Ill. USA
...but the worst beer.

Re: Muffler fits loose over pipe [Re: Irish Swede] #692542
04/20/17 8:04 pm
04/20/17 8:04 pm
Joined: Mar 2006
Posts: 3,769
gastonia nc
R
raf940 Offline
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raf940  Offline
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R

Joined: Mar 2006
Posts: 3,769
gastonia nc
I have rediscovered PBR a 12 pack longnecks is just $8 at local grocer ice cold they take me back to the teeny bopper daze late 60s when it was 50 cents a quart


1972 Triumph T120
1968 BSA A65
1968 MGB Roadster
1979 Chevrolet Camaro Berlinetta
1969 Honda Mini Trail
1939 farmall f30 tractor
2004 Honda Shadow Aero
1972 BSA Thunderbolt
1975 yamaha xs650b
1972 Norton commando
Re: Muffler fits loose over pipe [Re: raf940] #692564
04/20/17 11:15 pm
04/20/17 11:15 pm
Joined: Oct 2006
Posts: 2,960
Elburn, Ill. USA
I
Irish Swede Offline
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Irish Swede  Offline
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I

Joined: Oct 2006
Posts: 2,960
Elburn, Ill. USA
The good days....when you could still buy beer in quart bottles, drink the beer, and get money refunded for the bottle!

Re: Muffler fits loose over pipe [Re: Irish Swede] #692574
04/21/17 1:19 am
04/21/17 1:19 am
Joined: Feb 2006
Posts: 712
Qld, Aust and Otago,NZ
G
Ginge Offline
BritBike Forum member
Ginge  Offline
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G

Joined: Feb 2006
Posts: 712
Qld, Aust and Otago,NZ
Glass bottles don't shim as well as cans. Also the labels tend to cook and smoke once the exhaust gets some heat into it.

Seriously though, I've used the beer can method, it works and can be made to look tidy. I also found there was quite a difference between equivalent sized modern chrome metric clamps and the imperial sized clamps the suppliers here sell. The metric equivalents should fit in theory but the imperial clamps are a better bet. It seems a lot rides on that smidgen of an inch lost or gained in the metric/imperial crossover.



Ginge
Re: Muffler fits loose over pipe [Re: Bola] #692591
04/21/17 7:33 am
04/21/17 7:33 am
Joined: Sep 2001
Posts: 666
Great Southern Land
tridentt150v Offline
BritBike Forum member
tridentt150v  Offline
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Joined: Sep 2001
Posts: 666
Great Southern Land
There is also a product called shim brass that you can buy in sheets [about the same size a sheet of sandpaper]. Comes in several thicknesses. Cut to size and fit.

Re: Muffler fits loose over pipe [Re: Bola] #692607
04/21/17 11:50 am
04/21/17 11:50 am
Joined: Feb 2008
Posts: 4,615
New Jersey USA
Tridentman Offline

BritBike Forum member
Tridentman  Offline

BritBike Forum member

Joined: Feb 2008
Posts: 4,615
New Jersey USA
Shim stock from McMaster Carr.
HTH

Re: Muffler fits loose over pipe [Re: Tridentman] #693226
04/27/17 5:39 pm
04/27/17 5:39 pm
Joined: Aug 2010
Posts: 590
Toronto, Canada
B
Bola Offline OP
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Bola  Offline OP
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Joined: Aug 2010
Posts: 590
Toronto, Canada
Got it sorted with a bit of soda can, thanks.


Moderated by  John Healy 


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