Aspencade 4 in to 2 exhaust joints


Information and questions on GL1100 Goldwings (1980-1983)
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bobbybiscuit
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Aspencade 4 in to 2 exhaust joints

Postby bobbybiscuit » Mon Feb 01, 2016 7:07 am



I inherited on purchase of my bike a stainless steel exhaust system. The exhaust system is great except on the joints of the two in to one where it slides in to the end exhaust (baffle), in that it blows slightly. What is the best clamp to use for this awkward design of pipes to secure the joint and prevent it blowing?

Thanks



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Big Blue UK
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Re: Aspencade 4 in to 2 exhaust joints

Postby Big Blue UK » Mon Feb 08, 2016 1:06 am

It is not the clamps, I use the stainless type in the pics below, you need to fit carbon fibre collars between the pipes and silencers. They are slid onto the pipes, the silencer is then slid over the collar. Wire or carbon type are used. If you have over tightened clamps you may have crimped the silencers internal diameter, and you may have trouble sliding the silencer over the collar however. Thoroughly clean the mating faces with wire wool, and clean off any greasy marks.




Is it the Motad system, the only one I know that has slip on silencers
If at first you don't succeed, hide the evidence.

bobbybiscuit
Posts: 127
Joined: Fri Feb 28, 2014 3:27 pm
Location: Plymouth, England, United Kingdom
Motorcycle: 1982 GL1100A Aspencade
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Re: Aspencade 4 in to 2 exhaust joints

Postby bobbybiscuit » Mon Feb 08, 2016 2:34 pm

No not a MOTAD but unsure what it is to be honest.

There is no room between the end of the exhaust manifold and the exhaust itself to slide in a mesh collar.

I will probably be able to clamp one on over the joint I would imagine.

Interestingly the two downpipes merge in to one before the exhaust not as shown in the photo you provided (MoTAD exhaust has the two pipes not the downpipes)

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Big Blue UK
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Re: Aspencade 4 in to 2 exhaust joints

Postby Big Blue UK » Mon Feb 08, 2016 11:41 pm

What type of clamps are you using?
Have you fitted stainless downpipes also, or are you fitting stainless silencers onto existing downpipes?
Is the system new or used?
Using U type clamps even 1mm oversize can deform and oval the silencer.
I imagine there must be slap in the joint

Not knowing what clamp pressure has been applied I would do this.
Cut a thin single slot in the silencer the width of a Mikalor W2 stainless clamp. Slide a Mikalor clamp on the silencer before fitting. Fit a U clamp, and with the engine running, tighten the U clamp until there is no blowing. Stop the engine, remove the U clamp and slide the Mikalor in place and tighten. you can lay a bit of thin solder in the cut slot if you wish.

Is it the same 1100 you had that you were working on when I briefly met you at a pub somewhere in Cornwall with Kerno a few years ago.
If at first you don't succeed, hide the evidence.

bobbybiscuit
Posts: 127
Joined: Fri Feb 28, 2014 3:27 pm
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Re: Aspencade 4 in to 2 exhaust joints

Postby bobbybiscuit » Wed Feb 10, 2016 3:50 pm

Oh yes I remember now. Glad you jogged my memory and yes its the same bike - still having problems . Lost interest for a while in the bike after the brakes seized at the bike. Brakes now in pieces and have to replace the carbs. Still having problems with them. So I was going to jack it in with the bike, but now going to give it one more try.

Anyway back to the exhaust, there is no split in the pipes to allow for expansion at the joints. Not a MOTAD exhaust but it is stainless steel. So I need something to wrap around exhaust joint and clamp it in position.

bobbybiscuit
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Re: Aspencade 4 in to 2 exhaust joints

Postby bobbybiscuit » Wed Feb 10, 2016 3:51 pm

I would add I am not using any clamps and there were not any on the exhaust when I bought the bike.

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Big Blue UK
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Re: Aspencade 4 in to 2 exhaust joints

Postby Big Blue UK » Thu Feb 11, 2016 3:18 am

If you have not clamped the silencers yet You can use a U clamp or a Mikalor, either will do. no need to wrap anything around if they have not been clamped yet. I prefer to tighten with the engine running until there is no blowing, rather than needless over tightening. All I ever did to my 1100 was change the oil and filter, and polish it with Mr Sheen LOL.
If at first you don't succeed, hide the evidence.

bobbybiscuit
Posts: 127
Joined: Fri Feb 28, 2014 3:27 pm
Location: Plymouth, England, United Kingdom
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Re: Aspencade 4 in to 2 exhaust joints

Postby bobbybiscuit » Fri Feb 12, 2016 5:10 am

Thanks for the replies on this subject.

Can i ask the best size Mikalor W2 stainless clamp to purchase please?

Thanks

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Big Blue UK
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Re: Aspencade 4 in to 2 exhaust joints

Postby Big Blue UK » Fri Feb 12, 2016 5:43 am

If at first you don't succeed, hide the evidence.

bobbybiscuit
Posts: 127
Joined: Fri Feb 28, 2014 3:27 pm
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Re: Aspencade 4 in to 2 exhaust joints

Postby bobbybiscuit » Fri Feb 12, 2016 6:52 am

Thanks - great help. I have bought 2 from another seller for £5.60 including p and p instead of £4.99 for one . Another problem solved.

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Big Blue UK
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Location: Staffordshire UK
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Re: Aspencade 4 in to 2 exhaust joints

Postby Big Blue UK » Fri Feb 12, 2016 7:34 am

bobbybiscuit wrote:Thanks - great help. I have bought 2 from another seller for £5.60 including p and p instead of £4.99 for one . Another problem solved.


I guessed you would not pay a fiver for one. I sold my 1100 in 1988.
Last edited by Big Blue UK on Fri Feb 12, 2016 7:55 am, edited 1 time in total.
If at first you don't succeed, hide the evidence.

bobbybiscuit
Posts: 127
Joined: Fri Feb 28, 2014 3:27 pm
Location: Plymouth, England, United Kingdom
Motorcycle: 1982 GL1100A Aspencade
Contact:

Re: Aspencade 4 in to 2 exhaust joints

Postby bobbybiscuit » Fri Feb 12, 2016 7:39 am

Well money is tight being a carer for my wife so always look to save money - deep pockets!!! They need to be with the bike costing me a fortune to get back on the road! :o




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