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Exhaust Downpipes

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Fair Weather Rider
Barry Sheene
Barry Sheene

Posts : 96
Location : Tenbury Wells

Exhaust Downpipes

Post by Fair Weather Rider on Thu 09 Mar 2017, 3:32 pm

My collars on down pipes from cylinder head have rotted away.
unlike single down pipes you can't slide a new collar over the end.
Just to be clear it's the collar that bolt the pipes to cylinder head.
Is there a fix for this?


Cheers.

PS been out for a nice ride today.
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Beresford
the 900
the 900

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Location : not that far from Kirkistown

Re: Exhaust Downpipes

Post by Beresford on Thu 09 Mar 2017, 4:32 pm

@Fair Weather Rider wrote:Is there a fix for this?

Yes indeed. Just buy a new exhaust system and that solves the problem.
Smile
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Fair Weather Rider
Barry Sheene
Barry Sheene

Posts : 96
Location : Tenbury Wells

Re: Exhaust Downpipes

Post by Fair Weather Rider on Thu 09 Mar 2017, 6:48 pm

@Beresford wrote:

@Fair Weather Rider wrote:Is there a fix for this?



Yes indeed. Just buy a new exhaust system and that solves the problem.
Smile

That's too easy. Very Happy
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Jameshambleton
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Location : Bedale, North Yorkshire

Re: Exhaust Downpipes

Post by Jameshambleton on Thu 09 Mar 2017, 6:56 pm

If you want a harder method, cut your down pipes off remove the collars, then put new collars on them and reweld it all back together
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Fair Weather Rider
Barry Sheene
Barry Sheene

Posts : 96
Location : Tenbury Wells

Re: Exhaust Downpipes

Post by Fair Weather Rider on Thu 09 Mar 2017, 7:07 pm

Sounds like a plan.
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Beresford
the 900
the 900

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Location : not that far from Kirkistown

Re: Exhaust Downpipes

Post by Beresford on Thu 09 Mar 2017, 8:36 pm

I'm sure that is doable, but where to get / or how to make the collars ?
If you succeed, post something here, as we all love to save money.
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ANDYC
the 900
the 900

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Posts : 699
Location : Windsor

Re: Exhaust Downpipes

Post by ANDYC on Fri 10 Mar 2017, 8:05 am

I'm looking into a solution for this dilemma as I have fallen for this a few times over the years. 
I'm thinking about making split collars if I can't find some suitable ones readily available from another model.
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Fair Weather Rider
Barry Sheene
Barry Sheene

Posts : 96
Location : Tenbury Wells

Re: Exhaust Downpipes

Post by Fair Weather Rider on Fri 10 Mar 2017, 8:38 am

Yes, it seems a shame to buy new down pipes, when it's just the collars that are "Naff" and the pipes are perfectly good.
I will keep trying to find a solution.

Happy days.
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eternally_troubled
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Location : 'ere be fens. (near Cambridge)

Re: Exhaust Downpipes

Post by eternally_troubled on Sun 19 Mar 2017, 7:57 pm

Split collars could be complicated, but if you made one thick enough you could just have it in two halves and bolt it together, like this:



Sorry about the bad drawing. You could even make it square which would be less hassle.
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ANDYC
the 900
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Re: Exhaust Downpipes

Post by ANDYC on Sun 19 Mar 2017, 8:18 pm

The ones that I'm going to be trying are like the Kawasaki ones used on the GPX750. They're interlocking but cast aluminium and crack at much more than finger tight in my experience. However mine will be made from 8mm stainless steel so a lot more robust.
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eternally_troubled
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Re: Exhaust Downpipes

Post by eternally_troubled on Sun 19 Mar 2017, 8:27 pm

@ANDYC wrote:The ones that I'm going to be trying are like the Kawasaki ones used on the GPX750. They're interlocking but cast aluminium and crack at much more than finger tight in my experience. However mine will be made from 8mm stainless steel so a lot more robust.

I know roughly what you mean - I thought a bit about how to make them when my ones gave up the ghost, however the rest of my downpipes were also knackered so I didn't think for long! (plus stainless pipes seem like such a much better idea)

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ANDYC
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Re: Exhaust Downpipes

Post by ANDYC on Sun 19 Mar 2017, 8:36 pm

Of course it's a better idea but much more expensive.

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