nick9one1
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| posted on 2/8/18 at 12:00 AM |
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Bike exhaust spring connections
I have a zzr1100 exhaust which seems to use sleeved connections and a spring to pull it closed.
These seem quite common on bikes?
Do I need anything else to make them seal - some kind of gasket or o ring?
The sleeve is fairly tight but I'm sure they will leak?
[Edited on 2/8/18 by nick9one1]
[Edited on 2/8/18 by nick9one1]
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40inches
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| posted on 2/8/18 at 07:45 AM |
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This was normal procedure at one time, also used on race car engines, they surprisingly don't leak that much but cause the exhaust to pop on the
overrun  Teflon paste may stop it popping?
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nick205
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| posted on 2/8/18 at 08:00 AM |
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Not familiar with bike exhausts so don't know. I'd have the same concern about the connection leaking though! Even if the sleave joint
was a conical arrangement I'd still have thought it needed some form of compression to prevent it leaking.
Can't see in the photo, but is the a matching spring arrangement the othe side of the joint?
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40inches
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| posted on 2/8/18 at 08:37 AM |
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Caterham R500 held on with one spring. No way clamps would fit.
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907
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| posted on 2/8/18 at 04:54 PM |
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quote:
Originally posted by nick9one1
I have a zzr1100 exhaust which seems to use sleeved connections and a spring to pull it closed.
These seem quite common on bikes?
Do I need anything else to make them seal - some kind of gasket or o ring?
The sleeve is fairly tight but I'm sure they will leak?
[Edited on 2/8/18 by nick9one1]
[Edited on 2/8/18 by nick9one1]
The joint in your photo hasn't stretched the spring. You need a shorter spring for that to work I would think.
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40inches
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| posted on 2/8/18 at 07:04 PM |
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quote:
Originally posted by 907
quote:
Originally posted by nick9one1
I have a zzr1100 exhaust which seems to use sleeved connections and a spring to pull it closed.
These seem quite common on bikes?
Do I need anything else to make them seal - some kind of gasket or o ring?
The sleeve is fairly tight but I'm sure they will leak?
[Edited on 2/8/18 by nick9one1]
[Edited on 2/8/18 by nick9one1]
The joint in your photo hasn't stretched the spring. You need a shorter spring for that to work I would think.
Think you are right, I remember them being a right barsteward to remove, had to use a 'T' bar with a hook on the end.
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40inches
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| posted on 2/8/18 at 07:12 PM |
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There is a video at the end of this thread https://www.locostbuilders.co.uk/viewthread.php?tid=213061
Check out the exhaust joints
Ooooops! Just noticed that it's the same OP
[Edited on 2-8-18 by 40inches]
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nick9one1
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| posted on 2/8/18 at 07:58 PM |
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Thanks, good to know thats how they are designed to work.
It doesn't look the like the spring is stretched in the picture, but actually it is. Probably 2cm shorter before I put it on. Which wasn't
easy!
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Andy B
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| posted on 2/8/18 at 09:11 PM |
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All our systems use this arrangement - here’s and industry secret 😀
The best sealing medium is quite simply the cheapest clear bathroom silicon sealant that you can buy
Has to be clear - has to be cheap one with no added extras
It will take massive temps, remains flexible and the joint will slide apart easily when you need to strip it
We use it on all ours and it’s giaranyeed gas tight
Regards to all
Andy
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nick9one1
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| posted on 2/8/18 at 09:35 PM |
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quote:
Originally posted by Andy B
All our systems use this arrangement - here’s and industry secret 😀
The best sealing medium is quite simply the cheapest clear bathroom silicon sealant that you can buy
Has to be clear - has to be cheap one with no added extras
It will take massive temps, remains flexible and the joint will slide apart easily when you need to strip it
We use it on all ours and it’s giaranyeed gas tight
Regards to all
Andy
That is definitely an industry secret, Thanks, will try !!
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MikeRJ
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| posted on 3/8/18 at 03:02 PM |
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quote:
Originally posted by nick9one1
quote:
Originally posted by Andy B
All our systems use this arrangement - here’s and industry secret 😀
The best sealing medium is quite simply the cheapest clear bathroom silicon sealant that you can buy
Has to be clear - has to be cheap one with no added extras
It will take massive temps, remains flexible and the joint will slide apart easily when you need to strip it
We use it on all ours and it’s giaranyeed gas tight
Regards to all
Andy
That is definitely an industry secret, Thanks, will try !!
Unless you have an oxygen sensor in your exhaust. Standard silicone sealer will kill them in short order.
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