Honda-SOHC
SOHC.co.uk Forums => CB500/550 => Topic started by: paulbaker1954 on April 18, 2018, 06:57:03 PM
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Hi
My number 1 exhaust is making not the usual sound after the winter lay up
It sounds a bit like a boom boom noise and if you hold your hand over the end of the pipe it feels as if the pressure is higher than the othe 3 cylinders
Not sure if I need to worry as the bike runs fine other than that and pulls well through rev range just this odd noise at tick over
Any ideas ?
I guess I could post a vid on you tube if needed but not at home at the mo
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is the rubber tube link OK?
not leaking
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Internal baffling breaking up or rusted loose? Less baffling equals less restrictive path for exhaust gases, therefore would have more pressure at tail end.
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Had a rattle from the inner down pipe that rusted at the top once. Took yonks to find that problem ;)
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Internal baffling breaking up or rusted loose? Less baffling equals less restrictive path for exhaust gases, therefore would have more pressure at tail end.
Interesting but these are only 2 year old CMSNL pipes
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The original Honda made ones they came with new, some were having to be replaced under warranty in less than 6 months as they rotted so quickly, so don't ever assume that a fairly new or even brand new part cannot be at fault!
Sent from my X6pro using Tapatalk
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The original Honda made ones they came with new, some were having to be replaced under warranty in less than 6 months as they rotted so quickly, so don't ever assume that a fairly new or even brand new part cannot be at fault!
Sent from my X6pro using Tapatalk
Dumb ? but is there a way to check/test these DS/CMS Pipes as I don’t think the baffles are removable
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Tap gentlyish with soft objet to see if it rattles