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Discussion Starter · #1 ·
Hey everyone!
I've recently installed Cobra Speedster Longs on my '05 1800 C.
I do like the pipes, but has anyone noticed a noticeable amount of
flexing and movement their exhaust mounting bracket allows while
idling and riding? Cobra says no one has ever said anything about it
(until me), and when I went over every inch to double check everything
for correct installation and tightness, I came back again to their mount.
Then they said not to worry, just ride and enjoy. Well, I can do that,
but I fear that someday that movement will continue to create stress up
front on the head mounts and possibly cause a problem. Anyone ever
notice movement in their pipes? Check while your riding and idling.
I know the stock bracket is like a steel girder and doesn't move AT ALL,
plus mounts up to two bolts, not just one and doesn't have a hollow bar
as part of the bracket.
Let me know what thought y'all might have...

- Troy W.
 

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They should flex/move some. The engine is rubber mounted and moves in the frame, if the pipes didn't move some, they would break the welds
 

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Discussion Starter · #3 ·
You know, that thought had occured to me just yesterday. However,
Cobra didn't seem to mention that, and thought the movement was odd.
They said no one has ever said anything. That's the thing I don't like
about Cobra, and hasn't changed, that the folks there I speak are cool
and all...but don't really, REALLY seem to know about the stuff they
make. Kinda like why they set the Fi2000R so rich while their printed
instructions say they dyno tested for best mixtures...

So, yes, you're confirming what I started to think. Makes me wonder still
about how solidly the stock system is mounted. That pipe never moved
a millimeter!











Chicago-Spike said:
They should flex/move some. The engine is rubber mounted and moves in the frame, if the pipes didn't move some, they would break the welds
 

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Discussion Starter · #5 ·
Indeed it is. But I never saw it move, and I can't move the bolts in the
stock bracket holes even a mm. Of course, my grip isn't quite the
pounding torque movement that motor puts out.
But seriously, the Cobra pipe moves...a lot...and everything is tight.
The stock pipe could never actually be seen moving. But, the movement,
like you guys said, is likely a by-product of a weaker Cobra mount and the
motor itself moving. I lugged it just a bit one dau while going up a hill,
then gassed it hard to see it the motor moved. It does...like you said...
just a wee bit in its rubber mounts. Kinda like a car motor.
Thanks guys. Helps me worry about it less!
 

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From what I can see.....there is no way the Cobra Mounting Bar can pivot. Yes....there is only on bolt to the frame......but there is two that bolt to the exhaust making it impossible to pivot unless one of the bolts on the pipes themselves is missing.

My exhaust does appear to move when revving the engine.....but it is actually the rear suspension compressing from the tourque of that big ole 1800.

Just my .02

RRP
 

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Discussion Starter · #7 ·
It's not pivoting. I didn't say that, though that's the first thing I checked.
No, it's flexing. I can see the bar on the bracket physically flexing
when idling and cruising. It's just the nature of the way it's made I guess.
Just a small diameter hollow bar, versus the thick, heavy steel girder of
the stock bracket. I guess it's no big deal. I guess it's just the vibes from
that giant torque mill, which is just fine with me. I just don't want the pipes
pulling them selves apart over time...which probably is unlikely. I hope.
 
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