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Car Forum / MINI / March 2006

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Resonance

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GO - 22 Mar 2006 19:35 GMT
I am suffering resonance from the exhaust (2" twin box centre exit) can
anyone suggest a fix?
Barspeed and his magical Mini - 22 Mar 2006 23:01 GMT
Presume you have mounted it using rubber bushes?

>I am suffering resonance from the exhaust (2" twin box centre exit) can
>anyone suggest a fix?
John in Oz - 22 Mar 2006 23:11 GMT
How far back does the tip finish?  If the end of the exhaust isn't past
the rear valance then the noise out the end can make the boot floor
resonate
GO - 23 Mar 2006 18:17 GMT
Exhaust is mounted on the usual bobbin type rubber bushes & the tip extends
to a point level with the bumper.

> How far back does the tip finish?  If the end of the exhaust isn't past
> the rear valance then the noise out the end can make the boot floor
> resonate
Rob - 23 Mar 2006 22:31 GMT
> Exhaust is mounted on the usual bobbin type rubber bushes & the tip extends
> to a point level with the bumper.
>
>>How far back does the tip finish?  If the end of the exhaust isn't past
>>the rear valance then the noise out the end can make the boot floor
>>resonate

I would suggest that you get a longer oval muffler and have it come out
at 45 deg like the original to accommodate the extra length.

I also find that when you do have the exhaust coming straight through
the centre it scrapes.
RS - 23 Mar 2006 18:25 GMT
>I am suffering resonance from the exhaust (2" twin box centre exit) can
>anyone suggest a fix?

~ Drive faster!

does the resonance change with speed? - if it doesnt then it isnt
resonating - its just loud.
GO - 23 Mar 2006 18:57 GMT
Reasonable up to 50mph...resonance between 50mph & 75mph reasonable then up
to 100mph+

> >I am suffering resonance from the exhaust (2" twin box centre exit) can
> >anyone suggest a fix?
[quoted text clipped - 3 lines]
> does the resonance change with speed? - if it doesnt then it isnt
> resonating - its just loud.
jacko - 23 Mar 2006 22:36 GMT
but the speed on a motorway is only 70mph

> Reasonable up to 50mph...resonance between 50mph & 75mph reasonable then
> up to 100mph+
[quoted text clipped - 6 lines]
>> does the resonance change with speed? - if it doesnt then it isnt
>> resonating - its just loud.
Steve68s - 23 Mar 2006 22:54 GMT
what type of syesem is it? its not a mini sport sureflow is is?

Steve.

> but the speed on a motorway is only 70mph
>
[quoted text clipped - 8 lines]
>>> does the resonance change with speed? - if it doesnt then it isnt
>>> resonating - its just loud.
Fitzy - 23 Mar 2006 23:56 GMT
Hi Steve
are you interested in the lakes tour this year,
myself , Ian and Steve are doing it again ,
what about you,
Peter

> what type of syesem is it? its not a mini sport sureflow is is?
>
[quoted text clipped - 12 lines]
>>>> does the resonance change with speed? - if it doesnt then it isnt
>>>> resonating - its just loud.
Steve68s - 24 Mar 2006 00:03 GMT
when is it?

Steve.

> Hi Steve
> are you interested in the lakes tour this year,
[quoted text clipped - 18 lines]
>>>>> does the resonance change with speed? - if it doesnt then it isnt
>>>>> resonating - its just loud.
GO - 24 Mar 2006 17:38 GMT
No idea what manufacturer....may have time to put something different
together at the weekend.....I've got a couple of middle boxes from a Mk2
Golf GTi that look as though they may be useful....

> what type of syesem is it? its not a mini sport sureflow is is?
>
[quoted text clipped - 12 lines]
>>>> does the resonance change with speed? - if it doesnt then it isnt
>>>> resonating - its just loud.
Fitzy - 23 Mar 2006 23:54 GMT
> but the speed on a motorway is only 70mph

since when ;-)
Fitzy

> but the speed on a motorway is only 70mph
>
[quoted text clipped - 8 lines]
>>> does the resonance change with speed? - if it doesnt then it isnt
>>> resonating - its just loud.
GO - 24 Mar 2006 17:40 GMT
I though there was a tolerance of 10% +2?  No motorways around here anyway!
:-)

>> but the speed on a motorway is only 70mph
>>
[quoted text clipped - 13 lines]
>>>> does the resonance change with speed? - if it doesnt then it isnt
>>>> resonating - its just loud.

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