Nathaniel,
A well made and properly mounted exhaust should rarely bang against
the chassis.
As well as exhaust mounts, you probably also need to change the
engine and gearbox mounts so there is less movement to start with.
Have they ever been changed on your car or are they still the 40 year
old originals?
A short stainless steel flexi section should also be fitted at the
end of the extractors to isolate most of the remaining drivetrain
movement from the main exhaust pipe. You can also slightly flatten
(or oval) the section of exhaust pipe that passes through the chassis
for extra clearance.
Hope that helps.
Phill B
On 26/11/2008, at 12:09 PM, Nathaniel Leeds wrote:
> the leak was where the
> exhaust pipe passed through he X support in the frame. Apparently
> the pipe
> bangs against that x, and cuts itself; replacing the pipe will set
> me up for
> the same problem in two months.
>
> Before I go and replace that section of pipe and wait for it to
> leak again
> in 2 months, I though I'd ask if anyone else has had this problem,
> and found
> a solution?
>
> Nathaniel Leeds
> '69 2000
> (a.k.a. wheezy)
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