[Diy_efi] Can constant WOT operation destroy a muffler?

[Lee M. Lemoine]

if you've got access to one, a K-type thermocouple pyrometer will give you
an indication of how hot the mufflers actually getting.  My thoughts on this
include that of some sort of exhaust shield.  My bronco 2 had a resonator
that would split as you mentioned, and it would do that simply until the
sheild was put back on.   Apparantly the temperature differentials of the
heat of the exhaust and getting it wet (or driving it in snow) was enough to
fatigue it pretty quickly.

Best regards

-- Lee

On 6/15/06, Jim Bannister <jimster1 at earthlink.net> wrote:
>
> Have you checked your motor mounts?  At WOT your engine might be moving
> enough in the mounts to physically mangle your muffler.  I've experienced
> situations where engine movement has damaged the exhaust system.  The
> latest
> case was in my FWD Ford van.  I came off a snowy patch with all four tires
> spinning pretty good.  When the tires hit dry pavement the sudden jolt to
> the power train twisted off the weld between the cat and muffler.
> Jim B.
>
> For rubber mounts, you can use a slice of tyre, seen this very often for
> aftermarket mods to exhaust systems, had something similar when I had
> a 3" exhaust put through...
>
>
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-- 
Sincerely,
Lee M. Lemoine
KB1NQI  - Amateur Radio
http://www.turbochargedsoul.com/
'06 Subaru Legacy GT Limited - 250/250 AWD 5EAT
'93 Chevy Cavalier Z24 Convertible - 300/330 FWD 5MT (Mclaren Turbo!)