Muffler patch to withstand backfiring? Or pressure relief valve?

Oh, also, firing out the back of the valve has always been my
understanding of
it. Don't much matter if it is an intake valve causing a back fire pop
out the carb or TB or the exhaust valve causing a back fire pop out the
exhaust pipe.....

This is opposed to firing on the face of the valve like it should in a
cylinder.

Mike
86/00 CJ7 Laredo, 33x9.5 BFG Muds, 'glass nose to tail in '00
88 Cherokee 235 BFG AT's

"Daniel J. Stern" wrote:
>
> On Mon, 28 Feb 2005, Mike Romain wrote:
>
> > Last time I looked 'backfiring out the exhaust' was a real term
>
> No such thing as "backfiring out the exhaust". But don't feel bad, people
> say and write stupid **** all the time, including wherever it was you
> looked.
>
> > I have never heard anyone ever refer to it as a 'muffler explosion'.
>
> Guess you're looking in the wrong places.

Or should I say "muffler explosion"? We've been informed that is the
politically correct term.
"Al" > wrote in message
ink.net...
> It would probably be best to fix the backfire problem rather than put a
> band-aid on it. A backfire is not normal...........
> "Henry" > wrote in message
> ink.net...
>> My oval muffler has a 1 inch crack on outside probably due to occasional
>> backfiring on deceleration. I would like to patch it but I am guessing
>> that the very best patch I can make will not long withstand the
>> backfiring. So I was thinking to maybe put something on there that would
>> block the crack except when pressure is real high (during a backfire).
>> Like a pressure relief valve. Any ideas?
>>
>> Henry
>
>

On Sun, 27 Feb 2005 18:08:30 GMT, Henry > wrote:
>My oval muffler has a 1 inch crack on outside probably due to occasional
>backfiring on deceleration. I would like to patch it but I am guessing
>that the very best patch I can make will not long withstand the
>backfiring. So I was thinking to maybe put something on there that
>would block the crack except when pressure is real high (during a
>backfire). Like a pressure relief valve. Any ideas?

>Henry

I've never seen any muffler patch kit that could withstand even a
normally operating engine. A roll of duct tape would be just as
effective for all the good it would do.

If it were my car, I would fix the backfiring problem, then replace the
exhaust system..

TCS > wrote in message >...
> On Sun, 27 Feb 2005 18:08:30 GMT, Henry > wrote:
> >My oval muffler has a 1 inch crack on outside probably due to occasional
> >backfiring on deceleration. I would like to patch it but I am guessing
> >that the very best patch I can make will not long withstand the
> >backfiring. So I was thinking to maybe put something on there that
> >would block the crack except when pressure is real high (during a
> >backfire). Like a pressure relief valve. Any ideas?
>
> >Henry
>
> I've never seen any muffler patch kit that could withstand even a
> normally operating engine. A roll of duct tape would be just as
> effective for all the good it would do.

This what I have done with mufflers that have not thinned out too much
from rust. Buy some toggle nut/bolts, large 2" "fender washers" or
drilled thin metal sheet, and high temperature silicone. Punch or
drill holes in areas you feel have enough strength (i.e. close to the
weakened or broken area). Apply silicone liberally around the area to
be sealed by the washers or metal sheet. Push the toggle nut though
and tighten the washer or sheet. Allow the silicone enough time to
fully cure.

I've done this with a couple of my older cars when I was sure there
was only a few holes. The areas covered were about 4" wide. The
emissions testing people looked at it and laughed but it passed. They
have held up for 3 years.