Mustang mufflers

[dirtwarrior]

Has anyone cut apart stock Mustang mufflers? I am wondering what it looks like inside.

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[WD Pro]

Not exactly what you wanted, but it should start you on your way :

Note the spot welds around the box :

They hold an internal baffle plate. splitting the box into two chambers.

I will call the first smaller chamber number 1 and the second larger chamber number 2.

Chamber 1 has a condensation drain.

Here is the non valve outer exhaust pipe internals :

That's the outer box wall you can see (remember our euros have a GPF so the internals are pretty mush as clean as the day they were made).

That pipe is perforated and runs through both chambers, pretty much up to the outer box wall.

Here is the valve inner / central exhaust pipe internals :

Note it was really hard to get a good photo down there as the valve took all the flash and the focus.

By naked eye, you can see straight down it, out of the back of the box and right to the first bend in the exhaust tubing.

Like the outer pipe it's perforated and as best as my eye can make out, I think the pipe has a small gap in it that vents into chamber 1 i.e. rather than one continuous pipe, it looks like two pipes perfectly in line, but slightly separated.

So ...

Valve open = Gas is straight though both chambers with some pipe perforations.

Valve closed = Gas backs up behind the valve. (depending on the box stuffing in chamber 2) a small proportion of the gas will pass through the perforations into chamber 2 and out of the perforations into the other tailpipe. Majority of the gas will pass through the pipe separation into chamber 1, head to the back of the box, to exit the other tailpipe passing some more perforations on the way.

WD

WD

 

[dirtwarrior]

Thanks for the pictures it helps a little. I deleted my stock mufflers and now have a drone. I want to kill the drone but keep a little sound without spending a lot. Any info like that would help.

 

[njweatherman]

If you are just looking for mufflers, try Flowmaster. They have all kinds with different levels of sounds.
https://www.holley.com/products/exhaust/mufflers/

 

[K4fxd]

I deleted my stock mufflers and now have a drone.

I got rid of drone on my car by extending the tips. They stick out about 2 inches from the bumper. Still looks good and no drone.

 

[dirtwarrior]

Great idea do you have a picture?

 

[K4fxd]

Great idea do you have a picture?

I'll snap one next time I go outside.

 

[WD Pro]

I got rid of drone on my car by extending the tips. They stick out about 2 inches from the bumper. Still looks good and no drone.

Interesting, I’ve just shortened mine to help with the active exhaust loom rubbing issue !

WD

 

[ice445]

 

[dirtwarrior]

Thank you for the picture

 

[WD Pro]

That looks quite restrictive compared the the AE muffler ?

From left to right (1 to 3), pipes 1 and 2 are essentially the same pipe and straight through on the AE setup.

WD

 

[ice445]

That looks quite restrictive compared the the AE muffler ?

From left to right (1 to 3), pipes 1 and 2 are essentially the same pipe and straight through on the AE setup.

WD

Yeah, it has to be quiet without using valves, so there's a lot of nonsense in there.

 

[WD Pro]

Yeah, it has to be quiet without using valves, so there's a lot of nonsense in there.

Probably also partially responsible for why a proportion of the non AE uses don’t like the resonator deletes

WD

 

[W.O.T. Stang]

Thank you for the picture! I always wondered what it looked like!
This is without active exhaust, correct?

 

[ice445]

Thank you for the picture! I always wondered what it looked like!
This is without active exhaust, correct?

Correct. Not to take credit though, I obtained this from another member on here a long time ago (unfortunately I can't remember who). I had a rock stuck in mine so I wanted to see how I needed to get it out.

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