2 into 1 muffler pics and suggestions

[fordguy]

I will most likely run 2 in 2 out, but would like to see exhaust tubing routing, especially the crossover pipe . It was also mentioned in another thread that I would not need crossover pipe with 2 out? I am running a 4r70 with an explorer engine with explorer manifolds. I looked at BC kits to try and get an idea.

 

[hankjr]

i went with two in two out for my build. a local shop custom bent everything in stainless. we used v band clamps ahead of and after muffler in case anything needed to come out. flowmaster 50 HD muffler i think. its on passenger side and exhaust exits behind the tires to the sides. no crossover or h pipe. the 2 in 2 out sort of accomplishes that (my words).

if you have a local shop talk to them. my guy got very invested in the job and really did a great job. i can post pics later

Hank

 

[JohnJohn]

I bought some pipes and made my own 2 into 1 with long tube headers. 2.5" from the headers and 3" out.
I didn't like the Flowmaster so I replaced it with a Magnaflow and am much happier.

 

[fordguy]

Thanks JJ. How loud is the manga flow? I am looking for a turbo muffler sound level. I wanted some ideas before I go talk to the local muffler shop.

 

[JohnJohn]

https://youtu.be/bUXnN0X8aPM
Here is a video from a friend who made the exact system with the Magnaflow.
It's relatively quiet until you floor it.

 

[fordguy]

Thanks, much quieter than a flowmaster

 

[bigmuddy]

https://youtu.be/bUXnN0X8aPM
Here is a video from a friend who made the exact system with the Magnaflow.
It's relatively quiet until you floor it.

Mine sounded much the same, pretty mellow until getting on it.

Mine ran all the way out the back though which may have made it a bit quieter?

On my 5.8 install I am going to run the same setup.

 

[madcrzydrmr]

The local shop came up with this solution after I cut my original Y when I swapped the NV3550 in.

 

[fordguy]

https://youtu.be/bUXnN0X8aPM
Here is a video from a friend who made the exact system with the Magnaflow.
It's relatively quiet until you floor it.

Do you know which magnaflow it is or what series?

 

[AZ73]

I run a walker quietflow 21400. 2 pipes into the front of the muffler, one out the back.

https://www.summitracing.com/parts/WLK-21400

This was with the BC Bronco temp exhaust system. When I get it to a muffler show it won't hang down so much on the cross over

https://classicbroncos.com/forums/showthread.php?t=231276

 

[DirtDonk]

It was also mentioned in another thread that I would not need crossover pipe with 2 out?

It's probably true that you don't "need" one, but I think it might still depend on the muffler used.
If a chambered muffler where the gasses are all blended inside, then there is probably little benefit to the crossover. But if a straight-through type with only some cross-flow between them within the dense packing, I would think there could still be some benefit to the tuning aspect of running a crossover pipe further upstream.
Are you going to feel a difference in most engines on the street? Likely not.
Are you going to hear a difference though? Probably slightly.
Is there a tuning benefit really? Probably hard to say, but I believe it's still there to be had. Again, might depend on the muffler used.

If quiet is more important than "sound" to you, a recent episode of Engine Masters just did multiple dyno runs comparing exhaust between a straight through muffler (similar to a Magnaflow, but I don't think they mentioned the brand) to a chambered muffler. Specifically the Dynomax Super Turbo.
The Super Turbo won!

It had virtually the same horsepower throughout the range, with a think a little advantage at the bottom end, with a much quieter run.
Same exhaust setup other than the muffler.

I'm still going to try a Dynomax Ultraflow (stainless canister type, rather than a solid welded one) because I'm still a fan of straight through. But I'm tempted to try the Super Turbo on my '68 because without any carpet or insulation, my Magnaflow is actually fairly loud inside. It's not bad outside, and has a really nice tone to it, but inside it's quite the echo chamber.
My old generic turbo duals were super quiet, and had reasonable performance but I'm sure I left a lot on the table at higher rpms and throttle settings. But I liked it.
Quieter would be better in my case.

Sorry no pictures to compare, but it's dismantled partially at the moment. It's not the same type you are planning (mine's duals all the way, but both on the passenger side) but it would be just another reference point.

Good luck.

Paul

 

[ngsd]

I did the Duff's 2 into 1 kit. It worked well.

 

[fordguy]

Actually Paul mine will be duals, I titled the thread that way because I was concerned about the crossover. 2 in 2 out muffler choices are not as many for 2 in 1 out. I figured if I get the duals to the muffler, 2 out is easy. Way more real estate in the rear lol.

 

[JohnJohn]

Do you know which magnaflow it is or what series?

Magnaflow 12198 is what I have and it's the same as the one in the video.

 

[sprdv1]

Actually Paul mine will be duals, I titled the thread that way because I was concerned about the crossover. 2 in 2 out muffler choices are not as many for 2 in 1 out. I figured if I get the duals to the muffler, 2 out is easy. Way more real estate in the rear lol.

I can understand that brother...

 

[rguest3]

Dual 2 1/2" Inlets, Flowmaster Super 50 Muffler, Single 3'' Outlet at stock location. Pretty darn quiet and more flow than most will need.

Gibson Round Superflow mufflers are also recommended and fit best.

 

[fordguy]

Dual 2 1/2" Inlets, Flowmaster Super 50 Muffler, Single 3'' Outlet at stock location. Pretty darn quiet and more flow than most will need.

Gibson Round Superflow mufflers are also recommended and fit best.

Do you have pics of routing to the muffler, after the muffler is easy. Looking to avoid my transmission pan.

 

[bronkenn]

I did mine with 2.25 in and 3 out using the Delta 50 series Flowmaster. It has a nice idle sound and isn't very loud when you get in it.

 

[fordguy]

Thanks ken