Muffler install Question

[jayro88]

So I purchased a muffler form summit to install in my e250. It is this unit:

http://www.summitracing.com/parts/jex-f726-6d/overview/

It is a louvered straight through design I am unclear on which way I should install it. The inside walls of the straight through tube has a bunch of little scoops on it that are all facing the same way. Should I install so the exhaust gas flows with the scoops (over the back side of them for smoother flow) as seen in the pic

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or against the scoops in this pic

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I want to quite down the exhaust without sacrificing performance/efficiency. Thanks

 

[BDCarrillo]

Slip it onto the exhaust both ways and give it a listen.

Exhaust blowing into the scoops oughta be slightly quieter

 

[IDIoit]

which way I should install it.

this is a trick question.

the correct answer is, YOU DONT!

 

[jayro88]

Thanks. I bought some clamps to hold it prior to welding. I may try it both ways to see what I like.

this is a trick question.

the correct answer is, YOU DONT!

Ha ha!! That is where I am currently at. Just a 3" straight pipe. It sounds pretty good cruising at 60-65mph on flat ground but there is a slight drone. Add any more speed, hills or hook up a trailer and it gets really loud really quick. Since I am making it a highway cruiser for family trips (24 hours from here to family in Texas) I need to quiet it down. The drone gets old after a while.

 

[freebird01]

yes it does! had to deal with our 04 Tahoe after the exhaust fell off in Talmadge, OH all the way to Ft. Wayne. that drone will damn near drive you nuts on long trips!

 

[madpogue]

You're going to weld on an aftermarket muffler?

 

[jayro88]

You're going to weld on an aftermarket muffler?

I got clamps to clamp it in for a while to see if it works the way I want. If it does, then I will probably weld it in to make sure it is good and sealed.

 

[Waystro]

Thanks. I bought some clamps to hold it prior to welding. I may try it both ways to see what I like.


Ha ha!! That is where I am currently at. Just a 3" straight pipe. It sounds pretty good cruising at 60-65mph on flat ground but there is a slight drone. Add any more speed, hills or hook up a trailer and it gets really loud really quick. Since I am making it a highway cruiser for family trips (24 hours from here to family in Texas) I need to quiet it down. The drone gets old after a while.

Don't go against the bevels I did that in a set of glass packs they Soot up fast
Where In Texas are y'all planning on going?

 

[opusd2]

I went from a straight pipe which barked a bit, to a tractor muffler for a turbo'd 1066 International tractor which is designed a lot like that muffler with the baffles tabs absorbing noise from the bottom up and it didn't pacify the truck's sound, but rather controlled it so I could run my little boy around and not give his hearing a dent like I have from growing up next to roaring tractors and machinery. But I think it also helps that I bumped the NA exhaust diameter up from stock to 3.5" right after the "Y" pipe and terminating with a 4" tip. It's quiet until you push ******* the go pedal, and then it'll growl to the rear where the exhaust terminates/points out at an angle.

But in the end you have to do what you like and are comfortable with.

 

[jayro88]

Don't go against the bevels I did that in a set of glass packs they Soot up fast
Where In Texas are y'all planning on going?

I ended up clamping it in going with the baffles. I heard that against the baffles did a lot to hurt the flow characteristics of it. I will give it a few weeks before I make it permanent to ensure I like it.

Family is down in San Antonio. It is about 22-23 hours driving, but if we are towing anything I usually add a couple of hours......24-26.

 

[madpogue]

Band clamps should seal it plenty tight. Still your call on the welding, but seems like overkill, esp. if you find you need to do anything with it down the road.

Hey - Auburn. Awesome car museum you have there! Haven't been there in aprx. 20 years, though.

 

[jayro88]

Band clamps should seal it plenty tight. Still your call on the welding, but seems like overkill, esp. if you find you need to do anything with it down the road.

Hey - Auburn. Awesome car museum you have there! Haven't been there in aprx. 20 years, though.

It is pretty cool. They have added a couple more of them around here, along with some WWII stuff. All pretty interesting. I even get into the Cord/Duesenburg museum for free on Tuesdays since I am a Auburn resident.

 

[Waystro]

I ended up clamping it in going with the baffles. I heard that against the baffles did a lot to hurt the flow characteristics of it. I will give it a few weeks before I make it permanent to ensure I like it.

Family is down in San Antonio. It is about 22-23 hours driving, but if we are towing anything I usually add a couple of hours......24-26.

Hey that's where I'm at.
I'll keep a eye out for a IDI Powered Van.

 

[jayro88]

Hey that's where I'm at.
I'll keep a eye out for a IDI Powered Van.

If we head down I will shoot you a message. I went to highschool down there. Madison.