[P0larity0]

For those who built their own systems and or adding j-pipes to an existing system where did you get the pipes from?

 

[Silver Bullet]

Jegs or summit should have them.

 

[P0larity0]

Any specific ones on there? Saw a bunch on summit from $10 to almost $100.

 

[todds87ss]

I believe mine are from Summit, dynomax part no. 42310 j bends. Also, the easiest way to plug the end is to use a steel freeze plug that fits tightly into the end. Part no. dorman 555-038. tap them in, and just tack weld The system will look better, and your welder will thank you.

 

[P0larity0]

cool thanks

 

[P0larity0]

Will those Dynomax 42310s work on Loudmouths if i go that route?

 

[Byoficr]

Seen others use
42426 dyno max.

 

[farsighted770]

build a sleave with band clamps over the end and lengthen or shorten based on the desired tone, it basically cancels the resonant frequency of the exhaust pulses and it passes that chamber, they call that a helmholtz chamber, and thats what makes the SOLO's sooo cool.

EDIT... simplified, heres the helmholtz equation (i'm a nerd)

PS diff eq sucks!

 

[SmokeyBear911]

Or just buy a set of Corsas and have zero drone...

 

[P0larity0]

Yeah Corsa is nice, but not $1300 nice.

 

[SmokeyBear911]

Yeah Corsa is nice, but not $1300 nice.

I disagree 1000%
Buddy just put a Corsa on this GMC truck, and it sounds amazing, and no drone...

You get what you pay for...

 

[P0larity0]

I disagree 1000%
Buddy just put a Corsa on this GMC truck, and it sounds amazing, and no drone...

You get what you pay for...

I'm sure they are very high quality and they do sound great in sound clips, but I still can't justify that cost. If I wanted a full cat-back it'd be one of the four Solo systems. I'm going Solo AB + Mid Muffler X-Pipe delete. That's good enough for me and will still sound great.

 

[dopefish]

build a sleave with band clamps over the end and lengthen or shorten based on the desired tone, it basically cancels the resonant frequency of the exhaust pulses and it passes that chamber, they call that a helmholtz chamber, and thats what makes the SOLO's sooo cool.

EDIT... simplified, heres the helmholtz equation (i'm a nerd)

PS diff eq sucks!

Know how I know you are an engineer?...

 

[BigRed585Lbs]

"Once again, grasshoppers, the "simplified" formula for determining the length of a Helmholtz quarter-wave chamber dealing with the elimination of a known resonance frequency is as follows:

The speed of sound in feet per second (say, 1072feet/second)
divided by
The frequency you wish to eliminate (say, 128cycles/second)
equals
8.375feet/cycle (numbers divide/seconds cancel out)
This is the length of a full wave form; much too big to work with under a vehicle.
To get a quarter-wave length, divide 8.373feet/cycle by 4 to get 2.09373feet/quarter-wave length.
Multiply 2.09373feet/quarter-wave by 12inches/foot to get the chamber length of 25.125".

Tube diameter does not affect frequency, only the amount of attenuation.
This worked back in 2009, and it still works today.

Be sure to use your own target frequency in the formula.
The speed of sound figure is not going to vary enough to worry about. We're not rocket scientists.

REMEMBER: Be sure to use your own target frequency in the formula."

 

[RupertPupkin]

Let me dig up this old thread here.

I know its mentioned that the diameter of the pipe does not matter. What is a good length for the J pipe to get rid of the drone. Unfortunately I dont want to be messing around with band clamps, and adjusting/readjusting everything. Also, im trying to figure out my target formula and ummmmm.....WHAT!!??? :dunno::dunno::dunno: My fiance wants 80-100% of the drone to be eliminated or I cant get the procharger. I dont mind the drone, since ive been driving with drone for 4yrs +, but of course I want my procharger. Happy wife happy life. Appreciate the feedback

 

[Silver Bullet]

I have read that the diameter of the pipe does matter because that would increase the total volume of the chamber that you are creating.

 

[RupertPupkin]

I have read that the diameter of the pipe does matter because that would increase the total volume of the chamber that you are creating.

Oh great...another curveball. :comp:

 

[V84me]

These folks had a great selection, very tight bend radius, and excellent prices.
http://www.mandrel-bends.com/catalog/

 

[RupertPupkin]

Summit/jegs have pipes @ $15+

 

[todds87ss]

Let me dig up this old thread here.

I know its mentioned that the diameter of the pipe does not matter. What is a good length for the J pipe to get rid of the drone. Unfortunately I dont want to be messing around with band clamps, and adjusting/readjusting everything. Also, im trying to figure out my target formula and ummmmm.....WHAT!!??? :dunno::dunno::dunno: My fiance wants 80-100% of the drone to be eliminated or I cant get the procharger. I dont mind the drone, since ive been driving with drone for 4yrs +, but of course I want my procharger. Happy wife happy life. Appreciate the feedback

I have read that the diameter of the pipe does matter because that would increase the total volume of the chamber that you are creating.

That is why I listed part numbers.
30 inches.
2 inch diameter