Muffler size and configuration on Magnum RT?

[joseph]

I don't have a Magnum RT yet, but I will within 6 months, but I wanted to know the size of the mufflers, are they 14 or 18 inch long (body size)?, and are they offset inlet and outlet?
Tubing is 2.25 right?
I will get magnaflow mufflers while waiting for my RT, but they have 2 sizes 14 and 18 long (20 or 24 overall)

[OA-5599]

This will not help much:



I can measure them when I get home tonight (the cut off parts are on my garage floor) and post tomorrow if no one else does.

[bipto]

This will not help much:...

No hijack intended, but it would sure help me if you happened to know if that diagram applies to both RWD and AWD models...

Yes..? No..? Maybe..?

[mplatt911]

From all the research I did with my AWD-RT. Piping is all 2.25". Front two mufflers would need to be 14" body with offset/offset input and output, or you could use aone dual in/dual out like the Magnaflow setup. The rears are the 11" body size with same side offset. To duplicate the Magnaflow set up it requires 2.5" piping. Part numbers are 14386,14376 and 4" double wall tips. Just use the 2.25" part numbers for their website if you want to stay with 2.25" tubing.


Good luck.

[joseph]

Thanks for the info.
What I plan on doing is getting magnaflow mufflers; and DELETE the resonators and REPLACE them with 18inch jumbo chrome tips, like I used to have on my 95SS.
I 'm also thinking about putting 2 straight pipes in place of the stock X-pipe, to get that
V-8 rumble back where it belongs, what do you think about that?

[billapex]

Joseph, here's a link to the pictures of the stock parts that I removed FROM my RT: http://www.dodgemagnum.net/phpBB2/vi...amp;highlight=
Regarding removing the stock X section and replacing it with straight pipe, I personally wouldn't do that. The X promotes exhaust scavenging, which causes an exhaust pulse to help pull subsequent pulses through the pipes, thus increasing exhaust flow. By replacing it with straight pipes, you negate that benefit. Even putting an H in place of the X would be better than straight pipes. If you do install straight pipes, though, it would be interesting to hear what it sounds like.

[joseph]

Believe it or not, but I had an H pipe on my 95SS, and it sucked big time, there was less power, less torque, less throttle response, more resonnace and vibrations, and my nice V-8 rumble was gone.
2 weeks later I went back to the muffler shop and got rid of the H-pipe and went back to 2 straight pipes (stock) and all the good stuff was back.
An X-pipe may be better because of it's shape, but once I get my RT, after a month or so, I'll probably give it a try and put 2 straight pipes and see what happens, if it sucks, then I'll put the X-pipe back.

[Rev.Hammer]

You may have had the wrong diameter pipe in the H section. An X pipe is superior to the H because not only does it balance the pressure between the heads, but the pressure pulses also meet in a more organized fashion that actually promotes exhaust evacuation. In an X pipe the alternating pulses are summed and then divided.
An H pipe makes a "Primary-secondary" pulse pattern in the pipes instead of an evenly divided primary pulse group.
Just my 2 bits, but its true.

[joseph]

Can you elaborate on those "pulses".

[joseph]

PULSES???????????

[ImaThorp]

Flowmaster has released a kit that replaces the x pipe and all the way our the back to include special designed resonators and tips. saw it at SEMA it looked pretty good.

too bad i already did my own flowmaster system.

also Basani offers a better xpipe you could swap in for the stocker.

[joseph]

I'm not a fan of Flowmaster, had them on my 95SS and they were resonating too much, plus they have baffels :x inside the mufflers, Magnaflow is straight through :D

[Rev.Hammer]

Alow me to hold forth:
Okay. When a cylinder opens its exhaust valve a "pulse" of high pressure enters INTO the exhaust system. These pulses alernate FROM side to side as the cylinders open their exhaust valves. So the pulses come down the pipes in a left-right-left-right phasing. When they get to an H pipe part of that pulse intrudes over to the opposite side pipe creating a minor pulse in between the major ones that is not as strong as the orignal major.
SO, you get a major-minor pulse formation when using an H pipe. This causes a less pleasing sound waveform to occur. Sort of a straight-4cyl sound with little farts of sound between the major pulses.
With a Xpipe all of the major pulses are forced together (summed) and then evenly divided creating a true V-8 audio waveform. You get BOTH major pulses per pipe which is a much more smooth pleasing sound and also generates a more consistent pressure balance between the pipes which helps low-midrange torque.
Capiche?

[joseph]

Got it, thanks for the info.
So, even though the pipes are toghether, it will still sound like an amreican V-8?

[Rev.Hammer]

do you mean with the X or the H ?
Also the X helps to eliminate that nasty spikey peak waveform that we all despise because it is that waveform that causes the dreaded "drone".