X Pipe, I don't get it.

[LimoMerc]

:confused: Could someone please enlighten be as to how exhaust crossing paths is more efficient.

Thank You.

[torinodan]

The X-pipe balances the two banks on a V-configured engine, which also helps to smooth the powerband and increase the exhaust scavenging. Thats all I have, anyone else?

[Fourth Horseman]

I've heard that h-pipes are better at building low-end torque than x-pipes. Is that true? I wish I understood the physics behind it if so.

[torinodan]

Good reading info. A few links:

http://www.advanceautoparts.com/english/youcan/html/pht/pht20011101xp.html
http://www.cadillacfaq.com/faq/answers/xpipe.html
http://www.lincolnvscadillac.com/Lincoln-cadillac-archive/topic.php/1579-1.html
http://www.chevyhiperformance.com/techarticles/67698/

[gray bear]

:confused: Could someone please enlighten be as to how exhaust crossing paths is more efficient.

Thank You.Due to the firing order of a V8 there are two cylinders on each side that fire one after another. The X-pipe or H-pipe relieves the pressure build up of two cylinders firing together on the same side, as soon as it hits the x or h pipe. That is why it is better than totally separated duals, and IMHO the closer the X-pipe or H-pipe is to the heads the better.

[BillyGman]

I've heard that X-pipes are mostly needed for a little extra back pressure when you do away with the cats, but that if you stay with some sort of cats, then the extra back pressure created by the X-pipe isn't needed nor beneficial. However, this just might be one of those issues that will never be proven nor solved unless someone uses an X-pipe with cats, and then w/out cats, and then also removes the X-pipe, and uses just a straight dual exhaust system, and has the car dynoed for each of the those three phases of exhaust configuration. And who's going to go through all of that? Especially when it probably doesn't mean anymore than perhaps a 10 HP loss or gain, which you won't even feel on the street. However, I suspect that an X-pipe changes the exhaust sound a little bit. But again, I haven't any proof of that.

[torinodan]

Because of the X pipe I had installed the sound did change. I like it as the sound did go deeper and seemed like performance went up. As far as doing this change with and without cats test, I have stories about that too. PM's please

[TAF]

This is from probably THE authority on exhaust...ANYWHERE...those of you that know him, know this to be true.

Buster Smith (whom I purchased Grand Mufflers from):
"X-pipe or H-pipe BOTH do the same thing (as stated above quite acurately by Gray Bear^^^) the difference between the two is less than a mosquito fart. H-pipe is old school, so to be true when doing classic muscle, or if there is only room for an H...do the H...do the X on late model cars"

We did a '72 Dodge Challenger, a '70 Hemi Cuda this week and are doing a '67 Goat today...they'll get an H....

Marauders and other late-model cars get Xs, both Hs and Xs are custom built by us.

[martyo]

Marauders and other late-model cars get Xs, both Hs and Xs are custom built by us.

And, the X you make for the Marauder is a sweet unit! I said "unit" heh heh....

[oldekid]

I still have an "H-pipe", but I think "X" just sounds much better. . . . you know, like X-Files, X-Rated or X-Wife (not you my dear).
:beer:

[Shaft333]

To throw another one in the mix, how does an intake with an exhaust crossover compare?
The intake gaskets for my Pontiac included block-offs for this. Supposedly this was more about the heater than performance - however I know of at least one friend of mine that felt that crossover had some similar effect to the sound of an exhaust as would a crossover of X or H type.

[SergntMac]

IMHO the closer the X-pipe or H-pipe is to the heads the better.
Perhaps this is true when considering strictly performance gains, however, placement is critical to noise too. The placement of the X-H pipe affects exhaust system vibration. Vibration which eventually shapes tone, and what is one man's tone, is another's drone. Place it too far forward, or, too far aft, and your performance gains won't matter.

[metroplex]

The X-pipes will make the nicest V8s sound like tinny ricer exhausts. The H-pipes keep that throaty growl.

[STLR FN]

I don't know about that. I have a 17" Magnaflow w/ an internal X on my F-150 and that thing sounds mean as all hell.


The X-pipes will make the nicest V8s sound like tinny ricer exhausts. The H-pipes keep that throaty growl.

[SergntMac]

I don't know about that. I have a 17" Magnaflow w/ an internal X on my F-150 and that thing sounds mean as all hell.
Exhaust tone is also affected by cubic inch displacement, don't you have 5.4L in that F-150?

You can change pipes all day long, even run straight pipes, or, open headers, and the tone will only get so low with a 281 CID. Add to this, the high RMP range of the 4V DOHC over the 2V SOHC, and any engine will whine more above 5000 RPM. In this range, my engine makes more noise than my exhaust.

[STLR FN]

I have the 4.6(281) in my 150. I was just replying to Metroplex's vague reference to V8's sounding like ricer's Now if he was refering to 4v whining more at higher RPM's then he should have stated so.
Exhaust tone is also affected by cubic inch displacement, don't you have 5.4L in that F-150?

You can change pipes all day long, even run straight pipes, or, open headers, and the tone will only get so low with a 281 CID. Add to this, the high RMP range of the 4V DOHC over the 2V SOHC, and any engine will whine more above 5000 RPM. In this range, my engine makes more noise than my exhaust.

[STLR FN]

Okay, I understand

[SergntMac]

I have the 4.6(281) in my 150. I was just replying to Metroplex's vague reference to V8's sounding like ricer's Now if he was refering to 4v whining more at higher RPM's then he should have stated so.
Okay, my bad, we're cool. Just asking which engine you have, nothing more. I'm getting used to vague referrence anyway. BTW, I get a lot of compliments on my exhaust tone, one indifferent opinion doesn't upset my day.

[rocknrod]

...I was just replying to Metroplex's vague reference to V8's sounding like ricer's .....He's just upset, doesnt own a Merc Marauder:D

[LimoMerc]

Thanks guys, this sounds (get it....sounds) like a mod for me. I want it to sound as mean as it looks:coolman: . I'm leaning toward the H pipe now.

:rasta: I got your H pipe right here!!!

[RF Overlord]

I'm leaning toward the H pipe now.Um, the Marauder already HAS an H-pipe...

[LimoMerc]

I knew that:run:

[FordNut]

The X-pipes will make the nicest V8s sound like tinny ricer exhausts. The H-pipes keep that throaty growl.
Have you ever heard one? That hasn't been my impression and I have heard many of them, mine included.

[Smokie]

The X-pipes will make the nicest V8s sound like tinny ricer exhausts. The H-pipes keep that throaty growl.Ricer??? You tell me:X_PIPE (http://www.crownvic.us/~hwycruiser/marauder/videos/smokey%20magnaflows.wmv)

[STLR FN]

Sorry but that has rice written alllllllllllllllll over it. :rolleyes:
Ricer??? You tell me:X_PIPE (http://www.crownvic.us/~hwycruiser/marauder/videos/smokey%20magnaflows.wmv)

[Smokie]

Sorry but that has rice written alllllllllllllllll over it. :rolleyes:Yeap, can't argue with the facts.:lol:

[Tallboy]

The X-pipes will make the nicest V8s sound like tinny ricer exhausts. The H-pipes keep that throaty growl.Speaking as someone who owns 2 Ford V8s, one with an "H" pipe, and one with an "X" pipe, I can say with firmness of conviction you don't have the slightest idea of what you're talking about.