X pipe or not?
#4
Thats interesting, something I am concerned about is the drone. What mufflers are you using ? Thanks.
#5
#6
I have straight duals no X no H on my 72 350 w quiet stock style mufflers.
no drone at all its so quiet that all you hear is motor and intake when I punch it. Most everyone w an opinion thinks i need a louder muffler on there but I like it the way it is
no drone at all its so quiet that all you hear is motor and intake when I punch it. Most everyone w an opinion thinks i need a louder muffler on there but I like it the way it is
#8
I run an x pipe. It's quiet at idle. But when you punch it it sounds gnarly and sounds very aggresive. I have full length headers, x pipe, and hooker aero chambers with turndowns at the axle. It does not drone too much considering I have dumps imo.
#9
Are you talking performance or sound? From a performance perspective An x pipe is used to synch exhaust pulses from the two banks of the engine. This is supposed to help flow, which depending on your set up may result in performance gains. From a sound perspective, my subjective opinion is that in balancing the exhaust you loose some of the burble that is so characteristic of classic v-8 engines, maybe good maybe not. I've got a 72 350 with qjet, performer intake, shorty headers, and a pypes 2.5" x pipe exhaust with summit turbo mufflers and don't really like the sound, but I did get noticeable improvement in throttle response (especially at part throttle) with the addition of the headers and exhaust (and rejetting the carb.)
Last edited by adis; May 14th, 2012 at 03:52 PM.
#10
Both X and H balance the exhaust.
H is known to produce more torque
X is known to produce more horsepower.
To do true duals correctly, both pipes should equal the size of one. If you are going to run 2.5 inch exhaust, your true duals should be 1.25 inches each
H is known to produce more torque
X is known to produce more horsepower.
To do true duals correctly, both pipes should equal the size of one. If you are going to run 2.5 inch exhaust, your true duals should be 1.25 inches each
#11
I had the magnaflow system with the X pipe at first. It lasted about 2 months. Hated the sound! Went to true duals after cutting out the X. To much pop. Now I am running an H pipe with 18" case pypes race pro mufflers and so far I like it. 2.5" This is about the 4th set of mufflers to get it to my taste. Everyone is different. Just the short version Also, cubic inches and what power you have changes everything.
#13
I have some generic turbos the muffler shop put on in 1993. The Dynomax Super Turbos seem to be really popular and not too loud. There are a lot of threads on here about this subject. Some guys like them loud and some of us old guys like them nice and mellow.
#16
#18
To do true duals correctly, both pipes should equal the size of one. If you are going to run 2.5 inch exhaust, your true duals should be 1.25 inches each
As far a the x pipe goes, its really for scavenging. The momentum of the exhaust gas from one cylinder pulse on one side will in effect "pull" the next pulse of gases from the following cylinder on the opposite side. Kind of the same way tuned headers work.
#19
Ihave X-Pypes installed on my HO and i am not sure on the Rallye lol. I need to see what kind of pipes i have on there, I think they are H though. The X's were kinda hard to install for being my first time but it installed nicely overall.
#21
Redog, I'm not meaning to argue, but 2.5 equaling 2 1.25 pipes isn't correct. When talking about flow, its x-sectional area and the area of rwo 1.25" pipes is actually quite smaller than a 2.5" pipe.
As far a the x pipe goes, its really for scavenging. The momentum of the exhaust gas from one cylinder pulse on one side will in effect "pull" the next pulse of gases from the following cylinder on the opposite side. Kind of the same way tuned headers work.
As far a the x pipe goes, its really for scavenging. The momentum of the exhaust gas from one cylinder pulse on one side will in effect "pull" the next pulse of gases from the following cylinder on the opposite side. Kind of the same way tuned headers work.
#22
#23
I am running Hedman headers right now, send me some pics and give me the scoop on those ones you got. I kinda wanna get some stainless ones too lol
#24
Shooze! Why I gotsta send you pixtcha's when you be seeing dem on ma car win you see'd my car. Dey'ez da onez I gots on my car right now...nickel chromed Doug Thorley 1 7/8" primary wit da 3" collecta.
Shooze, I no you be gotsen some coin jacked up in dat pocket -o- yo's...jes send fo hundo my way an I beez bringen 'em wit me when I'm dere on Sundy...Oh yeah, fo sho...fo-got ta tell yo *** dat I beez comin on Sundy and beez dere ova night till Mundy...fo shizzle!
Shooze, I no you be gotsen some coin jacked up in dat pocket -o- yo's...jes send fo hundo my way an I beez bringen 'em wit me when I'm dere on Sundy...Oh yeah, fo sho...fo-got ta tell yo *** dat I beez comin on Sundy and beez dere ova night till Mundy...fo shizzle!
#26
An H pipe will enhance the hp/torque below the previous peak.
However, an H pipe will lose more up top than an X pipe will cost you down low.
But for a low compression '72, probably with a tall gear, I'd do an H pipe, I wouldn't even consider an X.
Steve, how much you want for your headers? Looking for another set of dyno headers, I already have a set of 2" Hookers, need something smaller.
Thanks
#27
You didn't read my post right. I said if you do true duals meaning no H or X pipe a 2.5 inch exhaust should be 2 pipes at 1.25 inches each
Tom
#28
I really shouldn't sell them yet, I've got to get the money together for the AR's I want.
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