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#637706 - 01/12/09 09:45 PM X PIPE OR H PIPE?  
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T-Top Tony Offline
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T-Top Tony  Offline
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Rialto, CA
What do you guys recommend x pipe or h pipe? what are the differences?


1987 Monte Carlo SS with T-Tops, lowered with Belltech drop spindles and lowering springs. LS1 brakes up front and LT1 brakes in the rear. Trying to make a comeback!
whiteside whitefront
#637707 - 01/12/09 09:47 PM Re: X PIPE OR H PIPE? [Re: T-Top Tony]  
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juangomez22 Offline
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houston tx
x pipe

#637715 - 01/12/09 10:06 PM Re: X PIPE OR H PIPE? [Re: juangomez22]  
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tri5ss Offline
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tri5ss  Offline
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Lebanon,Missouri
X!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!


Cars Ain't Art!
They Are Meant To Be Driven!
#637724 - 01/12/09 10:41 PM Re: X PIPE OR H PIPE? [Re: tri5ss]  
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Gruvin Offline
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15+ Year
Gruvin  Offline
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15+ Year

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Texas
x


My first SS! Sold Jan 2004
[Linked Image]
87 SS bought 9-5-04: Sold 6-18-2010 - project 87 finds a new home with another undisclosed MonteCarloSS.com member!
#637732 - 01/12/09 10:57 PM Re: X PIPE OR H PIPE? [Re: Gruvin]  
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JMO Offline
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Mechanicville, Virginia
do the sounds of them differ? or is it about flow?



84' SS,350,700r4 w/ shift kit, mild cam, l/t headers, true duals to 40's
Sweetness!
#637733 - 01/12/09 11:08 PM Re: X PIPE OR H PIPE? [Re: JMO]  
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carloracer 1987 Offline
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carloracer 1987  Offline
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Ithaca,ny (Enfeild)
Its about flow, sound is diffrent yes but you will get the best proformance out of a X pipe setup. Im having my montes done with a x pipe when spring comes around


http://www.cardomain.com/id/carloracer1987

http://www.motortopia.com/carloracer1987/cars

1987 Monte carlo ss-Getting a paint job
1991 Gmc sierra extended cab-Gone
2003 silverado ECSB- Daily driver
My most active Email adress is car2win2000@yahoo.com
#637737 - 01/12/09 11:16 PM Re: X PIPE OR H PIPE? [Re: carloracer 1987]  
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BADD87SS Offline
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BADD87SS  Offline
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belton, mo
An H-pipe only helps u at certain rpms, but an X-pipe helps u at all rpms.........



87 SS/54767 original miles
07 Monte SS
76 Monte triple black 400sb electric sunroof/buckets
86GMC4X4/355/700R4/4.56
#637739 - 01/12/09 11:18 PM Re: X PIPE OR H PIPE? [Re: BADD87SS]  
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JMO Offline
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Mechanicville, Virginia
gotcha



84' SS,350,700r4 w/ shift kit, mild cam, l/t headers, true duals to 40's
Sweetness!
#637743 - 01/12/09 11:35 PM Re: X PIPE OR H PIPE? [Re: JMO]  
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SS402 Offline
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Beaverton, Oregon
I'm still debating whether i should 'chime in'.


George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People
#637751 - 01/12/09 11:52 PM Re: X PIPE OR H PIPE? [Re: SS402]  
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4-speeds Offline
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surrey, b.c.
dont expect to see tonnes of power from an x pipe vs a h pipe.. they're too far back in our cars to make a lot of power difference... sound yeah, it'll sound different.


btb.. a real x pipe, the one that actually makes a lot more power etc., looks nothing like an 'x pipe'


диđяΣш
#637758 - 01/13/09 12:07 AM Re: X PIPE OR H PIPE? [Re: SS402]  
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SS402 Offline
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SS402  Offline
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Beaverton, Oregon
in a nutshell: their both great mod's in theory..lets start with some exhaustive research.. both of them equalize exhaust pulses which increases scavenging, this scavenging effect aka 'the 5th cycle' helps to pull the spent exhaust gases out of the combustion chamber, because the intake is opening while the exhaust valve is closing the vacuum created by the exhaust actually helps pull more fresh air/fuel mixture into the combustion chamber.. enough of that, the h-pipe is most effective when mounted as close to the collector flange as possible, usually within 12-15". The h-pipe adds 'effective collector length' which shifts/broadens the torque curve, the way to find out how much collector length you need is to paint the exhaust pipe behind the collectors, drive it around a little and cut the pipe where the paint stopped burning, that's how much longer the collector needs to be, this is also the point where you would reduce the pipe diameter by 1/2" and run back to the mufflers, the h-pipe is the poor boys way of adding effective collector length... since most of us aren't willing to go thru that much trouble it's easier to use an x-pipe which also equalizes exhaust pressure but does nothing for tuning the collectors.. there is most likely some turbulence associated with an h-pipe so the smooth flowing characteristics of the x-pipe give it the thumbs up... the bottom line: IF(and that's a big if) i was designing a new exhaust for the Monte i would go thru the trouble of tuning the collectors ruling out the need for an h-pipe, then use a smooth flowing x-pipe to equalize the pulses and let er eat.


George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People
#637760 - 01/13/09 12:13 AM Re: X PIPE OR H PIPE? [Re: SS402]  
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pazzo1969 Offline
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Mableton, GA
x2 on that one George


President Wicked Rides/Wicked Montes Georgia chapter
#637788 - 01/13/09 01:34 AM Re: X PIPE OR H PIPE? [Re: pazzo1969]  
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84montecarloss Offline
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84montecarloss  Offline
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Cedar Falls, Iowa
good ol' george always has an explanation...if only i had that mind...


1984 Pontiac Fiero
1979 Kawasaki KZ1000
2017 Camaro SS
#637791 - 01/13/09 01:37 AM Re: X PIPE OR H PIPE? [Re: 84montecarloss]  
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Onebadbowtie86 Offline
10+ Year
Onebadbowtie86  Offline
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Traverse City Michigan
so the answer is.....XXXXXXXX i like mine!


'86 Monte carlo ss-Frame off resto-mod.
Ls2/t56/8.5"
#637814 - 01/13/09 02:33 AM Re: X PIPE OR H PIPE? [Re: Onebadbowtie86]  
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Arti Offline
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Arti  Offline
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Long Island NY
Has any one actually priced out how much would it to be to due a swap for a X pipe..i have Hooker Header on now but was going to finish up the rest with a set of flow master 40 series mufflers.. and a X pipe .. was wondering how much should i be looking to spend to get the X pipe in there..


#637829 - 01/13/09 03:15 AM Re: X PIPE OR H PIPE? [Re: Arti]  
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jigsaw Offline
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Laredo TX
would it be fine if instead of cutting the header flange u used a 3" to 3" header reducer and ran the appropiate lenght collector needed and then used a 3" to 2.5" coupling and ran 2.5 from there on back think

#637831 - 01/13/09 03:29 AM Re: X PIPE OR H PIPE? [Re: jigsaw]  
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T-Top Tony Offline
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Rialto, CA
ok is their a certain distance that the x pipes has to be from the headers or the mufflers?


1987 Monte Carlo SS with T-Tops, lowered with Belltech drop spindles and lowering springs. LS1 brakes up front and LT1 brakes in the rear. Trying to make a comeback!
whiteside whitefront
#637916 - 01/13/09 12:21 PM Re: X PIPE OR H PIPE? [Re: T-Top Tony]  
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SS402 Offline
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Beaverton, Oregon
Originally Posted By: Tony
ok is their a certain distance that the x pipes has to be from the headers or the mufflers?
no, just put it between the collectors and the mufflers.. since the exhaust pipes are usually routed beside the tranny the closest place would be behind the tranny..


George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People
#637917 - 01/13/09 12:28 PM Re: X PIPE OR H PIPE? [Re: jigsaw]  
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SS402 Offline
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SS402  Offline
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Beaverton, Oregon
Originally Posted By: jigsaw
would it be fine if instead of cutting the header flange u used a 3" to 3" header reducer and ran the appropiate lenght collector needed and then used a 3" to 2.5" coupling and ran 2.5 from there on back think
now your on the right track, a better way would be to cut the flanges off and use slip-fit collector extensions roughly 2' long, drive it for a bit then cut em where the paint stops burning.. this is a lot of work and you should consider if the labor is worth the benefit..


George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People
#637919 - 01/13/09 12:34 PM Re: X PIPE OR H PIPE? [Re: SS402]  
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tri5ss Offline
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tri5ss  Offline
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Lebanon,Missouri
What George said is correct. The problem with fact\theory and actuality is that we tend to run out of room under the car very quickly when it comes time to actually do the exhaust 100% correctly to the way that theory tells us to do it.
The cheapest {least expensive} way of putting an X-pipe setup on the 4th. gen g-bodies is to buy a Hedman X-pipe kit from Summit. Summit also sells mandrel bent 2 1\2" tailpipes by Flow Master. Then you can go have fun in your driveway without the need of a muffler shop. jmho


Cars Ain't Art!
They Are Meant To Be Driven!
#637924 - 01/13/09 12:43 PM Re: X PIPE OR H PIPE? [Re: tri5ss]  
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GearedSS Offline
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GearedSS  Offline
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stratford,ontario. canada
Originally Posted By: tri5ss

The cheapest {least expensive} way of putting an X-pipe setup on the 4th. gen g-bodies is to buy a Hedman X-pipe kit from Summit. Summit also sells mandrel bent 2 1\2" tailpipes by Flow Master. Then you can go have fun in your driveway without the need of a muffler shop. jmho



thats what i did, i bought the kit off a member here, but haven't installed it yet.

#638038 - 01/13/09 09:14 PM Re: X PIPE OR H PIPE? [Re: GearedSS]  
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chevy85ss Offline
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chevy85ss  Offline
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Desert Hot Springs CA
X pipe! i got mine installed for 100 bucks more when i got my exhaust done. sounds really nice. i believe total was about 750. headers, x-pipe and flow master 40... im still wondering if that was a good deal. what do ya think?

#638049 - 01/13/09 09:49 PM Re: X PIPE OR H PIPE? [Re: chevy85ss]  
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SS402 Offline
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SS402  Offline
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Beaverton, Oregon
here's a sweet 2.5" x-pipe for $45

http://store.summitracing.com/partdetail.asp?autofilter=1&part=BIG%2D53620FLT&N=700+4294921571+4294863086+4294891681+4294799363+4294784234+115&autoview=sku


George
Monte, Gone but not forgotten

The More I Learn About Dogs
The Less I Like About People
#638062 - 01/13/09 10:12 PM Re: X PIPE OR H PIPE? [Re: chevy85ss]  
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T-Top Tony Offline
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T-Top Tony  Offline
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Rialto, CA
Originally Posted By: chevy85ss
X pipe! i got mine installed for 100 bucks more when i got my exhaust done. sounds really nice. i believe total was about 750. headers, x-pipe and flow master 40... im still wondering if that was a good deal. what do ya think?


well i paid 450 to get my hooker headers installed and new piping to the rear but i already had the flowmasters. Some guy is charging me 100 to install an x pipe on mine so by the time you add it all up its pretty much the same you paid for yours


1987 Monte Carlo SS with T-Tops, lowered with Belltech drop spindles and lowering springs. LS1 brakes up front and LT1 brakes in the rear. Trying to make a comeback!
whiteside whitefront
#638193 - 01/14/09 04:42 AM Re: X PIPE OR H PIPE? [Re: T-Top Tony]  
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84supersport Offline
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Louisville, KY
Jegs also sells a universal x-pipe for like $85. You'll need to buy a couple more pieces of pipe from the local pargts store to complete it.


84 Monte SS stolen September 2012. 077 DFE Jefferson County KY plate. $2500 reward. Vortec headed 350ci, th350, 3:73 limited slip cast aluminum cover, Autometer gauges, Pro-Stick, 2.5" fiberglass hood.



Matt
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