Re: big exhaust systen on higher hp car???
[Re: John Burdine]
#1565920
01/20/14 01:07 AM
01/20/14 01:07 AM
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Joined: Jan 2003
Posts: 27,421 Balt. Md
383man
Too Many Posts
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Posts: 27,421
Balt. Md
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Do you plan to run tailpipes out to the rear bumper ?
Never mind as I see where I missed that. Dont know how much room you have but are you planning to downsize the tailpipes to maybe 3" ? Ron
Last edited by 383man; 01/20/14 01:08 AM.
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Re: big exhaust systen on higher hp car???
[Re: John Burdine]
#1565921
01/20/14 01:13 AM
01/20/14 01:13 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Posts: 52,972
Romeo MI
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John... if you can get the muffs at the bumper it helps due to the exhaust being cooler back there... if you run a X pipe they do work BUT its suppose to be 1/2 way from the end of the primaries to the muffs or the expansion point(if no muffs are used)... A H-pipe you put at the end of the collectors(or close to the primaries)
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Re: big exhaust systen on higher hp car???
[Re: John Burdine]
#1565923
01/20/14 01:27 AM
01/20/14 01:27 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Quote:
is the x-pipe worth the extra bends?
Yes.. it does add HP to a system with muffs... if it has back pressure... so if you run a straight thru muff MAYBE you dont want the X.... its your choice based on back pressure... all it does is kick pulses back and forth
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Re: big exhaust systen on higher hp car???
[Re: John Burdine]
#1565924
01/20/14 01:28 AM
01/20/14 01:28 AM
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Joined: Jan 2003
Posts: 19,363 Las Vegas
Al_Alguire
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IMO yes an X pipe is worth it. Will even quiet the car down a good deal. IF you have the room.
"I am not ashamed to confess I am ignorant of what I do not know."
"It's never wrong to do the right thing"
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Re: big exhaust systen on higher hp car???
[Re: MR_P_BODY]
#1565925
01/20/14 01:32 AM
01/20/14 01:32 AM
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Joined: Jan 2007
Posts: 437 south central pa
bdaz smblk
mopar
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mopar
Joined: Jan 2007
Posts: 437
south central pa
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A friend of mine that runs a 7 sec true ten five n/a combo has a shop with a chassis dyno.He has tried everything and said on a car like yours a h pipe makes more power.Now on like a mustang or a car that runs 11 or 12's he said a x pipe has made more power.hope this helps.
3120lb, small block, 10.5" tire, NA, through exhaust, full int, WITH 83/4 REAR, 9.0 at 150mph
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Re: big exhaust systen on higher hp car???
[Re: bdaz smblk]
#1565926
01/20/14 01:38 AM
01/20/14 01:38 AM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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Master
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Romeo MI
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Quote:
A friend of mine that runs a 7 sec true ten five n/a combo has a shop with a chassis dyno.He has tried everything and said on a car like yours a h pipe makes more power.Now on like a mustang or a car that runs 11 or 12's he said a x pipe has made more power.hope this helps.
I would say that his data was with some type of muffs (with the 11-12s car) which again is a back pressure thing... I like the H-pipe myself but it has to be up close to the engine(primaries) to be efficient
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Re: big exhaust systen on higher hp car???
[Re: John Burdine]
#1565929
01/20/14 09:49 AM
01/20/14 09:49 AM
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Joined: Feb 2011
Posts: 4,302 Nebraska
72Swinger
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master
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Nebraska
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You have to pay close attention to how the x merge is made. If the two pipes are merged to close together it will defeat to purpose and cause a lot of restriction.
Mopar to the bone!!!
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Re: big exhaust systen on higher hp car???
[Re: 572charger]
#1565933
01/21/14 09:56 AM
01/21/14 09:56 AM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
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When I was running 9.80's with a 3.5" exhaust I added an x-pipe and it made the car sound really nice, and didn't slow it down one bit, system weighed about 75 pounds and the car ran a couple hundredths quicker and a tiny bit more mph than open headers.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: big exhaust systen on higher hp car???
[Re: kielbasa]
#1565937
01/22/14 01:30 PM
01/22/14 01:30 PM
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Joined: Jan 2003
Posts: 17,918 Akron, Ohio
ProSport
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Big Hemi's are a different ball game, they sometimes don't like an exhaust system. Some guys make them work though, such as 572Charger.
1970 Challenger, all aluminum 528 Hemi, HDK suspension, Tremec 5 speed manual
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Re: big exhaust systen on higher hp car???
[Re: ProSport]
#1565938
01/22/14 01:46 PM
01/22/14 01:46 PM
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Joined: Jan 2003
Posts: 13,363 Marion, South Carolina [><]
an8sec70cuda
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Marion, South Carolina [><]
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Quote:
Big Hemi's are a different ball game, they sometimes don't like an exhaust system. Some guys make them work though, such as 572Charger.
Mine doesn't like mufflers. I still use my 4" H pipe system on the street, but at the track I put my short 4" bullets right on the collectors.
CHIP '70 hemicuda, 575" Hemi, 727, Dana 60 '69 road runner, 440-6, 18 spline 4 speed, Dana 60 '71 Demon, 340, low gear 904, 8.75 '73 Chrysler New Yorker, 440, 727, 8.75 '90 Chevy 454SS Silverado, 476" BBC, TH400, 14 bolt '06 GMC 2500HD LBZ Duramax
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