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X-pipe angle ? #2716373
11/16/19 11:52 AM
11/16/19 11:52 AM
Joined: Sep 2003
Posts: 11,960
north of coder
moparx Offline OP
Dreaming of implants
moparx  Offline OP
Dreaming of implants

Joined: Sep 2003
Posts: 11,960
north of coder
i want to build an X-pipe for my charger.
what is the common angle [if there is one] on most available "pre-built" units ?
30 degrees or so ? 45 ? all are different ? [can't be that much difference can there ?]
the headers have a very short, 3 1/2" collector. should i go 3 1/2" to the X, then 3" from there, or 3" right from the collector ?
TIA ! up
beer

Re: X-pipe angle ? [Re: moparx] #2716423
11/16/19 02:15 PM
11/16/19 02:15 PM
Joined: Jan 2003
Posts: 2,262
A garage in England
Tig Offline
top fuel
Tig  Offline
top fuel

Joined: Jan 2003
Posts: 2,262
A garage in England
These are 45 degrees, 4 ", It's what can fit under the car. For the street I just slip on a pair of modified 4" supertrapps

[Linked Image]


'74 Challenger..9.46 and 145.9 so far, easy pass. 4000lb!!!# N/A, 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 4:10's and 10.5s. Marsh Performance pump gas 655ci.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 14.18 @ 96.05 Best Mph 98.5
Re: X-pipe angle ? [Re: Tig] #2716658
11/17/19 10:44 AM
11/17/19 10:44 AM
Joined: Sep 2003
Posts: 11,960
north of coder
moparx Offline OP
Dreaming of implants
moparx  Offline OP
Dreaming of implants

Joined: Sep 2003
Posts: 11,960
north of coder
thanks tig. up

as to reducing the 3 1/2" to 3", where should that reduction take place ? or should i stay 3 1/2" for the whole system ?
beer

Re: X-pipe angle ? [Re: moparx] #2716667
11/17/19 11:04 AM
11/17/19 11:04 AM
Joined: Jan 2003
Posts: 2,262
A garage in England
Tig Offline
top fuel
Tig  Offline
top fuel

Joined: Jan 2003
Posts: 2,262
A garage in England
I'd stay 3 1/2" all the way through. With the bullet mufflers there is no noticeable difference in ET and though it's way quieter than open headers, it's still too loud for the street which is why we slip on a couple of supertrapps. We just replace them with turndowns at the track. If you just want a quiet (ish) 2 muffler system, pick your muffler wisely, some are better than others when it comes to flow / silencing. up
Edit: You can make em out here cool
[Linked Image]

Last edited by Tig; 11/17/19 11:08 AM.

'74 Challenger..9.46 and 145.9 so far, easy pass. 4000lb!!!# N/A, 655ci, Indy Maxx, T/R, Indy 600-13 X's, Street legal, pump gas, full interior, Cal-Tracs, mufflers, 4:10's and 10.5s. Marsh Performance pump gas 655ci.
RHD '68 Barracuda Fastback 323ci street/strip. Best ET 14.18 @ 96.05 Best Mph 98.5
Re: X-pipe angle ? [Re: moparx] #2716927
11/17/19 08:51 PM
11/17/19 08:51 PM
Joined: Jul 2004
Posts: 1,023
Arizona, USA
gsmopar Offline
super stock
gsmopar  Offline
super stock

Joined: Jul 2004
Posts: 1,023
Arizona, USA
I ran the 3.5 pypes on my wedge. I ditched it for the new engine combo.

[Linked Image]P9070002 by Greg Ault, on Flickr

Re: X-pipe angle ? [Re: gsmopar] #2717135
11/18/19 11:30 AM
11/18/19 11:30 AM
Joined: Sep 2003
Posts: 11,960
north of coder
moparx Offline OP
Dreaming of implants
moparx  Offline OP
Dreaming of implants

Joined: Sep 2003
Posts: 11,960
north of coder
too bad you are so far away. shipping would be a killer.
gives be a good idea of how to do it though.
beer

Re: X-pipe angle ? [Re: Tig] #2717141
11/18/19 11:34 AM
11/18/19 11:34 AM
Joined: Dec 2007
Posts: 12,080
Great Neck,LI,new york
hemi-itis Offline
I Live Here
hemi-itis  Offline
I Live Here

Joined: Dec 2007
Posts: 12,080
Great Neck,LI,new york
Originally Posted by Tig
These are 45 degrees, 4 ", It's what can fit under the car. For the street I just slip on a pair of modified 4" supertrapps

[Linked Image]


Nice home made "X",,,I did the same.


HEMI-ITIS has no cure. My condition is fully BLOWN!!!

New best 60ft,, 1.42,1/8, 6.0 @117,, 9.38 @146.75 with 6 lbs boost @3700 lbs

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