| From | Message |
dweishaar
GenIII
 
10/19/2002
15:18:24
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 Subject: Exhaust Equalization
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Message:
I want to go with the true dual setup, but my buddy warned me that if I didn't do some kind of intersection or crosspipe, it would idle rough due to no exhaust equalization. Do I have to worry about this? or can I run 1 pipe for each header as planned?
2001 4.7 5-speed
One Eyed Fox
The Baja Dak
Have you jumped a dak..........lately?
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LiveDakota
GenIII
10/19/2002
15:35:03
|  RE: Exhaust Equalization
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Message:
Im not sure about the equilization, but most anyone who knows a bit about exhaust will tell you that with true duals you should run an "H" pipe (or crosspipe as you called it). Me and a buddy ran true duals without the "H" pipe on his 95 v-6 with manual tranny and didnt notice any idle problems if that helps you any.
Thomas C.
HUH? WHAT? I CANT HEAR YOU!
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EyeTrip
R/T
10/19/2002
16:19:30
| RE: Exhaust Equalization
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Message:
I think it's for harmonics. The "H" will cut down on droning in the cab.
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Zip-E
Gen II
10/19/2002
19:41:47
| RE: Exhaust Equalization
IP: Logged
Message:
dweishaar...hey-
Yes, what your buddy says happens sometimes. Exhaust plugs will back up on the left bank if the restriction is not relieved-best thing to do is to increase the pipe diameter slightly on both sides, make more subtle bends and use an x-pipe so that plugs from the right side will help create a low pressure area and equalize the flow. (The closer the x-pipe is to the motor, the more the effect.) You'll have better throttle response, and if you plumb the o2's in the right location you won't get a code.
Oh, and you will get a sweeter note with the x-pipe. -talk at you later later
...Zip...
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sandman
Dodge Dakota
JOIN HERE
10/19/2002
20:56:25
| RE: Exhaust Equalization
IP: Logged
Message:
Yes you should run a crossover pipe. It can also help to scavange the gas's out the pipe. One pulse creates a vaccum makeing it esier for the next cylinder to empty out. This way alternateing cylinders help each other out. The distance from the collector must be tuned to your vechile. I do not kow the formula to use but I am sure someone on this site proably has it or a link to it. It helps most at higher RPM's and was made popular buy raceing sports. I think that it is still in use by Nascar.
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