Feeler: Equal Length Headers
10-03-2012, 04:18 PM
#161
I was just thinking how is he gonna mock these up? Since you asked for oem headers does that mean he is doing it without a engine or car to use for measurements?
Would think you'd need a car to guarantee fitment and figure out best way to run pipes.
Would think you'd need a car to guarantee fitment and figure out best way to run pipes.
10-03-2012, 06:51 PM
#164
Whats up with RDX owners?
iTrader: (9)
Theyre building them with witchcraft.
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Sonnick (10-05-2012)
a motor mount thread ?
10-03-2012, 09:23 PM
#167
Whats up with RDX owners?
iTrader: (9)
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civicdrivr (10-04-2012),
JCharged (10-04-2012)
10-04-2012, 11:27 AM
#170
Safety Car
Thread Starter
iTrader: (5)
Finishing up the collector side.
The man's busy. He will not be able to test fit.
Thanks for understanding. 
That is why I've been pushing to make this happen. I want to maximize the potential even J30 Full bolt-ons keep up with me. 
See below.
Everything's been taking care of. I needed the OEM manifolds/J-Pipe so that if people buy these sets, Most HFC's/Test-pipes will bolt up as well as the aftermarket exhaust system of their choice. I don't believe everyone is setting up for a custom exhaust so I wanted to keep that in mind.
I do magic, Hocus Pocus.
Taking the right steps to go about this. I know how this forum is, I'd be chastised and burned at the stake if I didn't execute it properly.
You've got it. Glad to see an OG chiming in.
The man's busy. He will not be able to test fit.
I do magic, Hocus Pocus.
Glad to see an OG chiming in.
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JCharged (10-04-2012)
10-04-2012, 01:36 PM
#172
Whats up with RDX owners?
iTrader: (9)
I was just commenting on the mount thread that dragged on forever. And then resulted in a few us blowing said mounts in less then 10k miles.
Last edited by civicdrivr; 10-04-2012 at 01:38 PM.
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JCharged (10-04-2012)
10-04-2012, 02:28 PM
#173
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10-04-2012, 02:31 PM
#174
Whats up with RDX owners?
iTrader: (9)
I see what you did there.
<-- Not amused
Ok, maybe a little
<-- Not amused
Ok, maybe a little
10-05-2012, 11:47 AM
#177
Whats up with RDX owners?
iTrader: (9)
10-05-2012, 02:33 PM
#178
All motor
^ Is the CL back in action?
10-05-2012, 02:48 PM
#179
Whats up with RDX owners?
iTrader: (9)
Define "action"....
10-15-2012, 10:52 AM
#182
All motor
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mikebikelife (10-28-2012)
10-27-2012, 06:33 PM
#185
Membistered Regember
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civicdrivr (10-28-2012)
11-07-2012, 01:01 AM
#186
Instructor
I've been reading up on some custom long tube headers on the j32 forum. Some sweet setups. I have a question will these production long tubes eliminate the j bent and be a straighter design? I am looking forward to these and will be purchasing a set.
11-10-2012, 12:00 PM
#187
Whats up with RDX owners?
iTrader: (9)
I assume you mean the j pipe? And they shouldnt, otherwise they'd be unequal length and performance would most likely suffer.
11-11-2012, 09:01 AM
#188
Senior Moderator
This is on a J series engine
Last edited by fsttyms1; 11-11-2012 at 09:05 AM.
11-11-2012, 09:03 AM
#189
Senior Moderator
11-11-2012, 02:07 PM
#190
Whats up with RDX owners?
iTrader: (9)
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Stephen00TL (11-11-2012)
11-11-2012, 09:45 PM
#192
Senior Moderator
like I said before, the biggest thing would be that the runners are the same length before merging.
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civicdrivr (11-12-2012)
11-12-2012, 12:51 AM
#193
I've been doing quite a bit of reading on this and its pretty split on whether or not they need to be. I've seen quite a few OEM exhausts that aren't the same in length, my expedition being one of them. I highly doubt there would be any bad effect or negative by doing so, especially with the gain in flow you would get. like I said before, the biggest thing would be that the runners are the same length before merging.
like I said before, the biggest thing would be that the runners are the same length before merging.
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mikebikelife (11-12-2012)
11-12-2012, 10:13 AM
#194
Senior Moderator
My brother said equal length headers essentially translates to power because of engine harmonics. Since it's a V-6 engine; every time it cycles it creates a burst of exhaust air. If the lengths don't support the engine harmony then the bursts could mash up and create flow issues which turns into a loss of power.
Exhaust headers with equal length tubes have been shown to develop slightly more power on an open exhaust system, but not when hooked up to a street system with mufflers. Fact is, most street motors with shorty headers will produce the same power as they would with expensive equal length headers.
Equal length tubes can produce more power, but they have to be the right length for the specific motor at the RPM range where you want the power. What that means is lots of custom fabrication and dyno testing, which translates into lots of time and money.
Equal length tubes can produce more power, but they have to be the right length for the specific motor at the RPM range where you want the power. What that means is lots of custom fabrication and dyno testing, which translates into lots of time and money.
11-12-2012, 12:47 PM
#195
Here's a link to a Subaru WRX that uses EL and UEL headers.
The RPMs seemed to drop faster after he let off gas.
More droned sound
UEL:
Deeper rich sound
A lot more sound like an American muscle car.
The description also says he's catless so that probably reduces some of his restrictions.
I'm not trying to debate this, EL or UEL whichever offers better gains, I'm all for it and willing to buy!
11-12-2012, 09:38 PM
#196
Whats up with RDX owners?
iTrader: (9)
^ You really can't compare EL/UEL Subie turbo headers with a setup for our car. With that said, its been proven time and time again that EL headers for Subies make more power.
11-12-2012, 10:03 PM
#197
Senior Moderator
^^^ Well I'm not a hardcore tuner or engineer so I just decided to relay the basics of it that were explained to me. Thinking about that logically, it would still seem beneficial to have everything flowing in-sync within the pipes.
Here's a link to a Subaru WRX that uses EL and UEL headers.
http://www.youtube.com/watch?v=O1knkRBZ4TU
EL:
The RPMs seemed to drop faster after he let off gas.
More droned sound
UEL:
Deeper rich sound
A lot more sound like an American muscle car.
The description also says he's catless so that probably reduces some of his restrictions.
Y
I'm not trying to debate this, EL or UEL whichever offers better gains, I'm all for it and willing to buy!
Here's a link to a Subaru WRX that uses EL and UEL headers.
http://www.youtube.com/watch?v=O1knkRBZ4TU
EL:
The RPMs seemed to drop faster after he let off gas.
More droned sound
UEL:
Deeper rich sound
A lot more sound like an American muscle car.
The description also says he's catless so that probably reduces some of his restrictions.
Y
I'm not trying to debate this, EL or UEL whichever offers better gains, I'm all for it and willing to buy!
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11-26-2012, 08:50 AM
#200
Senior Moderator