4-2-1 vs 4-1 headers

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Jun 24, 2003 | 02:36 PM

ofl

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From: Richmond, Va, United States

4-2-1 vs 4-1 headers

im gettin headers soon.....4-2-1 or 4-1......loosing back pressure with the 4-2-1 so ife heard????? (on a 97' acura integra gsr)

Jun 24, 2003 | 02:38 PM

976

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From: Extraordinary Machine

Re: 4-2-1 vs 4-1 headers (ofl)

4-1 design - high end power
4-2-1 design - low end power

Well, give or take, however more power is produced with the 4-1 design IMHO!

Best design, JDM ITR 4-1... Hands down...

Jun 24, 2003 | 02:39 PM

Big Phat R

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From: Kelowna Canada

Re: 4-2-1 vs 4-1 headers (ofl)

No discernable difference imo (given similar length primaries and secondaries)

Jun 24, 2003 | 02:39 PM

Rguy

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From: NJ

Re: 4-2-1 vs 4-1 headers (ofl)

First, your car only has need for one header, do not get headerS. Second, a 4-2-1 design is typically for mid range power and torque where a 4-1 design is for upper end power. Do not worry about "back pressure" or losing it. Toda, Mugen, Hytech, SMSP and sp00n are excellent headers to choose from. But if you want a bargain, JDM DC sports 4-1 or OEM ITR 4-1 is a good bet.

Jun 24, 2003 | 02:51 PM

Integrity

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From: Baltimore, MD, USA

Re: 4-2-1 vs 4-1 headers (Rguy)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rguy »</TD></TR><TR><TD CLASS="quote">First, your car only has need for one header, do not get headerS. Second, a 4-2-1 design is typically for mid range power and torque where a 4-1 design is for upper end power. Do not worry about "back pressure" or losing it. Toda, Mugen, Hytech, SMSP and sp00n are excellent headers to choose from. But if you want a bargain, JDM DC sports 4-1 or OEM ITR 4-1 is a good bet.</TD></TR></TABLE>What would you recommend more, the OEM ITR or the JDM DC? Also, is $340 shipped a good price for a Ceramic Coated JDM DC? Thanks...

Jun 24, 2003 | 03:49 PM

976

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From: Extraordinary Machine

Re: 4-2-1 vs 4-1 headers (Integrity)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Integrity »</TD></TR><TR><TD CLASS="quote">What would you recommend more, the OEM ITR or the JDM DC? Also, is $340 shipped a good price for a Ceramic Coated JDM DC? Thanks...</TD></TR></TABLE>

Oh, go to http://www.inlinefour.com ASAP, they have a sale, DC Sports ceramic (which is much better than stainless steel, hence ceramic traps heat...) JDM ITR style 4-1 header for a crazy price of $280.00 - I would hit it up before they run out!

Jun 24, 2003 | 04:19 PM

Integrity

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From: Baltimore, MD, USA

Re: 4-2-1 vs 4-1 headers (w00t!)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by w00t! »</TD></TR><TR><TD CLASS="quote">

Oh, go to http://www.inlinefour.com ASAP, they have a sale, DC Sports ceramic (which is much better than stainless steel, hence ceramic traps heat...) JDM ITR style 4-1 header for a crazy price of $280.00 - I would hit it up before they run out!</TD></TR></TABLE>Thanks! You probubly just saved me $25 bucks. I'm going to call inline 4 tommorrow to see if they'll take a check. Thanks for the tip man!

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Jun 24, 2003 | 11:55 PM

Pompiuses

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Re: 4-2-1 vs 4-1 headers (ofl)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by ofl »</TD></TR><TR><TD CLASS="quote">im gettin headers soon.....4-2-1 or 4-1......loosing back pressure with the 4-2-1 so ife heard????? (on a 97' acura integra gsr)</TD></TR></TABLE>

4-2-1 rules both midrang and top end (Toda and SMSP):
http://bob123e.tripod.com/thegreatheadertest/

Modified by Pompiuses at 9:05 AM 6/25/2003

Jun 26, 2003 | 04:52 AM

markb16

Joined: Jun 2003

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From: Hopewell Junction, New York, USA

Re: 4-2-1 vs 4-1 headers (Integrity)

i have a 98 ITR with a DC 4-1 stainless steel header it works very well mid-high end power it cost me $399 plus shipping like $30 or $40 from http://www.optauto.com

Jun 26, 2003 | 06:12 AM

#10

MattY81

Joined: Jun 2003

Posts: 29

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From: Sydney, NSW, Australia

is heat wrapping headers beneficial?

i dont see many heat wrapped toda/mugen headers around. ppl like hte bling too much or what?

Jun 26, 2003 | 06:45 AM

#11

AussieK24

Senior Member

Joined: Jan 2002

Posts: 1,353

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From: Sydney Australia

Re: (MattY81)

I wrapped mine but I knew they were only temporary headers. Wrap will kill your headers VERY quickly.

Jun 26, 2003 | 07:14 AM

#12

gaskleppie

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Joined: Jun 2002

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From: Black ITR From Holland, Holland

Re: (AussieB20vtec)

HKS header rules!

Its a combined 4-1 and 4-2-1 header. Massif low end torque and high peak power.
I did 217,5 HP @ the engine with only a Injen CAI, HKS header and Hi power exhaust.

Jun 26, 2003 | 07:16 AM

#13

gaskleppie

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From: Black ITR From Holland, Holland

Re: (gaskleppie)

Wrapping my old DC sports Stainlessteel header lowerd my oil temp by 20 degrees at high load.

Jun 26, 2003 | 07:18 AM

#14

Chris N

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Re: (gaskleppie)

Good 4-2-1 and 4-1 headers (plural) have similar properties, I don't understand where the generalizations are coming from, they just aren't true.

Jun 26, 2003 | 07:19 AM

#15

Willard

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From: Charlotte

Re: (MattY81)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by MattY81 »</TD></TR><TR><TD CLASS="quote">is heat wrapping headers beneficial?</TD></TR></TABLE>
It 'may' be.... but coating is a better option IMO.

Look at this coating job.
https://honda-tech.com/zerothread?id=498735

Jun 26, 2003 | 07:46 AM

#16

Lonerider

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Re: 4-2-1 vs 4-1 headers (w00t!)

inline4 has the JDM ITR header listed for $388?
is this just a typo or was the sale really short?

Jun 26, 2003 | 08:40 AM

#17

Ex-ITR5874

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From: German Ambassador, Hessen

Re: (gaskleppie)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by gaskleppie »</TD></TR><TR><TD CLASS="quote">HKS header rules!

Its a combined 4-1 and 4-2-1 header. Massif low end torque and high peak power.
I did 217,5 HP @ the engine with only a Injen CAI, HKS header and Hi power exhaust.

</TD></TR></TABLE>

Dyno ?

Jun 26, 2003 | 12:57 PM

#18

Integrity

Junior Member

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From: Baltimore, MD, USA

Re: 4-2-1 vs 4-1 headers (Lonerider)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Lonerider »</TD></TR><TR><TD CLASS="quote">inline4 has the JDM ITR header listed for $388?
is this just a typo or was the sale really short?</TD></TR></TABLE>The price must keep changing. I looked at it yesterday and it was over 300, now its back to 280. I don't know, I bought mine from ImportHorizon.com for 315 w/shipping.