Which is better 4-1 or 4-2-1 and please tell why below... Is there a major difference in performance? This is for a b18b
thanks


Modified by boywonda at 12:36 AM 6/30/2003

 

4-1 is usually better for top end..you may lose a little down low...while 4-2-1 is better low to midrange torque usually. What engine is this for?

 

I say 4-1, But I am going from my experince. Most small diss. engines have no bottom end. But thats prolly why my car can't get out of it's own way till 4,000 rpm. But above 4k it moves. 2000 civic si 1.6L (for now)

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote"> What engine is this for?</TD></TR></TABLE>
b18b

 

47 views and only 4 votes c'mon

 

I went with the dc 4-1 ceramic header on my d16y8. It gave me a nice mid to high increase in hp. It also makes a cool voosh noise during wot and vtec. Also it is a lot lighter over stock.

 

i have had both 4-2-1 and 4-1, i like the 4-2-1 because of the low end power, but the 4-1 has the top end power with a little low end sacrifice. it depends on what you want to do with motor. if its mainly daily driving, i hear people prefer 4-2-1, because they can use that low end power for quick pick up speed.
i am currently using a jdm 4-1 now, i like the top end.

 

what are your powerband plans? low-end "grunt" (if there's such a thing on hondacuras ) or high-end pull? base your decision on that. when i went back to all-motor, i wanted lots of low-end since it was becoming my daily driver again, so i went with a 4-2-1 header (lost my stock header somewhere), OEM exhaust, and an iceman intake, which is said to yield good low-end results. it's better to do that than to mix and match parts that gain power in different parts of the rev range, i think.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SOHC_MShue &raquo;</TD></TR><TR><TD CLASS="quote">4-1 is usually better for top end..you may lose a little down low...while 4-2-1 is better low to midrange torque usually. What engine is this for?</TD></TR></TABLE>

depends on who makes the header , i love my heade gives you also great mid - and top end power . its been compare with the jdm 4-1

 

is that the an-r header?

 

i say you rock a 421 on the LS motor

i dont think the top end that you expect out of the 4-1 will be in your gearing ration like it would be for the vtec motors. but that is what I think

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HybridHackBatch &raquo;</TD></TR><TR><TD CLASS="quote">i say you rock a 421 on the LS motor

i dont think the top end that you expect out of the 4-1 will be in your gearing ration like it would be for the vtec motors. but that is what I think</TD></TR></TABLE>yea, if you had vtec then go for a 4-1... but it also depends on how you are going to utalize your motor. drag or race.

 

I currently have a 4-2-1 RSR header on my B16A2, and it has served me very well for 2 years. Recently i've purchased a 4-1 JDM ITR header. Im still debating whether or not i should put it on. becuse i got to get the flanges modified.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HybridHackBatch &raquo;</TD></TR><TR><TD CLASS="quote">i say you rock a 421 on the LS motor

i dont think the top end that you expect out of the 4-1 will be in your gearing ration like it would be for the vtec motors. but that is what I think</TD></TR></TABLE>

 

The only headers made that are worth your money are 2.5" collector, and not many of them are 4-2-1. For the money, JDM DC or ANR or Header-Tech are your best buys. Don't bother with a USDM 2" collector, nearly zero power gains.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Daniel &raquo;</TD></TR><TR><TD CLASS="quote">is that the an-r header?</TD></TR></TABLE>

Ericks racing SS header, 2.5 collector

 

how do i set a pic under my name
i need to make the pix size smaller
need help
thanxs

 

any more info before I buy... the votes and the posts dont match up... everyones voting 4-1 but posting in favor of the 4-2-1... what gives... HELP ME

 

this would be so much easier if you just went turbo. no more worries about 4-2-1 vs. 4-1. you'll have other stuff to worry about but just not a header.

 

most ppl i know like and use 4-1

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Daniel &raquo;</TD></TR><TR><TD CLASS="quote">this would be so much easier if you just went turbo. no more worries about 4-2-1 vs. 4-1. you'll have other stuff to worry about but just not a header. </TD></TR></TABLE>

Wish I had the money for turbo
Maybe one day

 

hey i voted 4-1 but i ment to vote 4-2-1 ls motor has more bottom end power to work with go with the 4-2-1 thats what i used when i had my ls motor in my hatch. it worked great. go 4-1 with a v-tec motor

 

go 4-2-1 for the ls

 

you allready have more torque then most honda engines.....keep the tradition going


4-2-1

 

i've heard good things about people running the comptech 4-2-1 on an LS motor