93Civic_hb

I have a EG hatchback that has a GS-R motor transplant. I want to buy a header for it and I really want the DC Sport JDM ceramic coated header with the 2.5" collector, but I'm worried about the ground clearence. I'm lowered quite a bit and I heard that this header hangs the lowest to the ground compared the the regular 4-1 header, and better yet the 4-2-1. Do you guys have any problem with your 4-1 header as far as scraping?

I really wanted to get the JDM 2.5" COLLECTOR header because that is where I will see the most power gains.

I might have to sacrifice for the 4-2-1 one piece header...

can anyone help hear?

thanks



Modified by 93Civic_hb at 2:08 PM 3/20/2004

93Civic_hb

ANYONE??

I need to find out what header to buy soon, my swap will be arriving shortly.

HNDAPWR

As far as I know, for NA applications, a "Tri-Y" or 4-2-1 header is your best bet for overall power gains. For forced induction, a 4-1 with short, fat primaries and longer secondaries and larger collector is the way to go.

miahmouse

if you look at the 4-1's that are for sale more than half are bent. if your car is lowered yes there will definitely be clearance issues. the 4-2-1's tend to be better in the midrange but loose a little up top. the 4-1's are good up top but lose midrange and scrape more.

if you were boosting (unless you were supercharging), you probably wouldn't be asking this question....

bad93ex

Go with a 4-1 because when you are racing you are in the area of RPMs where the header helps out.

93Civic_hb

thanks HNDAPWR and miahmouse, I believe a 4-2-1 would be best for me. I am an all motor guy, and your are right if I was boosting it I wouldn't be asking this question. If you have any more feedback please feel free...

zensoku207

Its true. I bought a DC 4-1 because they offer more power in the top end than the 4-2-1. With the car lowered, it scraped a lot, and is now bent, probably causing a loss in HP.

But, If all 4-1's are set up like this, they will all yield the same result, especially in places where the roads have hills and frost heaves.

Those are the ones that produce the most power tho....Guess it's just a matter of how low you go.

Jer

a good 4-2-1 like the comptech race header is what id go with. nice mid range and upper rpm gains.

remember that usable power under the curve is always better than just a higher peak number.

93Civic_hb

yea I'm definately getTing a 4-2-1 now, thanks a lot for your help guys. Hey GERM, where is the best place to get a comptech header?

teknoracing

I would go with the 4-2-1 to get better mid range horsepower. As ive noticed, many hondas have really good top end power all be it peaky horsepower but its there none the less. Driving my nissan and my honda, I noticed my SR20 engine can take B series hondas off the line (most), and get caught up with in the higher bands. Try to get more horsepower and torque in the "useable" powerband, youre not always going to be redlining it on the street every chance you get are you??

If youre going to be doing mainly street driving and weekend racing, go with the 4-2-1 headers. If its full race or mostly racing, get the 4-1.

GReddy SI

iTrader: (1)

i have a eg b16a2 with the jdm dc header 4-1 2.5collector
if your dropped its going to get dented like mines
I dont know if i lost power. i ran with the header at the track and got
a best of 14.11@97mph , but i was thinking the gsr block is a bit taller
so u might not scape it anyone know this true?
another question just to know
i thought the jdm dc header 4-1 collector only fits on b16's and b18c5's?
i could be wrong

aaaabbbb

HOLY ****!!! that looks like my headers after i ran over a log... my bet is that u are losing power from that dent.. i remember when mines was dented it didn't go no where.. it sounded like a harley davison, u should get that fixed or replace the headers.

JDM-97CX

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by HNDAPWR &raquo;</TD></TR><TR><TD CLASS="quote">For forced induction, a 4-1 with short, fat primaries and longer secondaries and larger collector is the way to go.</TD></TR></TABLE>


Wow.

Jaysun

my buddy has a 4-2-1 DC on his gizer, its a def. clearance issue all the time.

EJAYSICKS

This was my friends si. It doesnt look so low in this picture but it had Dc 4-1 header and it scaped very often. I dont know if the size of the speed bumps here in georgia are different sizes then everyone elses but. It does scrape a lot. BTW: GREAT SOUND!

miahmouse

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JDM-97CX &raquo;</TD></TR><TR><TD CLASS="quote">


Wow.</TD></TR></TABLE>
my sentiments exactly...

Draco

Remember, with at 2 piece 4-2-1 header, you won't have to unbolt and remove the entire header to drop the oilpan.

Debaser

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Draco &raquo;</TD></TR><TR><TD CLASS="quote">Remember, with at 2 piece 4-2-1 header, you won't have to unbolt and remove the entire header to drop the oilpan.</TD></TR></TABLE>

Now there's something I never even thought of. Thanks.

mugendelsol

i have the dc sport jdm 4 into1 on my b16 in my delsol, i have to be careful going over speed bumps like avoiding them. my car is lowered with neuspeed race springs and koni yellows with stock 14s

yungfab

what do you guys think about the fujitsubo 4-2-1 header?

93Civic_hb

Havn't took that into consideration. Never knew they made one...

zensoku207

What about headertech, anyone have clearance issues with those?

slammed00si

i have the 4-1 dc on my 2000 si. as long as you know how to drive a dropped car it shouldnt be a problem. mine has one scrape mark not even a dent and im slammed. just pay attention to your surroundings and you will be fine.

SwampThing

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by miahmouse &raquo;</TD></TR><TR><TD CLASS="quote">if you look at the 4-1's that are for sale more than half are bent. if your car is lowered yes there will definitely be clearance issues. the 4-2-1's tend to be better in the midrange but loose a little up top. the 4-1's are good up top but lose midrange and scrape more.

if you were boosting (unless you were supercharging), you probably wouldn't be asking this question....</TD></TR></TABLE> i notice you say super charging, which is what my plan is what would you recomend?

vtecludeh22

4-2-1 is the way to go