hey guys i was wondering which header is better for my set up. i have a b18b1 with 404 cams and valvetrain kit and the regular bolton's. is there much differance.

4-2-1 or 4-1

thanks

 

everyone correct me if im wrong but a 4-2-1 will give you better mid range power and the 4-1 will give better top end?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Rhythmsnewsn &raquo;</TD></TR><TR><TD CLASS="quote">everyone correct me if im wrong but a 4-2-1 will give you better mid range power and the 4-1 will give better top end?</TD></TR></TABLE>
I believe that is correct

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SlammedDC2 &raquo;</TD></TR><TR><TD CLASS="quote">I believe that is correct</TD></TR></TABLE>

Si Senorita

 

does it matter if i uped the compression

 

Read this:

https://honda-tech.com/zerothread?id=1720703

What a disaster! A 4-2-1 design is much better for ground clearance.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Dogginator &raquo;</TD></TR><TR><TD CLASS="quote">Read this:

https://honda-tech.com/zerothread?id=1720703

What a disaster! A 4-2-1 design is much better for ground clearance.</TD></TR></TABLE>
That's not always true. I scrape/dent mine all the time. I don't really care right now, it's just a DC 4-2-1. I will be custom making a skid plate when I get my RMF

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SlammedDC2 &raquo;</TD></TR><TR><TD CLASS="quote">
That's not always true. I scrape/dent mine all the time. I don't really care right now, it's just a DC 4-2-1. I will be custom making a skid plate when I get my RMF</TD></TR></TABLE>

If you had a 4-1, you would have ripped it off when you just scaped your 4-2-1. In general, 4-1 headers are better for racing but the reduced ground clearance makes them somewhat impractical for the street.

 

since you upgraded head area, i recommand 4-1 header.

 

if u can get an early merge 4-1 header then you will not have ground clearence issues. i know kamikaze makes an early merge 4-1 header. by early merge i mean it goes from 4-1 on the way down the engine as opposed to 4-1 under the car. i have a dc sports 4-1 and i can say i have ground clearence issues with it. but my car is also lowered about 2 inches.