4-2-1 vs. 4-1 Header

[JMillerUA6]

That wasn't the question...................

 

[WhiteAccord]

4-1 Headers are for top end... 4-2-1 is for overall range(low mid and somewhat high)

There are 4-1 headers for the Accord anways... And they wouldnt make a difference. Welll at least for our motor.

 

[ryan s]

i think 4-1 gives u more high end power and and 4-2-1 gives u low end power..

you cant find a 4-1 headers for after market unless you have one custom done. but i believe RMF makes a 4-1 h22 headers though.

4-1 Headers are for top end... 4-2-1 is for overall range(low mid and somewhat high)

There are 4-1 headers for the Accord anways... And they wouldnt make a difference. Welll at least for our motor.

correct

wasnt there a 4-1 header by "kamikaze"? noooo idea if its still available.

also some oem "headers" are split in the middle to simulate a 4-2-1 design in the space of a 4-1 like the rsx-s to give you low-down torque and to heat the cat faster...

 

[Sketch o5]

i think 4-1 gives u more high end power and and 4-2-1 gives u low end power..

yup...pretty much. i think it just gives more power all around. nothing huge tho.

you cant find a 4-1 headers for after market unless you have one custom done.

nope, Kamikaze makes one....

http://www.importparts.com/shop/product_info.php?cPath=1000_1001&products_id=1813

 

[dreman]

kamikaze does have 4-1 header but the bastards went out of business so it will be tough to find one unless someone has a few left in stock. I've tried to contact them via phone and email phone and emails are cutoff.


http://www.kamikazeperformance.com/store/shop/index.html

 

[shavedaccord]

equal length is what you want if you can find them.

 

[Accord_V6_400m]

4to 1 is for high end, and 4-2-1 is for low end. Its greatly simplified of course but thats the basic jist of it.

Its comes down to a huge single pipe carrying off the gases and the fact that the runners converge completley earlier most of the time and as such have a more high end oriented helmholts resonance that asssits with exhaust scavenging at hgher rpms.

 

[BlkCurrantKord]

 

[JMillerUA6]

Thanks guys.

 

[F23Coupe]

I don't think the F23 rev's high enough to extract the high-end HP that a 4-1 header is optimized for, anyway.