Is there a performance difference between ceramic coated and stainless steel?
and about 4-2-1 and 4-1, what are advantages of each.
I bought a DC 4-2-1 ceramic coated.
let me know.
thanks

 

also,
will the DC 4-2-1 bolt up to my stock cat?

 

Go forth and read young man:
http://www.team-integra.net/sections...sp?ArticleID=2 http://www.team-integra.net/sections...p?ArticleID=50

When you are done, then come back and share your newfound knowledge.

Good luck,

A.

 

wow!
I read the whole thing! VEERY interesting!
Primary goal = get exhaust gas velocity high enough to suck in fresh air during cam overlap.
Factors:
diameter - > bigger diameter of piping = peak torque at higher rpms
smaller diameter = hit peak torque sooner
stepping the header will prevent reversion or "back-fire" of exhaust gases
length of primaries - > longer primaries = peak torque earlier, because increased gas velocity
short primaries = peak later
collector design - > smaller, longer = more midrange power
larger, shorter = high end

COOL!

 

there is a big difference in ceramic coated headers and stainless steel headers. first off ceramic coated headers are not as hard as stainless steel headers so there for when you bottom out your header (especially when you have a 4-1) it will bend easlity. second the ceramic coated header will flow better than the stainless steel header. i had ceramic headers dc 4-1 and had no problem with it other than the big dents on the header from bottoming out. stainless steel is mainly for show. stainless steel also turn colors after a couple of days of normal driving unless you polish the header every day after you drive. 4-2-1 will give you more mid end power and a 4-1 will get you more high end power.

 

If you THINK that a ceramic coated header flows better than a SS header then YOU need to read both of the above articles as well. You are grossly misinformed. I will NOT argue your points since it would be alot easier if you read those and started to understand.
I am Not flaming you but, with comments like those you will get flames in another forum like Tech or Type-R.

Please educate yourself and then come back with some more helpful points.

Good luck,

A.

 

exhaust gases cool down dramatically when leaving the combustion chamber.
some people use header wrap to increase the velocity of the gases.

dc sports bans this from their header because can damage the actual header.
and SS is only for show when its jet coated, it'll always turn to another color.
SS performs better.

 

Congrats TurbothisLS,

You are getting IT! Now share some of the info with the guy below you. That article is from a Mod over at SHO.com in the Integra forum. The guy who wrote tha article is one of the King Tech Gurus from there and the 4 other boards that he is on. I also used to have a 94 LS and did I/H/E with some knowledge years back but, even then I did not really understand exhaust gas velocity, piping diameter and the tuning that goes into a header.

I currently run a Spoon SS 4-2-1 with a carsound high-flow cat and my stock R's exhaust, "Wonder why it's not ceramic coated?" Oh and BTW ALL of the BEST headers are SS! They are formed from SS and TIG welded. I did ALOT of studying on header dynamics and made an educated decision when I purchased it. Back then I did Not have the information readily available in the great header test. But, I made a very good choice and am happy with it.

GoTo for the results of the test: http://www.automotiveperformanceengi...om/header.html

Glad to have helped and now lets start the real header conversation. After you reading and starting to understand those articles you have already begun to eclipse most of the members knowledge of header dynamics and design here in this forum.

Good luck,

A.


[Modified by 1GreyTeg, 5:53 AM 3/21/2002]


[Modified by 1GreyTeg, 5:54 AM 3/21/2002]

 

Thanks! The article was not only informative but surprisingly interesting as well. Since I have a LS, which I want to have a quick 0-60, I have decided on 4-2-1 design, w/ longer primaries and smaller diameter tubing. This should make my car hit max torque earlier during a pull through the rpm range. I have already gotten the DC ceramic 4-2-1 off of ebay for cheap though. I might have to resell it and try for a ss. I am currently running a ITR header. Good improvements over stock LS, but design is still quite a bit conservative. Thanks for all your help.

 

that's a great article.