4-2-1 header vs. 4-1 header (need to know he differences)
07-01-2002, 06:20 AM
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Re: 4-2-1 header vs. 4-1 header (MetalKill)
well you know more about it than i do lol oh well if they hammer you gave me my answer thx
07-01-2002, 07:45 AM
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Re: 4-2-1 header vs. 4-1 header (sshaikh01)
Well.... the 4-1 doesnt always have to have the highest end HP. Companies are now making "Stepped" 4-2-1 headers (like Toda) that provide an increase throughout the entire powerband like the classic 4-2-1 header by using stepped tubing and keeping the primary/secondary's lengths long, while incorporating charecteristics of a 4-1 header (example: having the collector size large enough for peak horsepower gains equivalent to a 4-1) 
Just go with a hybrid-type 4-2-1 header yO
[Modified by ivanED9, 4:51 PM 7/1/2002]
Just go with a hybrid-type 4-2-1 header yO[Modified by ivanED9, 4:51 PM 7/1/2002]
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07-01-2002, 08:23 AM
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Re: 4-2-1 header vs. 4-1 header (92_GSRhatch)
4-1 = is good for more high end torque
4-2-1 = good for low end torque
4-2-1 = good for low end torque
can't wait to put mine on. still sitting in my closet awaiting testpipe and type one b-pipe
07-01-2002, 08:38 AM
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Re: 4-2-1 header vs. 4-1 header (EbboyPSi)
power aside, here's 2 other things to think about.
clearance: 4-1's have a much larger collector than a 4-2-1 and in turn, it hangs much lower. Pretty much everyone I know around here (NYC) who had a 4-1 has crushed the collector.
maintence: if you're removing the tranny, it's nice to be able to just remove the downpipe on a 4-2-1 instead of having to remove the entire header as you would with a 4-1. Cut's at least an hour off a clutch job.
clearance: 4-1's have a much larger collector than a 4-2-1 and in turn, it hangs much lower. Pretty much everyone I know around here (NYC) who had a 4-1 has crushed the collector.
maintence: if you're removing the tranny, it's nice to be able to just remove the downpipe on a 4-2-1 instead of having to remove the entire header as you would with a 4-1. Cut's at least an hour off a clutch job.
07-01-2002, 07:09 PM
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Re: 4-2-1 header vs. 4-1 header (MetalKill)
SOUND. From my experience with DC 4-2-1 and DC 4-1, the 4-1 brings out the raspiness or tinniness (are these even words? hehe) from my exhaust. My Tanabe RM went from mean and low to a weed wacker on steroids. The 4-2-1 isn't as bad.
As for the power characteristics I would agree with whatever has been said in the above replies.
As for the power characteristics I would agree with whatever has been said in the above replies.
07-02-2002, 06:46 AM
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Re: 4-2-1 header vs. 4-1 header (94CivicSi)
Cut's at least an hour off a clutch job.
07-02-2002, 09:16 AM
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Re: 4-2-1 header vs. 4-1 header (SuperStar19)
This is where I got mine
http://solar.innercite.com/comptech/header2.html
fortunately I didnt pay anywhere near that price!
http://solar.innercite.com/comptech/header2.html
fortunately I didnt pay anywhere near that price!
07-02-2002, 12:59 PM
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Re: 4-2-1 header vs. 4-1 header (RokketRide)
http://www.importbuilders.com bolt on section, more power then hype r headers
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