OBX RX8 Header
10-03-2005, 05:16 PM
#28
My Goodness My Guinness
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ok well when i had my focus i bought a obx header, and to be completely honest the quality was better than that of any other that were on the market. It was the only one that wouldn't crack or rust. i loved it and i had wrapped it and it never hurt it at all. but i have heard that some people have had problems with the flanges cracking on civics so who knows i say someone try it and let us know maybe if people jump all over this than RE, other companies will lower their prices
10-03-2005, 07:52 PM
#29
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Originally Posted by tuj
I have heard that wrapping the headers, while reducing underhood temps, significantly shortens the life of most headers. A well-placed heat-shield is nearly as effective.
10-03-2005, 08:28 PM
#30
Bummed, but bring on OU!
Well 304 is an austinetic alloy, so it is subject to Chloride pitting and stress corrosion (at exhaust temps). You could use chloride free wrap, but chloride pickup from wet roads soaking the wrap would be an issue. There are 2 types of stress corrosion, chloride and caustic (requires a high pH environment, so probably not an issue), and it requires a tensile stress on the material (which a header would have). A coating would be beneficial as it takes oxygen out of the equation and keeps contaminants off the metal's surface, thus minimizing both types of corrosion. The wrap by itself would accelerate corrosion as it absorbed more crap from the road. You'd probably be better off not wrapping at all than wrapping with no coating. Ceramic coating should run about $100-120(?) i think. High temp paint might work for a while, but that's some serious heat.
10-03-2005, 08:39 PM
#31
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Higher than 1500º?
http://cgi.ebay.com/ebaymotors/High-...spagenameZWDVW
I've seen FC (2nd gen rx7) guys use this with great success.
http://cgi.ebay.com/ebaymotors/High-...spagenameZWDVW
I've seen FC (2nd gen rx7) guys use this with great success.
10-04-2005, 12:29 PM
#34
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Yah... I said F it and decided to order one as well. Figured I'd give it a shot.
http://cgi.ebay.com/ebaymotors/ws/eB...BSAA%3AUS%3A11
http://cgi.ebay.com/ebaymotors/ws/eB...BSAA%3AUS%3A11
10-04-2005, 12:39 PM
#35
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I'd say they'll do just as good as the expensive ones. I'm really surprised they decided to make one for this car though. Oh well, I'm interested to see how it does eventhough I'm turbo'd. My buddy has an OBX header on his eclipse and it made good gains.
10-04-2005, 12:48 PM
#36
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Compared to other products out there that cost this much and give comparable power gains (from what we know), I'm surprised more people aren't buying them. Someone do it and tell us what you think.
10-04-2005, 02:06 PM
#40
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As someone has mentioned before, why is the WB02 sensor attached to just one pipe? Wouldn't that give an AFR reading of just one exhaust point rather than three?
10-04-2005, 03:12 PM
#42
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ONe thing that company has never done is dyno test. They have always made claims. The O2 sensor location is a bit interesting. If you've absolutely got to put it in only one pipe, at least put it in the pipe that is fed by both rotors.
10-04-2005, 06:00 PM
#45
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They probably could have placed it at the hub point if they curled those pipes a little more to give about 2 - 3 inches more at the hub point. That should be enough to place the WB02 sensor there. If not, place it at the #2 pipe.
10-04-2005, 07:55 PM
#46
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I haven't even taken a look yet at the stock exhaust manifold/heat shields and crap surrounding them. How much of an annoyance is it going to be when I put this on? I can only imagine with the way new cars are, I'm thinking it would be best to go from underneath but anyone with input?
I'll check it out more closely on my own some other time, just curious.
I'll check it out more closely on my own some other time, just curious.
10-04-2005, 07:58 PM
#47
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Originally Posted by Spyder_doo
By the looks of all the other brandnames that make a header they all have the same O2 location. Dont know why though...dont make too much sense imo
The feed one looks like the O2 bung is where the pipes connect, right before the flange, but it's hard to tell.
10-11-2005, 07:55 PM
#49
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I see that the RE-A header has the divider barrier in the middle pipe, but the OBX one does not have this divider tab......Does the Stock OEM exhaust manifold have this divider? Any performance difference. I suspect that some hot exhaust could escape from one rotor to the next without it.
10-11-2005, 08:13 PM
#50
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That divider only goes in about an inch or so and doesn't really do anything. Why it is there is a good question. There is a divider inside the center exhaust runner inside the block that keeps hot gasses from blasting the side of the opposite rotor.