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Did you pick up the gasket from honda... I dont know if where the header bolts to the RT downpipe if you'll need that- but I'm thinking thats whats leaking.

 
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It's hard to explain, but the opening of the downpipe is fluted. Kinda like the end of a horn...
The bracket you see in the pic slides up and down...

[IMG][/IMG]


And the top of the downpipe meets the bottom of the header right here



there's no spot for a gasket that i can see, and it is just the thin metal rim from the downpipe opening touching the flat piece on the header you see there, and since it's fluted, its bigger than the actual opening (pipe diameter) The bracket bolts onto the header and kinda sandwiches them together.

Am I doing this wrong? I used everything they gave me. and it all fits well. Maybe i just need to get it welded or something.

 
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That doesnt look like its a genuine honda part... its really close, but the material just looks way different.

 
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You talking about the header right?

 
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Yeah, the header.

 
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Ok, I brought it to my favorite muffler shop and they put a gasket between the downpipe and header (which should have been included with the header or downpipe..oh well) and they found another leak at another junction and fixed that. Also it doesn't rattle at all now

I am so happy FINALLY!!










And here's a video...

 
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Yeah, I thought you were missing the gasket. It doesnt come with the header, its a separate part.

So... is the header non honda OEM part? It looks close, but different.

Glad to see you got that exhaust on, sounds pretty good. Whats it sound like when you stomp on it, or were you? Do some drive by's

 
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the exhaust sounds good. A lil too quite for me but very clean. I like.

 
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I got the header from majestic honda, so it's whatever they sell

Here's my drive by video
Its super quiet in the car, but it sounds alot louder outside

 
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It says the DX/LX downpipe is connected to the header with spring loaded bolts, yet my EX has that as well. Do I actually have a DX/LX? How can I tell I have an EX D17a2?

 
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Pop your hood, locate your motor, from that locate your block. Facing the exhaust side of your motor, your block will be stamped in the top left with the type of motor it is.

Sounds pretty good man!

 
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I looked, all i see is a block serial number engraved and a white sticker with a barcode. None of the numbers resemble d17a1 or 2.

 
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I'm gonna simplify it for you... does your sparkplug wire cover say vtec or honda? (Its the black plastic piece on top of your valve cover). If it says vtec its an ex.

 
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Hello All,

I know this is the "The ultimate DX/LX header/exhaust FAQ" thread, but I could not find the answer to this simple conundrum..

I have a 1998 Civic DX sedan (4dr) 1.6L

With brand new DX header and catalytic convertor in place. How can I avoid putting on a OEM exhaust which rot out in about 5 minutes? I like the sporty Catback systems because they are stainless steel and would be better in NY where the salt the roads all the time.

I need to keep costs down and keep looking at Ebay but do not want to get stung buying something that does not fit.

The question is can it be done? If not I'll just buy the tin crap they sell at autoparts stores.

Thanks for your help!
Greg

 
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www.vrsexhaust.com

You can pick up a 2.25" stainless tubing kit for like $150-175 bucks and then either you or a muffler shop can weld it up. Cheap, easy, quality. Can't beat that.

 
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That sounds like a good idea, would that need a muffler box and tip?

 
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Yes unless you want it to be illegally loud.

 
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I have a 1998 LX and I was looking to put an OBX header, cat, and cat back on her
If I read all this right I apparently will have to weld the cat to the OBX header
If I'm going to do this, which OBX cat should I buy?
OBX offers two

1. http://cgi.ebay.com/ebaymotors/OBX-H...5503QQtcZphoto

2. http://cgi.ebay.com/ebaymotors/OBX-H...8532QQtcZphoto

One uses the factory o2 sensor position and one doesn't
I'm assuming the cheaper one, the one that uses the factory o2 spot, is the one I need but I'm just checking
(I'm also assuming at 45 bucks that it is a test pipe and not a cat, but whatev. I don't live in California, so I think if I at least have the ILLUSION of a cat, I should be good)

thanks

 
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I have a 1998 LX and I was looking to put an OBX header, cat, and cat back on her
If I read all this right I apparently will have to weld the cat to the OBX header
If I'm going to do this, which OBX cat should I buy?
OBX offers two

1. http://cgi.ebay.com/ebaymotors/OBX-H...5503QQtcZphoto

2. http://cgi.ebay.com/ebaymotors/OBX-H...8532QQtcZphoto

One uses the factory o2 sensor position and one doesn't
I'm assuming the cheaper one, the one that uses the factory o2 spot, is the one I need but I'm just checking
(I'm also assuming at 45 bucks that it is a test pipe and not a cat, but whatev. I don't live in California, so I think if I at least have the ILLUSION of a cat, I should be good)

thanks

 
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Woah, sorry for the double post
I dunno wtf happened there

 
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hey triz will this work ex header, ex downpipe and evo2 exhaust system? Do I still need catalytic converter? And I was also wondering how much hp and tq it put out with that kind of set up?

Thanks

 
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8000whp. You should get it.

 
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Your going to want a cat, without it you'll smell your exhaust whenever you have your windows open... it gets really annoying actually, and your exhaust is much louder then you'll want it- you'll turn the wrong heads, and its illegal to run without one, so you'll have to figure something out when it comes to emissions times.

I dont trust ebay listings. There are two types of cat's- ones that are universal and need to be welded in, and others that are already in the pipe that will bolt up to your system. The later is easier, but if you got pipe skills and got a welder then either one is a good pick if you think you can do quality work.

I'm not famil with the 6th gens, let me get that out there now. The concepts are the same:

If you want to do a head back exhaust then order an ex header, and ex downpipe, and an ex catback. If you want to do an ex cat back then you'll need to have an ex header and down pipe. if you just want a muffler, then just pick up an axle back muffler and bolt it on, or have it welded, depending on the muffler- pick up the kind that bolt on instead of the kind you have to weld one- its just easier and you can convert back to stock without re welding.

The issue of the O2 sensors... stick with the LX ones and just buy extention cables, links are in the first post. If you pick up the EX ones, you'll have to cut the connectors and solder them together because you cant join too females or two males with eachother.

Hope that helps. *crosses fingers this only posts once the first time*

 
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Woah really LOL. Nah seriously I was just wondering.

 
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In reality probably 1 to 3 hp. Pretty impressive hunh. No bolt-on is gonna give you any significant power increase on your civic. Try just driving like a tool every now and then and pretend it's fast, that's what I do.

 
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Yeah, I most certainly don't have pipe skills, let alone many car skills.
I appreciate the help

OK, so I want to do a header back. So you say I should get an EX head, EX downpipe and EX catback. By that I'm assuming you mean OEM EX head, downpipe and catback. That sounds good, but would getting the OBX header, some kind of cat that I can have a muffler shop weld to it and the OBX catback work as well?

Would the OBX head/cat line up with the rest of the exhaust nicely I guess is my main concern

 
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Haha that's cool was just wondering!

 
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It looks like both the OBX cats are the bolt-in type

So I put the OBX head on, bolt the cat to it, get the o2 sensor extenders (they'res an o2 sensor before and after the cat, correct me if I'm wrong) and then figure something out to piece between the cat and the cat back and I'm golden....right?

*crosses fingers*

 
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Haha that's cool was just wondering!

 
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You keep saying "ex head" Your ex head and lx head and dx head all have the same bolt pattern, so you dont need to change the head to change the manifold that bolts to it. I think your also getting the parts mixed up a little- you cant weld a cat onto a header... well, I guess you could, but that would just be stupid and it would probably be an inch from the pavement so you couldnt run a cat back. Here is how the parts go:

Engine Head> header (exhaust manifold)> Downpipe with cat converter in it (this is one piece of pipe with flanges on either side and the cat in the center [if you cant get a hold of an OEM downpipe with cat, get the Random Tech pipe, OR get a test pipe and a universal weld-in cat], then your cat back exhaust system.