How To: 2.0 Header Installation

did i break this bolt? When i was trying to undo it, i heard a loud SNAP! then it came off. and where the yellow arrow is, was it just that nut suppose to come off? or the whole thing you see here?
thanks
 

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well, i think im going to go with obx now, but im deciding on what i should do next. header or wheels. i will need new tires within 2 months. i think im going to go with the non-fouler. i'll post pics when i decide to get it and have it on.
 
323CiP5 said:
did i break this bolt? When i was trying to undo it, i heard a loud SNAP! then it came off. and where the yellow arrow is, was it just that nut suppose to come off? or the whole thing you see here?
thanks

NO! It is perfectly fine! Trust me, I have had more problems with that bolt than anyone. I know that bolt like the back of my hand. Speaking of which, I still need to get my second bolt from Mazda. Only running on 1 now :D. Anyway, no its not broken, under the spring (looking at the pic) there should be a threaded end. Screw that back in to the cat section and have the spring what looks like a nut and washer on the other side of the header.
 
yeah its a pain in the ass to compress the spring while trying to screw the bolt back on though.
 
yea and I've swapped out my exhaust like 3 times now :p

PITA every time
 
"the resonator/air box taken off in step one does NOT need to be reinstalled. The car runs fine, sounds better IMO, without it."

is that to mean louder?
bah, i'll just go take it off now and find out!


installing the OBX header does or doesn't remove the cat? i see the old header is gone (duh), and a midpipe - but no pics of the cat in the how-to unless it IS that midpipe, but it's mentioned several times in the following pages

also, if i were to get that obx, could i also get a pre-soldered o2 mil eliminator and a bung with it? the fewer places i have to get parts from the better :)
 
keleko said:
installing the OBX header does or doesn't remove the cat? i see the old header is gone (duh), and a midpipe - but no pics of the cat in the how-to unless it IS that midpipe, but it's mentioned several times in the following pages

also, if i were to get that obx, could i also get a pre-soldered o2 mil eliminator and a bung with it? the fewer places i have to get parts from the better :)

It DOES remove A cat. You have two cats. The first is the one removed. The second is where the OBX and most other headers bolt onto.
 
it does not. That's why I'd recommend getting exhaust hangers and reinforced/aftermarket motor mounts just to be on the safe side and keep the header/exhaust from moving too much.
 
I managed to get the other one off without taking out the whole stud. if the nut and washer come off only, it's so much easier to get back on.
I had to use an impact to get the other one on because i couldn't compress the spring.

so far after 30 km of driving, it sounds like i have an exhaust leak. not too sure where its coming from, i will have to check it out. also i get a little buzzing noise when i accelerate, any idea on what it might be?
 
there was also a bracket i think not mentioned in your DIY that should go with step 7. it holds the header to the block. 2 bolts, one to the header and one to the front of the block.

i was trying to pull the exhaust manifold off after i undid everything and i couldn't figure why it wasn't coming off, then i looked around and found that bracket. :p
 
headers installed today too

(evil) i draged with my friend in his camry v6 who usually pulls away from me easily... dun dun dun i was in front and took off maybe just a lil bit of a headstart but turns out he was flooring it and we were goin about the same

woa wait that bolt? its completely broken
i had to dremel mine off cuz i complete stripped that nut facing toward the headers so its connected with only 1 bolt (just went and bought a new nut washer and bolt)
but bolt it sucha b**** its like double sided basically, u broke it rite in the middle
 

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