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Old 03-07-2008, 05:52 PM   #1
cywdrums
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Installing shorty header?

Hey all I am installing my MAC shorty header can anybody tell me what to expect or keep a heads up for the install or is it pretty much a straight swap no worries?

I have new hardware and gaskets ready to go so that is not an issue also I am swapping plugs with NGK platinums.

Thanks a heap, Christian


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Old 03-07-2008, 06:17 PM   #2
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Depends on mileage and the conditions the car has been in...

Biggest problem is going to be rusted bolts, I'd advise giving every bolt on the stock header as well as the three that attach the header to the cat a good spray with a penetrating lubricant like PB Blaster a day ahead of time. Some people will tell you to use a propane torch on the bolts, but I just drove my car after spraying it and aside from some smoke it worked just fine. Air tools are a plus but not necessary, if you don't have an impact gun you're definitely going to need a breaker bar to get the bolts started.

New hardware is preferred but not necessary, when I did my header New Edge sold a set of nuts, bolts and threaded studs to replace everything, but you could reuse the studs and buy replacements at a hardware store with the same thread pitch, being sure that the length is equal or slightly shorter. You should be able to reuse the stock gaskets, the paper ones that usually come with headers are junk.
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Old 03-08-2008, 03:50 PM   #3
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hope you are dropping the cat. it makes it a lot easier to get the stock header out.
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Old 03-08-2008, 10:27 PM   #4
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get a bendable shallow socket (i think it was 8mm or 10mm) but it was a PITA
it took me a hell of a long time with 3 ppl. maybe it was cause i did it in my driveway. but i whished at the time i never had started it, hell it was such a pain i was talking about trading the car in for the next few hrs. but i still own her so it was a temp thing
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Old 03-08-2008, 11:04 PM   #5
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i agree with zx32nr, its a PITA! it took about 3 hrs of lookin and toyin with it before i got in the groove. finally i found out where i could put my hands and snake my arm threw to get to the bottom bolts. i did mine with a box end wrench on the bottom bolts and a swivel socket and ratchet for the tops. alos like the other guy said ... i sprayed mine with pb blaster everyday for a week b4 i started and none of them gave me an ounce of trouble. it will be tricky getting it off the 3 cat bolts but its possible. just takes a lot of shakin, pushin, pullin and twistin. eventually youll find how it comes out.
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Old 03-10-2008, 12:20 PM   #6
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The only ones I ever have problems with is the 13mm studs and nuts, all the others are not too bad, a little wd40 did the job for mine.
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Old 03-10-2008, 12:51 PM   #7
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Sweet stuff guys, im planning on doing the same thing to mine except that im going to put in a hi flow cat with 2.5" flexpipe too. Gonna finally have 2.5" from header back. Itll be all ready for when the turbo project gets assembled.
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Old 03-10-2008, 03:52 PM   #8
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lol, yeah, like they said, it's a PITA to get to those bolts, it just a takes a little time, cussing, and beer
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Old 03-10-2008, 06:15 PM   #9
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ive been thinking about doing mine for months but from what i've read its a pain to get thee nuts off but oter then tat its not bad
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