I got bought some new headers for my 98 xj,, old one started to crack

Anyways i just wanted to know if I had to remove anything in order to take it out and install the new one.


Any advice will be great.

 

you will have to take off the intake and undo all the injectors because the gasket is a one peice then unbolt the collector pipe and there might be a few other things to thats all i can remember though

 

post up what kind of headers you bought and the deal you got. I have a 99 and plan to do the same thing. Make a good guide for me

Best of luck to ya

 

you will need to remove all the intake hoses...
Throttle cabe/Kick down cable/cruise controll cable
I suggest removing the fuel lines at the quick connect fittings(you will need the fuel line tools) and leaving the fuel injectors in the intake....or else you will have to replace all the injector O-rings.
undo all the vaccum lines and the fuel rail line bolted on the intake.
Undo the belt and remove the 3 bolts holding the power steering pump to the intake.
then you will need to remove the 11 bolts/nuts. Once they come off the intake manifold will lift out then once you undo the 2 collector bolts the header will come out.
Job shouldnt take very long.......

 

I dont know what make it is,,, stainless steel headers i got on eBay for 200$,, comes with hardware and gaskets

 

BUMP!
There APN header, 409 SS

I was wondering if anyone knew any good write ups with pictures on taking off exhaust manifold to install new headers

 

http://www.ineedparts.com/index.php?...oduct_id=15343

Premium High Alloy 321 Stainless Steel Tubular Manifold

$130 + $20 for shipping

 

I already have the header,, its the exact same design but made out of 409 SS( i dont know if its better or not)

My question was i need to find a write up(preferably with pictures) to remove the intake manifold in order to change the header

 

Should be super easy. I have done those a million times. You can get pretty good instructions if you need them at alldatadiy.com. They give pretty good pics and instructions and it should guide you through the process.
Brendan

 

i searched through that alldatadiy.com site and didnt know where to start.


can you direct me to a link

 

Its not hard at all,!! For the time your wasting trying to find a write up you could have it off! Grab a wrench turn off the computer and have fun with it.

 

I have to second that. It is super easy.
Brendan

 

It's counter intuitive but the 300 series stainless has more nickle in the alloy than the 409.
409 is the standard used by the auto manufacturers and will rust eventually. It can't handle the acids in the exhaust.
the 300 series are used in food service and will not rust. most alloys are 308 or 312/16 You use a form of acid called pickling paste to remove the discoloring from the welding.
Rust is actually the original form of the iron used in steel.
No iron in 300 series Stainless steel so no rust.

The only problem I've found in 300 series stainless steel exhaust systems is the expense and the noise from stone hits and the cooling. Takes longer for this system to cool down.
Other than that they will last longer than the car.

 

what do you estimate for the longevity of 409SS,, should i powder coat it?

reason for buying a new header, OEM is cracked and rusting out,

I really dont want to do this another time,, money is tight right now so i purchased that

 

Thats real hard to tell. depends on too many variables like the makeup of the fuel you use, usage of vehicle, warm up and cool down cycles.
All gasolines are not the same. Even now with the mandated 15% ethanol here in Ontario, your exhaust will have more moisture in it which will react with the gases creating some pretty nasty liquid acids. Anything front of the cat should last longer than 6 years to 10 as it's considered part of the emission controls mandated by both our federal governments, which by law MUST last at least 5 years