Need some detailed help...

[Cali Muscle]

Ok so its my first time doing anything myself on my 1992 GT 5.0 and im going to need a little help...

I'm going to be installing my MAC Equal Length Shorty Headers, Mac H-Pipe, and MAC Catted Exhaust. I have the instructions that came in the box, but there not very clear and the pictures are blury ad black and white. Everything on my fox is still stock.


So i just need some one to step me through the process please. Please be specific and detailed as possible... its my first time
1) ... ?
2) ... ?
3) ... ?
etc, etc, etc...

Also can u guys let me know what tools u recommend using for this? have any advice on how i should do this?

I cant wait to hear it guys... Im pulling an all-nighter b/c i want to get this done my friday afternoon...

thanks (in advance) for the help. I know it will be much appreciated!

 

[BK_CAULEY]

its a fairly straight forward swap. just pull a part and replace it with a new one. not much to it.just get the car (if you dont have access to lift) far enough off the ground because the rear tails are a B**** to get over the axle if you dont plan on keeping them just saw them off, makes it much easier. and if your it was like mine it all bolted right back in just like the factory stuff came out. i didnt undo my old hangers and replace them with the supplied ones but other than that do as stated above. its probably a good idea to put the headers on first then work you way back thats what i did and it went pretty smooth.

 

[Cali Muscle]

cool thanks for the advice. im sure it will help out alot... any clue how many hours im looking at to get this done ?



if anyone else has any imput on this please post it =) the more the marrier.

 

[HISSIN50]

The time will totally depend upon how well or poorly the parts fit together and how much the old stuff fights you on the way out.

I'd start at the tips and remove parts, working forward towards the headers. Then for the install, start at the headers and work towards the rear of the car.

Soak all your fasteners (on the car now) in PB - the header to H studs seem to give people fits. Use GOOD header gaskets. Band clamps are cool if you have access to them.

Good luck.

 

[Chuckman]

welcome to the boards. this is mostly just an unbolt and replace type of thing. tools you should have are a socket set (there are several sizes through the exhuast system, 1/2, 5/8, 3/4 i think are the most prevalent, but there may be others), metric wrenches or a cresent wrench for the O2 sensors, a variety of ratchet extensions (long ones help in bolting the hpipe on and off of the headers), and you may want a sawzall to cutoff the old tailpipes. and maybe a friend or a jack to help with the h-pipe (the mac is three piece so its not as heavy as the one piece ones out there, but it can still get awkward to hold it while bolting it on). penetrating lube also comes in handy on rusty bolts.

to get the old stuff off, start at the connection between h-pipe and catback, remove the nuts from the balljoints, then go to the back of the car and slide the tailpipes off the rubber hangers. this is where the sawzall may come in handy, as getting the tails out from over the axle can be tricky.

move forward, and remove the O2 sensors from the the front part of the hpipe (if you dont know what these are, theyre the little things with two wires coming out of em). disconnect them from the wiring harness too so that theyre out of the way. while youre there, also disconnect the air hose between the two cats.

in the engine bay, unbolt the stocke headers from the engine, there are a couple brackets that also use the header studs, so move them out of the way. theres also 2 engine lift plates on opposite corners, you can leave them off and store them elsewhere. now you need to clean up the header mating surface so you can get a good seal, a wire brush works well here, put some rags or towels in the ports to keep rust and crap from falling in them. start the first and last bolt on each header, and slide the gasket in between before getting all the other bolts in. tighten em down, attach the front hpipe tubes, then the crossover, flowtubes/muff, the tailpipes using all the factory hangers. leave the connections loose untill its all lined up, that way things can still move around when you need them to. when its lined up to your satisfaction, tighten your connections, reinstall the O2 sensors, and attach the air line (i cheated here and used a bit off rubber hose to bridge the gap between hpipe and the factory line, ideally you wont have to). start the car, check for leaks, tighten anywhere that does, and youre good to go. make a check of the header seal after a couple days as these can come loose from heat cycling and vibration.

thats really all there is too it, its not all that hard cept for getting off some rusty fasteners, shouldnt take more than a few hours to do it all. hopefully that will help you out a bit.

 

[Cali Muscle]

The time will totally depend upon how well or poorly the parts fit together and how much the old stuff fights you on the way out.

I'd start at the tips and remove parts, working forward towards the headers. Then for the install, start at the headers and work towards the rear of the car.

Soak all your fasteners (on the car now) in PB - the header to H studs seem to give people fits. Use GOOD header gaskets. Band clamps are cool if you have access to them.

Good luck.

PB ? and thanks for ur imput. =)

 

[Cali Muscle]

chuckman -- Thank you so much for being very discriptive like that! thats just what i needed. i think u told me like 5 - 6 things that i had no clue about. I appreciate it alot!

you just saved me alot of stress! Im gunna print this out and have it by myside through the process!

 

[BK_CAULEY]

PB ? and thanks for ur imput. =)

PB BLASTER its a lubricant kinda like wd40 just soaks up grease and trash better. and in my opinion is better.

 

[C6AE]

Everything on my fox is still stock

I put some BBK equals on my '91 a couple years ago and the things I recall are rusted nuts on the H pipe flange to header connection on the stock stuff. Real tough spot to get into to cut them off too. Thanks air hammer
DO use good gaskets, I used some copper ones. I have a set of DR Gasket's that I was going to put in because I thought my copper ones were leaking, but it turned out to be my MAC offroad H pipe making noise. When I swapped my cats back for emission check, the noise went away...
The DS header will go on nicely, the PS... well, just be patient.
Once the headers are on the rest is super easy.

 

[HISSIN50]

In addition to what Keith said, PB Blaster loosens up stuck fasteners. Anytime I do undercarraige work, I soak all fasteners in it the night before and then once again before starting. If it saves a broken O2 sensor, it's worth it.

Chuck - nice write-up. I also had to use a 4" piece of hose on the stock air tube - it would not come apart for me, even though I really tried. Someone had crimped it during a previous R/R.