Yeah, unfortunately I'm leaning towards the obx that doesn't give any option. I don't really enjoy cutting and welding something new, but it looks like that female nipple on the obx will not work at all. I'm left only to either eliminate egr function or replace the nipple fitting with a female adapter.

 

Yes they will work on the 5.4L , I just explained this to you on the last page . I'll try again. Your not looking at it correctly. OBX's don't come with nipples - No headers do from what I've seen in the past. They come with "bungs" (threader ports into the headers) Usually 3 bungs per set; 2 O2 bungs and 1 EGR bung. 5.4l EGR bungs will accept in these header sets work perfectly - No cutting involved - Where are you getting this info from ? It's totally inaccurate. The factory nipple will thread into the headers - No problem unless you have a 4.6L ; Then you either order 4.6L headers or have to get a reducer nipple.

There is No option here, you don't need one. You either order 5.4L headers or 4.6L headers. That's the only option needed. If you have know choice and order 5.4L headers for a 4.6L , then you will have to make a EGR reducer and find one to buy. You don't chop up a new set of headers. I don't understand what lead you to believe that this has to be done - bad info.

 

Here's a clarification with the OBX headers (owners with them please correct me if I'm wrong), unlike pacesetter, gibson, etc... OBX long tubes have this welded male nipple on to the #7 runner??? Which means that the factory nipple/bung adapter does not have a place to be used???

 

That's Awesome! - Nope! Never seen that before. Well that's cool; That also looks like 3/4~16mm which means the 5.4L's EGR will bolt right up

Just leave the stock nipple in the stock manifolds, you won't need it.

To clarify and like I said - Don't freakin cut it off

Your EGR will thread right on - They made it easier for yuh that's all..I still have NO clue why you think you have to cut it off ? Oh well - DON'T!

I'm hoping you'll understand this time or just hang on, maybe someone can explain this better - in a way that you'll understand I guess.

 

I think the issue is he hasn't gotten the factory nipple seperated from the EGR tube...??? If you tuner will disable it, just cap the damn thing. 3/4" pipe cap from any hardware store. They are brass and VERY tight fitting, you'll have to beat it on there a few threads at a time, and backoff to get rid of the shavings. Took me about 20 min. with a wrench and a deadblow whammer tool. The threads are so close it's perfect and you know it's a tight seal. The cheesy hose caps that the "L" guys use are not long enough and fit like a Taco Bell drink lid.

Any secrets to getting that stud out of the pass. side head? The full length is still there, less the 6 mm tip that twisted off. Was thinking about flat spotting the end and trying the vice grips again, or cutting half of it off and threading on two nuts to jam together to try to unscrew it. Should have started with that before tearing the threads up.

 

Okay, here is a pic of my 1997 5.4l egr pipe (without the adapter fitting on the end), I hope this clarifies and gives you guys a better understanding that there are more than just 2 egr pipe configurations (don't mind the cut I made into the pipe)





Wow, nobody knows what I'm talkin' about....which makes pics worth a thousand words!!! It wasn't that I couldn't understand ya' but ya'll may have not known about the 3rd type of pipe! New info for ya!! I hope this will help you understand about the different types of egr pipes on 5.4l's now.

Now back to my original question, does anybody know what to do with this dilemma of mine? Do the 1999 5.4l pipes use the same egr valve, which is the egr valve that has a male nipple connection? If so, I may just try that?

 

That's jacked...does the flared pipe even fit past the edge of the threads there? I say cap it.

Speaking of capping the EGR. I found that EGR delete thread a while back, then read it again when you posted the link jbrew, and I noticed he removed more stuff (Lightning) than my 4.6 has. Of course you would lose the EGR valve and DPFE sensor, but I'm not positive what else.

Looking at his pic, I have the sensor on the far left, and the only other one connected to vacuum is a fuel vapor something or other that I don't believe is associated. What is this particular sensor?

Looks like I'll cap off 1 line running into the TB elbow, and remove the green one coming off the EGR valve all together, and that's that.

 

Holy $%^%@#$^ Your absolutely right ! I apologize turbosean. I was thinkin you hit your head and knocked a few marbles out of wack :o

That is exactly how mine was; Crap! Sorry dude. - I just never seen the manifold side of the EGR tube (That threaded nut dealy) in one piece; My stock one broke into two pieces at first, right below the top of that piece that threads in. I plum forgot - freakin duuhhhh.

My replacement was from a later model 5.4L and it came exactly like the the 4.6L's are - Except everything was 3/4 - IE ~ larger pipe and cap; all 3/4(16mm) - I used my own brass nipple, that didn't come with the new pipe.


That OBX picture you posted has me thinkin tho - That might be why some header manufacturers don't list headers for 97-98 models. I bet the 5.4 EGR set up changed in 99.

Sorry dude , you where right and I learned something - Looks like you screwed tho

Nah, all you need is a 3/4 coupling; thread it down right on the header EGR stub- cut back the difference in length where the tube is already cut. - Get everything sized up and then install a compression fitting w/brass faro's on the pipe to seal it

 

Ford defines that little solenoid this way - "EGR Vacuum Regulator (EVR)". You get to chuck that one too..

 

Woohoo, thanks. I figured the extra ones were for the blower somehow.

 

Maybe those other two sensors are for a blower

I don't have any of those on my 98 and don't know what they are. The one with the round top is EVR tho- It's sort of like the EVAP purge soloenoid; Round top that spins with a filter under it.

 

I have the same egr pipe on my 97 5.4L.
I have been look at OBX LT headers for a Lightning. It looks like the same headers with diff. mid pipes. I'm going to have the same egr pipe problem.
What to do, I dont want to do any cutting on the headers.
Will a egr pipe from a 99 fit?
Norm

 

I'd think the newer EGR tube would work, maybe with a little tweaking. You're going to need custom tuning anyway...maybe consider an EGR delete? The "L" header tubes are 1 3/4" whereas the non-L are 1 5/8". Since I have an NA 4.6 and don't dual pipes, I went with the non-L.

 

BTW, I should know something this evening on fitment!!!

 

...did you have one resonator with NO o2 boss/bungs? i have one with 2 and one with none, i put the one with 2 on the passenger side and went to put the one without any on the drivers side, was wondering how the hell they expect my o2 extenders to reach.