Dismiss Notice



Register Today It's free! This box will disappear once registered!

Exhaust leaks questions

Discussion in 'Modified 1995-2001 Explorers' started by Scotts96sploder, June 1, 2019.

^^Searches ExplorerForum.com^^





  1. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
    I have cracks in both manifolds, at some point I’ll be replacing them with some cast manifolds if I can junk yard them up. I also have some leaks in the muffler somewhere behind the heat shielding.

    I’m feeling kind of lazy and ratty, I noticed there is a flange after the cats I could just unbolt everything downstream until I have money for a proper system.

    Question:
    Will there still be enough back pressure via the cats so the computer doesn’t lose its mind?

    image.jpg
     
  2. Support EF

    Join the Elite Explorers for $20

    Explorer Forum has probably saved you that much already, and will continue to save you money as you learn how to diagnose fix problems yourself and learn which modifications work without having to experiment on your own. Elite Explorer members see practically no ads, can add their own profile photo, upload photo attachments in all forums, and Media Gallery, create more private Conversations, and more. Join Today. Your support is greatly appreciated.



  3. 974X4BLACKSPORT

    974X4BLACKSPORT Active Member

    Joined:
    May 21, 2018
    Messages:
    763
    Likes Received:
    155
    Trophy Points:
    53
    Location:
    FL
    City, State:
    hudson
    Year, Model & Trim Level:
    BLACK 1997 SPORT 4 BY 4
    Unbolting the exhaust system after the cats. will only make it very loud and extreme dangerous due to exhaust gases entering cabin. Leave everything in place until you have the new parts to fix everything. Also, unbolting after the cats. lets hot exhaust exit directly next to the fuel tank, BAD IDEA!
     
  4. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
  5. Mbrooks420

    Mbrooks420 High Voltage. Elite Explorer EF Vendor

    Joined:
    February 2, 2002
    Messages:
    8,898
    Media:
    4
    Albums:
    1
    Likes Received:
    991
    Trophy Points:
    133
    Year, Model & Trim Level:
    1998 Mountaineer AWD
    It’s actually not very loud at all with no muffler. The cats have plenty of restriction.
     
    • Like Like x 1
  6. bertomax

    bertomax New Member

    Joined:
    September 17, 2012
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    1
    City, State:
    Albuquerque
    Year, Model & Trim Level:
    1998 ford explorer sport
    I was Thinking that would be a great idea if it wasn't real loud.
     
  7. Mbrooks420

    Mbrooks420 High Voltage. Elite Explorer EF Vendor

    Joined:
    February 2, 2002
    Messages:
    8,898
    Media:
    4
    Albums:
    1
    Likes Received:
    991
    Trophy Points:
    133
    Year, Model & Trim Level:
    1998 Mountaineer AWD
    There’s no real benefit. You won’t see any real performance gains.
     
  8. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
    So I got in there today just to mess around. Decided to see if the manifold bolts would budge. Every one I could get a wrench on easily came right out! I was really worried about that part.
    Looks like the ac compressor needs to come out to get to the last bolt on the driver side, other than that the cast manifold swap looks fairly easy. Anyone know where to find an EGR cap?
    My plan is to leave the first cats stock and delete everything from there back. Maybe a Chinese glass pack. I kinda wanted to dump is out the side but I don’t see a convenient place to do that.
     
  9. BruceExploder

    BruceExploder Active Member

    Joined:
    November 3, 2018
    Messages:
    211
    Likes Received:
    39
    Trophy Points:
    38
    City, State:
    Edmond OK
    Year, Model & Trim Level:
    1999 Eddie Bauer
    IMG_20190602_172734.jpg

    I am in the process of doing same thing.
     
  10. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
    Are you going to use those manifolds?
    Are you leaving the second cats in?
    So your dumping it straight down, basically in front of the axel ish area? I dig that, might do something similar.
    I’m looking for the cast manifolds from a 98, rock auto is sold out and summit is overpriced.
     
  11. BruceExploder

    BruceExploder Active Member

    Joined:
    November 3, 2018
    Messages:
    211
    Likes Received:
    39
    Trophy Points:
    38
    City, State:
    Edmond OK
    Year, Model & Trim Level:
    1999 Eddie Bauer
    Yes only cause i found them and the EGR brand new on a junkyard vehicle it literally still hard the ford tags on everything. I am going to get headers eventually so these are just a placeholder for the time being since my EGR tube has a huge crack.

    I am going to leave the cats and do everything from the flange back. that way i can weld up whatever off of the vehicle and make my own cat back and change it latter on just bolting it back up to the flange.

    local muffler shop was trying to charge almost 500$ to do that plus remove the rear cats so i was like whatever i can get a harbor frieght welder and do it cat back myself. muffler was 26$ some new pipe extentions may cost about 14$ then a welder 90$ will work out way cheaper for me.


    i played with different combinations of stuff just clamped down and it was leaking out so i am going to weld it and i did like the way it sounded dumped the best.
     
    • Like Like x 1
  12. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
    Did you get the harbour freight stick welder? I definitely have one of those. I’m probably stealing your idea, I found a dual in single out for the same price, reversible and all that. Less to weld.
    I just tried running with the cats open, it’s just a touch loud above 3k lol, but you can’t hear the leaks anymore!
    I might see if I can modify what I have for rite now while I’m waiting on parts
     
  13. BruceExploder

    BruceExploder Active Member

    Joined:
    November 3, 2018
    Messages:
    211
    Likes Received:
    39
    Trophy Points:
    38
    City, State:
    Edmond OK
    Year, Model & Trim Level:
    1999 Eddie Bauer
    can you link the dual in single out? im curious
     
  14. BruceExploder

    BruceExploder Active Member

    Joined:
    November 3, 2018
    Messages:
    211
    Likes Received:
    39
    Trophy Points:
    38
    City, State:
    Edmond OK
    Year, Model & Trim Level:
    1999 Eddie Bauer
    not stick im going to get a flux welder. not sure if stick is suited for exhaust work
     
  15. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
    I found it on the main website and then searched amazon.

    TOTALFLOW 42198 Straight Through Deep Tone Performance Muffler - 14" Body Length / 20" OAL - Oval 5" x 8"- 3" Center / 2.25" Dual"Reversible/Bi-Directional"
     
    • Like Like x 1
  16. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
    Where did you find the pipes from the flange to the muffler? And what are the sizes?

    I’ve been rolling around with just the cats and I really like it, but I’m gonna put a muffler in there just in case a cop is having a bad day.
     
  17. Scotts96sploder

    Scotts96sploder Active Member

    Joined:
    February 10, 2019
    Messages:
    126
    Likes Received:
    28
    Trophy Points:
    28
    City, State:
    Jacksonville FL
    Year, Model & Trim Level:
    96 Explorer 5.0 rwd
    So my father in law just told me that these are not cats.
    It was my understanding this had 4 cats and these are the secondary’s? Can anyone confirm? I feel like I’m taking crazy pills rite now lol
    Anyhoo I really like how it sounds open like this! I bought a coupling to practice welding with and all I have is 6013, so if I can make that hold pressure, I’ll get some 6010/11 and the parts to make the rest.
    Also I know I’m tap dancing around a big no no for this forum, so let’s just assume “I will NOT be cutting these out and replacing with straight pipe” and leaving the ones up front. Lol
    Any welders here want to give me some tips for stick welding exhaust that don’t involve not doing it?

    FB3A0690-7007-4A93-B7B4-7029D3F507C1.jpeg

    C7194425-5040-4A2B-9C35-4AC822F4CADD.jpeg
     
  18. CDW6212R

    CDW6212R Hauls the mail. Elite Explorer

    Joined:
    June 17, 2004
    Messages:
    19,408
    Media:
    5
    Albums:
    1
    Likes Received:
    1,074
    Trophy Points:
    143
    City, State:
    Knoxville, TN
    Year, Model & Trim Level:
    98 Limited AWD
    All four are cats, the rears are just redundant, and the rear O2 sensors also just double check that the front sensors are working properly. The only proper way to replace cats is when the others are malfunctioning or old and believed to be not working well. Having two is mandatory and proper, I will always install one per bank on my cars(but mostly for the sound reduction).
     
  19. BruceExploder

    BruceExploder Active Member

    Joined:
    November 3, 2018
    Messages:
    211
    Likes Received:
    39
    Trophy Points:
    38
    City, State:
    Edmond OK
    Year, Model & Trim Level:
    1999 Eddie Bauer
    Pipe size is 2.25. I used a 2.50 to 2.25 adapter off the flange to even it out then used all 2.25 stuff from there.
     

Share This Page







We Support Our Troops!