Walker BTM Install Questions

Discussion in 'PowerStroke Diesel Excursions' started by NASCAR Mike, Aug 30, 2006.

  1. NASCAR Mike

    NASCAR Mike Full Access Member

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    Is the stock exhaust 3.5 inch or 4 inch diameter?

    Other than the muffler, what parts do I need to install the Walker muffler? Special clamps? Pipe extenders?

    Does the old muffler unbolt or do I have to cut it off?

    Thanks all....
     
  2. bartman

    bartman Full Access Member

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    It is 3.5".

    I believe that you will only need clamps.

    You will cut if off. You will need to make sure not to cut too much pipe in front of the muffler as that piece with the S-bend will need to fit the BTM and it will need to be rotated up 180*. The rotation is the most difficult part, IMO.

    Bart
     
  3. CHPMustang

    CHPMustang Senior Member

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    Mike the exhaust be 3.5" from the bottom of the downpipe to the exhaust tip.
    Nothing special needed for the installation.
    The stock muffler will need to be cut off with a Makita or cutting torch,don't think about a hacksaw-popcorn
    Unlike the SuperDuty trucks(sorry Bart) there's no S pipe to rotate on the Excursions as it's a cut and weld install.
    I had a local muffler shop install my BTM for $40 out the door including fast fabbed hangers.
    The OEM hangers that came on the stock muffler were cut off and installed on the BTM(not visible in Photo 2) at the rear of the BTM a couple hangers were fabbed up and welded on(in photo 1).
     
  4. bartman

    bartman Full Access Member

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    I'm sorry. I didn't mean to misinform. :sorry
     
  5. CHPMustang

    CHPMustang Senior Member

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    From my readings in past forums I was convinced the procedure was the same on the Excursions by rotating the S pipe till I got to Pronto and they said no thats not necessary Bill :nutkick: :roflmao so there's no need to apologize budda:sweet
     
  6. bartman

    bartman Full Access Member

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    :) :)
     
  7. Fire1

    Fire1 Certified Diesel Driver

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    Just FYI Pronto did not rotate my S-pipe on my Super Duty either. Been fine for many years now with my poor mans exhaust.
     
  8. bartman

    bartman Full Access Member

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    They didn't do mine either :( but it works.
     
  9. NASCAR Mike

    NASCAR Mike Full Access Member

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    JAN 2007 UPDATE

    I finally got my Walker BTM installed last week on my 05 X.

    Rotating the S pipe after the cat conv did not work for me. The muffler shop could not get the muffler to line up straight so they removed the S-pipe after the converter and installed a 10" piece of straight 3.5 inch pipe from the converter to the muffler. They clamped the new pipe to the converter and welded everything else.

    CHP Mustang you may not have had the s-bend in your pipe because you have the 7.3. The 6.0 definitely has a S bend after the cat.

    The new muffler sits perfectly horizontal.

    The truck is not really any more loud that stock but I did gain two benefits.

    1) The turbo whistle is much louder
    2) Mileage has increased about 1.5 MPG so far so I am at about 21MPG at 70MPH. Not bad for a 8000# truck!

    Best $120 bucks I ever spent!
     
    Last edited: Jan 9, 2007
  10. JohnBoyToo

    JohnBoyToo Full Access Member

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    21 MPG ?!?!? Wow wish I woulda got YOUR 05 EB Ex instead of mine ;)

    or maybe your Walker BTM instead of mine :)
     

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