Recent content by Joseph Burgess

  1. Joseph Burgess

    Axle differences

    One question, your mechanic said your races were pitted qhen he checked the diff fluid level, unless he pulled the front pinion bearing seal and then bearing itself he couldnt see the races and same goes for the axle bearings , goes for all the races just pulling the rear cover alone wont give...
  2. Joseph Burgess

    Axle differences

    Oh and if you are looking for a donor vehicle a 98 -99 expedition with axle tag code S939A is identical to the S939J same ratio and both have the posi traction .
  3. Joseph Burgess

    Axle differences

    Your axle is same as mine, should have 12mm studs and yiur lug nuts should be 3/4, i got home today from work and pulled my rearend and swapped with the donor after changing the diff oil, once buttoned back up took for an spin and no more sound, now mind yiu the donor had more miles on it so im...
  4. Joseph Burgess

    Axle differences

    Yea mine has the 12mm studs , im hoping its just a yearly code change as it all looks the same will find out this weekend
  5. Joseph Burgess

    Axle differences

    Ok went and picked up my donor axle and diff at the salvage yard, my truck has the 9.75, 3.55 limited slip S939J the one i was given is identical except it is labeled a S939A what is the difference if any before i do the swap this weekend. I know from the ford site that the S939J is 99-00...
  6. Joseph Burgess

    Axle differences

    Havent located a suitable replacement yet for her. I can find plent of 3.73 rear ends at my local yard but they wont work with mine as i have a 3.55 front diff, also my truck was built in 99 and is an odd ball as the 3.55 was only put in the 99 and 2000 model with 12mm studs . Anyway still...
  7. Joseph Burgess

    Axle differences

    Well looks like im either gonna have to have it rebuilt or swap both front and rears to match, all i can locate is the 3.73 gear rear ends and that wont work to well with my front 3.55, if i can find a front 3.73 then id like to just swap both for the better ratio oh and yes i have a 2000 model...
  8. Joseph Burgess

    Axle differences

    Im thinking its in inner pinion bearing or ring and pinion gear, bad whirling sound at speed, if the axles are the same spline then swapping will be easy
  9. Joseph Burgess

    Axle differences

    Ok build date i was wrong on it was August, 99 axle code is H9
  10. Joseph Burgess

    Axle differences

    Good question i think if i remember correctly Dec 1999, but ill have to get back to you on that
  11. Joseph Burgess

    Axle differences

    Thats what im trying to find out honestly dont know, can i switch the studs only or do i need to switch the axles aswell
  12. Joseph Burgess

    Axle differences

    Ok , ive got a 2000 Expedition Eddie Bauer, 4x4 with the auto 4wd. Getting ready to replace my rear diff due to problems, was going to just sway the entire rear with another donor. Here is my problem i have a limited slip diff axle tag is S939 J with the 3.55 ratio ive noticed that in my search...
  13. Joseph Burgess

    Questions about Compatibility of putting a 2003 engine into a 1998

    The 2003 and up are different engines from the 97 to 02
  14. Joseph Burgess

    Main ac not cold but rear is

    Waiti g to hear a reply to this as mine does this from time to time but have found that if i turn both on ay same time my rear will blow cold faster than the front , and the front kinda plays catchup ive got about 42 psi on the low side currently
  15. Joseph Burgess

    Rock rails for the old girl.

    Ok what size tires and rims are u running and how much lift to clear them on the black Exp
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