BMR Tech Tip: Check those axle-to-spindle retaining nuts!

[West TX GT]

Does anyone know the thread pitch of the axles? I bought some used 800 hp axles and I would like to clean up the threads a bit before installing them, but I haven't been able find out the correct size and pitch info.

Sponsored

 

[Cplennon17]

Not to hijack the thread, but I am replacing the hub and for the life of me I cannot get the axle out of the old hub.

I followed CJ Pony video and am just stuck on getting the axle out of the hub. Anyone provide any help would be much appreciated!

 

[moffetts]

Which side? I think it was my driver side that was kinda hard to remove, at least by myself. I had to pry on it at the diff and have someone pulling on the shaft from the outside. It popped out without too much fuss.

 

[Cplennon17]

Which side? I think it was my driver side that was kinda hard to remove, at least by myself. I had to pry on it at the diff and have someone pulling on the shaft from the outside. It popped out without too much fuss.

Yes it is the driver side. We'll see if my wife's new gym muscles can help then I guess lol.

If anyone else has any tips to remove the axle from the hub, I am all ears!

 

[Nutthong001]

I just recently have this problem shown up when I drive my car. There are some metal clicking noise (like draging soda can on the floor) going on when I put my car in gear and step on gas as well as when I let off the gas. (The noise only occurs only within a second of stepping on and letting off, while no noise going on while flooring)

I tried to do a few experiments as following...

1. Have a friend push the car forward to make the car moves without engaging the drivetrain.

Results is no unusual noise going on, only hear engine and exhaust noise. Nothing else heard.

2. Revving the car without engaging the gear.

Results is also no unusual noise going on, only hear engine and exhaust noise. Nothing else heard.

It seem like this annoying soda can clicking noise only happens when I engage the drivetrain and put/let off the engine load to the drivetrain.

I really need everyone here in this forum help me verifying the issue please!!! Big thanks in advance !!

 

[moffetts]

I don’t think any of us have been able to recreate the noise by pressing on the car. The weight shift when accelerating or stopping is more force than I can muster, that’s for sure.

 

[natepcbfl]

I just recently have this problem shown up when I drive my car. There are some metal clicking noise (like draging soda can on the floor) going on when I put my car in gear and step on gas as well as when I let off the gas. (The noise only occurs only within a second of stepping on and letting off, while no noise going on while flooring)

I tried to do a few experiments as following...

1. Have a friend push the car forward to make the car moves without engaging the drivetrain.

Results is no unusual noise going on, only hear engine and exhaust noise. Nothing else heard.

2. Revving the car without engaging the gear.

Results is also no unusual noise going on, only hear engine and exhaust noise. Nothing else heard.

It seem like this annoying soda can clicking noise only happens when I engage the drivetrain and put/let off the engine load to the drivetrain.

I really need everyone here in this forum help me verifying the issue please!!! Big thanks in advance !!

May have to turn the sound up but, like this?

 

[Scootsmcgreggor]

How is breaking one of these loose when torqued and red loctite’d as advised?

 

[moffetts]

A butane torch will melt the loctite and the nut will come off.

 

[JohnDoe]

Replacing everything fixed my creaking sound when shifting weight from front to rear and vice versa

 

[robwlf]

i just ordered 2 rear wheel bearings, and gt350 half shafts, figured while i'm doing the shafts ill replace both bearings. even though there's no wobble or anything when i checked the bearings im just going to replace them all in one shot . and leave that thrust washer out ,as some posts ive seen say it does nothing

 

[Cobra Jet]

Bringing this back to the top...

So being a Mustang Enthusiast for years and having owned a variety of platforms - I have many good sites bookmarked and belong to many forums as well. I’ve followed this thread profusely and have read through every single post to date.

Which brings me to wanting to ask (2) simple and valid questions:

1) Why is the rear axle nut torque spec for a 2003-04 Cobra (IRS rear with similar CV axles) stated as being “Axle shaft-to-hub retainer 240 lb-ft”?

2) The 03-04 Cobra axle nut is also a M24-2.0 thread pitch, but a 36mm hex. The original 2003-2004 Cobra axle nut part number was FOSZ-4B477-A (package of 2). The 03-04 rear axle nut was not a castle nut, but looked more liked a reinforced encased standard type nut with no discernible flat base. Those have since been obsolete and were revised/replaced with Ford Part # W707772-S441 (package of 2, also M24-2.0 and 36mm hex). The revised nuts do have a small base to them, but are also nylock nuts (nylon reinforced to improve and prevent the nut from backing off).

———

Since the 03-04 Cobra Ford axle nuts are M24-2.0, won’t Ford Part # W707772-S441 also work on the S550 axles? Everything I’ve read in this thread points to the S550 rear axle nuts also being a M24-2.0 thread pitch.

With the above being noted, if 03-04 Cobra owners have been successful with the nylock axle nuts and 240ft-lbs, won’t that also resolve the S550 issue? I’m asking because it seems even those who have torqued to 150ft-lbs on the currently available S550 axle nuts are still experiencing issues.

Thoughts?

 

[Scootsmcgreggor]

so my recently installed new axle nut torqued to 150ftlb + 1/8 turn, with red loctite backed off ~1/16 turn in the first month. Drivers side, interestingly passenger side is still fully torqued.

Can anyone here think of any reason why I should not try a second nut as a lock/jamb nut? There are plenty of threads left on the axle stud.

 

[Bbarfoot14]

How is everyone torquing there’s? Under load or as it’s jacked up in gear to prevent spinning?

 

[Scootsmcgreggor]

Screwdriver through real caliper into rotor vanes for me.

Sponsored