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croga001
10-02-2014, 06:31 PM
The rear in my car is starting to only spin one tire. My question to you guys would be is this something I could remedy myself? Is there a better alternative for the 8.8 rear end then going with the stock limited slip? Kinda sad when you hit it and only leave one mark. The mileage on the rear end is about 125k miles. I have a rear end from an 88 TC I could swap in that I know the limited slip is still working in but I would rather not rob that for parts and risk not putting it back together correctly.

croga001
10-03-2014, 09:19 AM
Hey Tom,

When you replace the clutches are there any special measurments or tools you need? Is there a link to purchase this with instructions? How much would you estimate a reputible shop would charge to rebuild the rear? Im fairly mechanically inclined, just not very good with electricity, so I would think about trying this myself if the directions are fairly easy to follow.

Thanks!

MobileBill23
10-03-2014, 10:50 AM
Hey Tom,

When you replace the clutches are there any special measurments or tools you need? Is there a link to purchase this with instructions? How much would you estimate a reputible shop would charge to rebuild the rear? Im fairly mechanically inclined, just not very good with electricity, so I would think about trying this myself if the directions are fairly easy to follow.

Thanks!

Not sure about Tom's method, but to swap out clutches I imagine he must be removing the differential anyway, so here's a write-up with a list of tools/equipment you'll need:

http://www.corral.net/tech/drivetrain/gears.html

I can't vouch for that procedure, but the list of items needed is pretty comprehensive. The more uncommon items were about halfway through the list - the calipers and travel dial indicator, and are probably the most important items you'll need/can't do properly without.

Good luck!

Aerocoupe
10-06-2014, 03:13 PM
Drain the rear end, remove the rear differential cover, remove the pinion shaft bolt (8mm wrench), remove the pinion shaft, slide one axle all the way in and remove c-clip, slide same axle back so that is clears the spider gears or remove completely, and repeat for the other axle. The steel plates and clutches which make up the limited slip or in Ford's case the Trac-Lok are behind the spider gears that the axles slide through. Typically there is enough room to add a steel plate and an extra clutch on each side which creates more clutch surface area which in turn creates more friction. The "Z" spring that Tom is referring to is what preloads the spider gears so getting the one for an F-150 creates a higher preload as the spring is much stiffer. This is good for the posi affect and you will need to use friction modifier additive even if the gear lube says is already has it as it will not be enough.

Do a search on You Tube and there are several good videos of guys rebuilding the Trac-Lok and its something almost anyone with the right tools can do in the garage with the rear end in the car.

This is about as cheap as you can find for just the kit:

http://www.latemodelrestoration.com/item/LRS-4700A/Mustang-Ford-Racing-88-rear-end-Traction-Lok-Clutch-Kit

Darren

Kitz Kat
10-08-2014, 03:19 AM
Heat the housing where the bolt go's in for the crossover pin, there known to snap off.

Aerocoupe
10-09-2014, 08:23 AM
I had one break off at the threads with a couple of threads still left on the pin. By some miracle I was able to use a pick and Liquid Wrench to get it out but it took about an hour and some cussing. I talked to the Ford tech and he said is it hit and miss on cars they work on and it seems like they have more issues with rear ends that have been into versus ones that were factory. One thing he told me is that they never reuse one of those bolts, they throw it away and install a new one. I have a couple in my tool box as I have taken that approach to heart and have never had a problem with one since.

I've got a couple of buddies that will reuse them and have not had any issues either so it could just be that the one time I had an issue someone over tightened the bolt.

Darren

88tbirdsport
10-09-2014, 09:44 PM
over the winter I had slid on snow and hit a guardrail. come to find out my trac-lok wasnt working, was only spinning one tire.

Well ended up my rearend was over full and just needed drained a bit and needed the anti slip additive as my brother didnt put it in when he changed it. fixed it right up.

custompunk
10-10-2014, 03:17 AM
If this is the 7.5 rear track lock don't remove the carrier unless you are gonna rebuild the entire rear end. They will not last without a backlash and shim. (I've ate up at least 6 rear carriers).

A hot wrench is your friend. Heat up the pin where the taper bolt retainer is before you try wrenching on those. They are one of the bigger issues. (The 3/8 or 8mm bolt) Don't force it they snap and round easy.

I've also just did a gear oil change on them with friction modifier and it's prolonged the original 30 year old clutches. It's like 7oz recommended for the 2 qts of gear oil. I recommend only using like 5 though, that stuff is strong and not to be used wrong. (lesson)

Good luck and good deals.

Boss351 T-Bird
10-10-2014, 06:05 PM
I've never had one break, but I use a 6-point box end wrench and a quick, light rap with a dead blow hammer (element of surprise attack). I think some of the ones that break are from the pin end being a micro-smidgen too long, then they bottom out and end up stress-fracturing under use..... I use a new cross-pin and grind a tad off of the pin end.