Rear diff cover/fluid change

[ctrlraven]

I'll be changing the over to the TA Performance diff cover soon. What is the best fluid to use? I have also the stud kit that is recommend with the new diff cover, is there anything special to do differently with the stud kit, any certain tightening pattern? I've never done it before but car has over 100k miles now and the diff. fluid was changed around 60k I believe which was about 1.5 yrs ago by the dealer.

[RF Overlord]

Motorcraft 75W-140 synthetic is what Ford includes in the axle TSB kit.

There's nothing special you have to do to install the T/A girdle/cover (I have one on The Blackbird). Same for the stud kit. A little thread sealer on the girdle adjusters would be prudent to avoid weeping.

[ctrlraven]

Does that have friction modifier in it?

[fastblackmerc]

I use Redline 70w140, I believe, get 4 quarts. No need for friction modifier. Use locktite on the studs when installing. Before you put the new cover on I'd remove the large bolts and put some teflon tape on them so they won't leak.

Torque Specs:

Bearing cap bolts - 77 ft lb.

Cover Bolts - 33 ft lb.

Stud girdle bolts - 5 in lb.

[RF Overlord]

Does that have friction modifier in it?No, you'll need one bottle of XL-3.

[Stranger in the Black Sedan]

I used 75-140 redline with a stock LSD and had a ton of chatter until I added a bottle of ford racing modifier. You might need it. There is nothing wrong with using 80-90 dino oil. I change my diff fluid so often that it wasn't worth throwing away $40 worth of fluid all the time. I get smoother LSD clutch action with the dino oil w/ the stock setup.

[252life]

What are the benefits of using a stud kit as opposed to use the screws that comes with the girdle?

[ROB502]

Royal Purple no ,modifier needed.....:burnout:

[ctrlraven]

What are the benefits of using a stud kit as opposed to use the screws that comes with the girdle?

Wes sells the kits.

8.8" Stud Kit recommended use with Girdle Cover Part #: INT07S http://www.innovativeinterceptors.com/images/spacer.gif

This kit provides studs for increased retention of the differential caps on 8.8'' Ford and Dana 60 axles. They were designed for use with the M-4033-G girdles but can be used with the stock covers
Stud kit M-4034-A recommended for 8.8" and Dana 60

Ford Motorsport Stud Kit for 8.8" Rear End
Qty: Price: $20.00

http://www.innovativeinterceptors.com/images/M4034A.jpeg

[Vortech347]

You don't need the studs. Nor do you need the girdles unless your pusing 650+tq to the rear wheels. The Ford 8.8 is like the one thing Ford did and set a standard. I have done NOTHING to the rear end of my fox (Other than axles) and neither have alot of the guys I race with that all run low 11's high 10's. Mine's had 1.6 60's at the track and 568ft-lbs to it before with nitrous. Now it see's around 500ft-lbs to the wheels anytime I take it out for a spin. Does anyone here even run slicks? I've mostly seen people with drag radials? The other reason for it is to help keep it tight for the "hit" of a 6000rpm clutch dump launch on slicks.

Spend the money else where. :) Unless its a part you just like to say you have and show your friends when the car is in the air? The 8.8 is one stout piece of hardware. If anything spend the money and get better axles and rebuild the clutch pack with an extra plate.

[fastblackmerc]

I'd spend the $20.00 and be done with it. Better to be safe than sorry.

[ctrlraven]

Exactly that's why I'm doing it now so won't have to worry about it later on if I somehow magically have twice the power I have now lol.

I'll be using Royal Purple diff fluid, is 75w140 the oil weight I need to use and how much of it will I need? I will have the larger capacity rear diff cover.

[ROB502]

get three and you will have some left

[Vortech347]

Go get some clear silcone line from home depot thats just fat enough to go in the dif hole and go over the tip of the bottle. It will make filling the diff MUCH easier and less messy. Wear clothes you care nothing about because once 1 drop of gear oil touches them they are ruined...

I'll be cracking open a diff in a Mach 1 tomorrow that chewed up the spider gears on a 6800rpm launch on 11.50 ET streets wends night. Most of the time if an 8.8 brakes its the spiders inside the carrier. They are always the weakest link.

[ctrlraven]

Thanks guys, good idea about the silicone tube line.

[Marauderjack]

I have used the clear tubing but it eventually slips off the snout and disaster ensues....Grrrrrr!!!!:mad2:

I bought a plunger pump that screws into the oil bottle and works perfectly!!:beer:

I think I got it at Wal-Mart in the boating/sporting goods dept......used to pump gear oil into lower units of outboards and I/O's since you fill them from the bottom.:cool:

Marauderjack:burnout:

[Vortech347]

Zip ties are your friend.... :)

[magindat]

I'm with FBM on the Redline. Mine runs soooooo quiet.

[Aren Jay]

would this not be a good time for 4.10's?

[ctrlraven]

I didn't buy the car to worry about the cost of gas lol. Gas has drop more than 50 cents around where I get it.

[rayjay]

I didn't buy the car to worry about the cost of gas lol. Gas has drop more than 50 cents around where I get it.

A .50 cent drop :eek: not here brother.

[fastblackmerc]

I have used the clear tubing but it eventually slips off the snout and disaster ensues....Grrrrrr!!!!:mad2:

I bought a plunger pump that screws into the oil bottle and works perfectly!!:beer:

I think I got it at Wal-Mart in the boating/sporting goods dept......used to pump gear oil into lower units of outboards and I/O's since you fill them from the bottom.:cool:

Marauderjack:burnout:

What Marauderjack said. You can also get a suction gun from a FLAPS near you.