Carlisle and event related pictures are to be placed in the relevant section under 'Events'.
Won't swear to it but I've always understood "heat treated" is a process that tempers/hardens--strengthens--metal and doesn't refer to the temperature/environment the item will operate in.MerkXRTurbo wrote:My machinest wanted me to double check to make sure that none of the pieces within the differential are heat treated. They wouldn't be in my wildest imagination, due to the fact that they're all bathed in gear oil and shouldn't see more heat than any kind of metal can withstand, but just to comply with his request I thought I would get a second opinion. Anybody???
Lijewski: "Sum Ergo Drive-O. Mucho!
Alright, he wanted to make the spacers to the same standards as the rest of it, and I really don't think that's necessary. I'm gonna go with my gut and tell him just to make 'em outta whatever steel alloy he feels appropriate.BeefFajitas wrote:I would bet the spider gears and pinion shaft are.
Question is, anybody know what size the ring gear bolts are? I need thread pitch, length, and diameter please!
I bolted 'em both on, and had the carrier in the case and it fit like a glove, except for the fact that the pinion gear sticks quite a bit past the ring gear and rubs a slight amount on the carrier. We are removing some material from the end of the pinion gear with a milling machine and rebalancing it to solve this problem. It should hopefully be together with pics this evening.
$10 LSD!!! Beat that!
There were a few obstacles to overcome, to properly get the carrier into the XR's case (besides the grinding of the case just to get the damn thing in there, as we are all familiar with to some extent).
- The biggest problem I've run into was that this carrier appears to be designed for a larger pinion gear, which puts the ring gear too far away from the XR's small pinion. This presented a number of problems. 1st of all, the .550" spacer had to be machined to get the ring over to mate with the pinion, which was an easy solution. The other issue with this is that the ring gear landing (I guess that's what you call the part that you bolt the ring onto?) is much closer to the driver's side carrier bearing. Due to this, the ring gear bolts end up rubbing the case and the cover and clearance had to be made. Enough clearance was required in the cover that we ground all the way through, and I have a couple of small pieces of aluminum made up waiting to be welded on in place. This is actually very minor and probably sounds like a much bigger pain than it actually is.
- Next, as I stated before, the axle stubs had to be turned down about .002" in order to fit into the GM carrier. This was a process that took just a couple of minutes on the lathe.
- The overall height of the GM carrier is not as tall as the factory XR's carrier, thus both bearings will not reach the bearing carriers on either side of the case without a spacer underneath the removable bearing race. The spacer that was machined was .362" thick, although since the bearing carriers are adjustable, anyone duplicating this project would not be required to stay exactly at this thickness.
- The carrier is a little big, and the tip of the pinion rubs it just a tiny tiny bit. To solve this the carrier was turned down a few thousandths just on the portion that the pinion rubbed. This sounds scary, but is really a simple and quite safe process.
Like I said, it got completed around midnight last night, so I didn't have a chance to take any pics. For those who doubt that the axle splines are the same, you're just gonna have to take my word for it. They are 100% identical. If it was a better fit, it wouldn't fit at all! A friend should be tigging the aluminum to reseal the cover today, and when I can get it back I will take pics.
The backlash was set a .0055, and the bearing carriers have been locked in place to hopefully never move again. The only obstacle left is how I'm going to hold the axles in. There is no way that the factory clips are going to be able to be put back in there, so I'm going to attempt to put on some external snap rings or something like that. Stay tuned!
Okay, that makes sense. I couldn't figure out why you were needing to make such huge changes from what anyone else has done. Given the add'l work required, I can't see anyone bothering to go this route when the 3.23+ stuff is readily available at the same price as the 3.23 and under. Only way it would make sense is if the scenario was similar to yours - diff and machine work was free (or close to it).MerkXRTurbo wrote:I found out that my differing experience was all because the carrier is designed for 3.23 and down (numerically) ratios.
You can see the .550" ring gear spacer. The stripe in the middle of the carrier was where it had to be turned down in order to prevent the pinion from rubbing it. Underneath the right hand side bearing race is the .362" spacer to get it to fit the case!
There is no room to get clips onto the axles to keep 'em in, and Deathbypsi told me that he doesn't use any clips at all and he's had no problems, so I'm gonna give that a go!
Well the Eaton LSD is in and ooooohhhhhhh man what a Diff., yes it was a little harder expected but I work out all of the detail and the fit is great, as you all know I can not Mod anything that is a stock FORD part to make this fit, so it was some little things like shim wise to make it fit.
You will need a .150 ring gear shim
10 25 MM 100X10 ring gear bolts
.250 bearing race shim for the non ring gear side,
the Xr4ti bearing are a little smaller in thickness than the GM 7.5 so grind off the end of the Diff. where the bearings go to install the stock clips, the other thing about the bearings is you cannot install them before you put the LSD in the case, then you install the bearings, you also cannot install the ring gear intill you have put the LSD in the case, it was a little work but it works great now and looks great, I'm not sure about the springs in the Diff. right now because Eaton has three different springs for the lock up for this Diff. so I'll let you know how this works out.
Ben DSP XR4ti
This is the shims That I installed, no Pic's yet but I will building a spare.