quote Originally posted by Kohburn:I want to use the dif housing to design an LSD for the 4speed

Speaking of Muncie LSD, I just received the Engineered Performance LSD for my Muncie. With the weather getting cold, I will be getting back to overhauling my trans, and installing the diff. I will be sure to keep everyone updated. I will post pictures as soon as I get my digicam back.

Marty

quote Originally posted by RacerX11: Speaking of Muncie LSD, I just received the Engineered Performance LSD for my Muncie. With the weather getting cold, I will be getting back to overhauling my trans, and installing the diff. I will be sure to keep everyone updated. I will post pictures as soon as I get my digicam back. Marty

so they finally released it? from what i can tell form the low res pics it apears to be a phatomgrip style lsd

quote Originally posted by Kohburn: so they finally released it? from what i can tell form the low res pics it apears to be a phatomgrip style lsd

Mine was from the original batch of 4. I just received it last week.

It has a pre-load mechanism similar to the PG, but the key difference is the EP diff has clutches between the side gears and case. The clutches are the main friction point, whereas the PG relies on the metal-on-metal rubbing between the blocks and gears to apply friction.

Marty

quote Originally posted by RacerX11: It has a pre-load mechanism similar to the PG, but the key difference is the EP diff has clutches between the side gears and case. The clutches are the main friction point, whereas the PG relies on the metal-on-metal rubbing between the blocks and gears to apply friction.

Sounds promising. So how long before you have your digicam back and we get to see it?

Sorry for the delay...I have my digicam back finally, so here are the pics I promised of the Engineered Performance limited slip diff for the 4-spd Muncie.

Here is the diff:

The pre-load mechanism is similar to a Phantom GRip:

You can just barely see the sintered bronze friction discs sandwiched between the spider gears and the diff housing:

Marty

[This message has been edited by RacerX11 (edited 01-17-2006).]

woops

[This message has been edited by p8ntman442 (edited 01-16-2006).]

quote Originally posted by RacerX11: If anybody is still looking, there is an Ebay auction going right now for the Kent Moore J 26935 Manual Trans Axle Shim Selector for the 4-spd Muncie. It is a Buy-it-Now autcion for $19.99. The Ebay Item # is 4603636899.

Somehow none of my auto-searches managed to catch that. Thanks for the heads up!

Anyone using Marty's scanned manual get in to a 85 (3.65) tranny yet?

I have one bearing left to pull... the LH bearing on the output shaft. There seem to be a few differences between the manual and what I have on the bench however.

For one, 3^rd and 4^th gears appear to be a fused unit, instead of separate as the manual indicates.

3/4 highlighted in red: vs.

The LH end of the shaft also appears to have a mushroomed-out fitting of some sort pressed in to the end of it which overlaps the bearing. I assme that this fitting needs to be removed before the bearing may be pulled off the shaft. (see below)

edit: yes, that's the bearing in the photo above. I cut the cage & rollers off to gain better visibility of the space between the bearing and 4th gear.

Any insight appreciated...

[This message has been edited by dguy (edited 02-17-2006).]

Check out the bottom of this thread: https://www.fiero.nl/forum/Archives/Archive-000001/HTML/20050818-2-057565.html

The later transmisisons used the one-piece gears, retained by a screw-in cap. The ID of the cap has what appears to be a 12-point hex pattern. I tried to remove mine with both an allen wrench and Torx bit, but it had been torn up previously by someone else, so they just stripped it out worse. If you are lucky, yours will come out with the torx bit. Be careful, as the threads are left-hand. I ended up having to weld a piece of tubing to the cap to allow me to remove it...not exactly recommended if you need to re-use it

Marty

[This message has been edited by RacerX11 (edited 02-17-2006).]

I have several diff carriers. PM me kohburn and I will get you one.

Rick

My friend has a 84 ECONO 4speed for sale right now in michigan, pm me if anyone is interested.

Regarding new shims...

If all of your old shims are thicker than required for the new bearings, another alternative is to have a machine shop grind down the old shims to the desired thickness. This is the route I ended up taking after running an uninspiring gauntlet of local Chrysler dealers and transmission repair chains.

Do you still have access to the shims? If so, can you get me the ID and OD measurement? I was helping a friend track down shims for rebuilding a GM 10-bolt rearend, and we ended up buying shims from McMaster Carr. It didn't occur to me to use this on the Muncie shims until now.

Marty

quote Originally posted by RacerX11: Do you still have access to the shims? If so, can you get me the ID and OD measurement?

They're at the machine shop now, but I should have them back on Tuesday next week. Once I get them back I'll measure & post.

Input: 1.78" ID, 1.95" OD
Output: 2.30" ID, 2.53" OD
Diff: 2.18" ID, 2.45" OD