does anyone know what it is? i just took my level 2 to ford and they replaced the differencial, well they put friction modifyer in... why would a torsen need that?? the part number they put in is 3l5z*4026*aa. i looked it up on a ford parts site and came up with "Differential assy, ranger, w/locking differential, 8.8" ring gear, w/fx4 off road pkg." the only other options are "Differential assy, ranger, w/locking differential, 8.8" ring gear, w/o fx4 off road pkg. " and "Differential assy, ranger, w/locking differential, 7.5" ring gear" why no open diff option? so im wondering if the tech was just an idiot.. lol and maybe since the first fx4 was basically a level 2 they just cept the parts as fx4 offroad package meaning the new level 2.. ??? since the level one is basically a regular 4x4.... i dunno

any help would be awsome


o and the reason they replaced it was because there was ALOT of slack in the rear end, when i would leave from a stop there was a noticable delay and then a clunk. took them three tryes to fix it, lol i told them what was wrong when i first brought it in too.. buit noooooooooooo!

JOSH

 

The clunk would have more to do with the ring and pinion set up then the Torsen. I dont' know the PN but I'm guessing the Torsen needs friction modifier. My Ford manual says add 4 oz's of friction modifier if equipped with FX4 package.

 

ya it was the lash, i dont know why they replaced the torsen. maybe to do with the old recall on the toren? who knows.

ya thanks i did some searches in google and found that others have said the same thing about the friction modifyer, its for noise or something
JOSH

 

Friction modifier is added to Ford's Traction-Lok LSD to prevent clutch chatter while turning. The gear type Torsen LSD does not require friction modifier.

 

All it needs is 75W-140 full synthetic gear oil, no friction modifiers needed. I just changed mine...Mobil 1 is #1.

 

Is the Torsen just a automatic locking diff? whats the difference vs a LSD?

 

No it is a gear driven limited slip.

 

I hate mine......it tends to not work that well when I need it to. All it's really good at is making TWO black marks on the hyway instead of one!

 

well so far i love mine, it almosts feels like electronic traction controll. i can feel it tranfering power and also its never let me peg leg it. i did some more reading and although it doesnt need the friction modifyer, ford recomendes it for gear noise.. weird

 

What is your source for that info?

 

damn i dont rember now, it may have been a tsb, and then someone read it in theier owners manual also.....

ok i found out one of the places, it was on torsens website for GM aplications. it was a GM tsb


??

JOSH

 

Dude, our Torsens dont require a friction modifier. Thats one of the benefits of a worm gear differential...I'll look up what you said about it though....

Took you long enough to get it looked at! Damn!

 

http://www.torsen.com/general/genera...0-%20Level%202

there you go. thats the torsen site. friction modifier was used in the rear ends of camaros.... search on and youll be able to identify the number on your diff...

 

All I have to say about the Torsen is it's a worthless piece of crap better suited as a paperweight.

 

^Mine works better in my truck then my desk. I'm guessing you've had problems.

 

jus swap in a spool. alot less problems!!!

except maybe chewing through a nice set of tires in no time at all.

 

Yeah, big problems with mine. It decided to do this at 35-40mph back in Nov.

 

NICE!i!i!i!

 

sweet.... first one ive heard that has exploded, nicly done.

and i have a spool in my mustang, no need for one in my DD!!

JOSH

 

Mine blew up too.....bad. Locked right wheel up going down the road. I want to remove it and get a air or electric locker. Anyone know how much $$ it would take?

 

arbs and auburns run between about 400-600 plus install. over the summer I am planning arb rear torsen front (if they finaly produce it) with 4.56 gears and 33s.

 

If that's a Torsen as in the pictures of that trashed differential... it was either defective or it was submerged in water and fluid was never Changed?? Or you are WAY hard on your differential??? Which I'd figure you'd break u joints before doing that kind of damage ??? Did it come stock from factory in your truck??? If so how many miles on it???