Photos of split diff compared to open one Mazda is tyring to sub
http://www.msprotege.com/forum/showpost.php?p=2810882&postcount=56
http://www.msprotege.com/forum/showpost.php?p=2810882&postcount=56
Jenn said:For some reason I can see this ending up a class action suit. They are required to replace parts with equivalent functioning or better, not with whatever the heck they have in the warehouse. Otherwise, I can see them getting sued.
Focus said:Like I said, let's not jump to any conclusions is this has not been proven. All it is at this point is speculation from one shop. Here is what an open LSD looks like. Totally different than the what we are talking about, so how about everyone stops looking for reasons to b**** and complain. The MSP has it's share of problems, but I am sure everyone loves their car regardless...
http://www.msprotege.com/forum/showpost.php?p=2811193&postcount=62
tallrd said:I appreciate a "let's slow down here" approach, but I just conference-called with the mechanic who is working on my car, and Ken at Protege garage. The mechanic I took this to builds race cars and has installed many LSD's in various vehicles so he's not naive. He put the axle in to test after partcially installing it and it allowed 1 wheel spin.
Ken was then told by Mazda that there is some (my words talking here)--> magical mechanical piece inside this new diff that manages to go against physics and only grabs both wheels under a certain amount of torque.
How is that even mechanically possible?! Either it's an LSD or it's not, right? My mechanic agreed with this sentiment.
I'm assuming Ken will be letting us all know what's up, and I'm sure I will be getting what I orderd--the OEM LSD 2003 MSP diff welded and not this new open/closed diff enigma.
Focus said:The Torsen differential is a purely mechanical device; it has no electronics, clutches or viscous fluids.
The Torsen (from Torque Sensing) works as an open differential when the amount of torque going to each wheel is equal. As soon as one wheel starts to lose traction, the difference in torque causes the gears in the Torsen differential to bind together. The design of the gears in the differential determines the torque bias ratio. For instance, if a particular Torsen differential is designed with a 5:1 bias ratio, it is capable of applying up to five times more torque to the wheel that has good traction.
tallrd said:Like a Quaife is.
However, the "new" diff looks identical to the LSD they removed minus the interenal spring/clutch pack (or whatever you wish to call it).
My mechanic is familiar with both types of diffs and is perplexed how what we saw could possible be Torsen.
I'm taking the new diff back to him to quadruple check.
Captain KRM P5 said:I handed the new LSD to the master tech at the mazda dealer today and asked him to identify if it was or was not a limited slip differential. he had to look and play with it for several minutes before making the determination that it was indeed a limited slip, and he truly had a hard time making the determination. after pulling the service highlights manual and further inspection of the new diff, he came to the conclusion it is the Torsen style and very close if not identical to the one now being put in the RX-8.
which leaves us with the following LSDs for this car;
1) 2003 Tochigi Fuji - discontinued
2) 2003.5 Mazdaspeed Revised - discontinued
3) Revised Torsen Style, released 2006
that said, i was able to secure some of the last remaining (4) Mazdaspeed Revised for those that want them. If they all sell to members here, I'll consider a discount just to move them for Mazda. Two questions remain unanswered - why the dealer cannot force an order on the old stock despite it being there, and why the change was made to begin with.
Focus said:This new number is probably only an internal change. The 2003.5 Revised diff and the one from this new part number are one in the same. I am 99% sure of this.