Late NB LSD
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Late NB LSD
Since I had a core unit taken apart for inspection (we inspect failed differentials to find out why they failed), I thought I would take and share some pics for you guys. This is what a 03-05 LSD looks like. It is a 4.3:1 unit out of any so equipped 03-05 speed. If you look closely, you can see the "bar" similar to what early open diffs have. Of course, if you look a little more closely, you'll note the springs. This LSD works kind of like a reverse synchronizer. Really neat setup. The NC and RX8 use a similar LSD, just a bit bigger. The MSM uses a similar LSD. I'll get pics of RX8 or MSM one day if you guys want.
In case you're wondering, this one appears to have failed due to backlash not being set correctly. The gears were too tightly pushed together. Unfortunately for the owner of the car, there are no marks anywhere (on bolt heads or otherwise) to indicate that anyone other than Mazda has ever been inside it. So the cause of death is speculated to be improper assembly of the unit in Japan. Only took about 20k miles to toast it. IMO, this really shows why R&P installation is not a shade tree type job.
In case you're wondering, this one appears to have failed due to backlash not being set correctly. The gears were too tightly pushed together. Unfortunately for the owner of the car, there are no marks anywhere (on bolt heads or otherwise) to indicate that anyone other than Mazda has ever been inside it. So the cause of death is speculated to be improper assembly of the unit in Japan. Only took about 20k miles to toast it. IMO, this really shows why R&P installation is not a shade tree type job.
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The bits of cardboard and crap in there is due to shipping. It came to us in a brown box. I wouldn't expect a shop to stretch wrap anything, especially not a core unit.
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