October 17, 2007 - Bad news.
I'm not sure how this happened, but it's my fault. Way back when I obtained the differential out of a wrecked 2003, I assumed it was a Torsen limited slip. I'm not sure why exactly, but I jumped on this particular unit because it had the 4.3 rear end ratio I wanted. Well, now I know why I've been having so much trouble with wheelspin.
It's not a Torsen.
The car was a base model. I might have been fooled by the big brakes on it, something that was exclusive to the Torsen-equipped suspension upgrade until 2003 when it became standard. But I've been trying to maximize rear traction with an open diff! Argh. Of course, Flyin' Miata doesn't have any Torsens of any sort in hand right now, so if I want an LSD for the Nov 3rd track day I'm going to have to pull the Guru diff out of my Seven. This is a great diff and one I'd love to run, but I hate to handicap the little car to get it. I could run the track day with the open diff and wait for a Torsen to become available, or I could source a diff elsewhere. Decisions, decisions...
tags: drivetrain |
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