There is now a permanent, awesome, and affordable solution!
I just finally finished up running a group buy with MFactory, designing helical LSD's similar to the Quaife at a much more affordable price. For the record - I don't work for them.. I'm just really excited about these things, and hopefully you will be too. There was such a large response to the group buy (nearly 50 people) that they have decided to carry these LSD's on their website from now on:
http://www.teammfactory.com/products.php?category=Helical LSD&mod=MZ
The retail price is $669.95 plus shipping, and the special ring gear bolts needed are
included, unlike the Quaife. We also worked out a different design for the bolts, so no grinding to the shift gate will be required. It will be a 100% drop-in installation.
Testing has been done in both a road race car and a 10 second ford probe... so rest assured, this thing isn't going to let go on you. If you're still concerned, check out reviews of their products over at honda-tech.
Just an FYI for all of you guys
. Here are some pics:
One of the sample diffs the day it arrived at my place of work back in January.
One of the special bolts - M10 left-hand thread like a honda ring gear bolt, but shouldered to fit the ~11.2mm (going from memory here) hole in the g-series ring gear. The flange of the differential has threaded holes, so there are no nuts required.
Lots of questions were asked and answered in the original group buy thread:
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And the following discussion thread:
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However, if you have any questions about these things feel free to ask me.