Nizzan Posted December 20, 2008 Share Posted December 20, 2008 Hi John, The betamotorsports site states its for the 25 spline later "K" R180s (while the STi "K" R180's are 27 spline) Yeah I realized that as well. That's why I ended up going the route that I did. With the shorter Sti axles. Both differentials are "K" type cases, but the Sti's assembly is obviously different. If John.C could make the custom snap in 27 spline stubs, that would be a good solution aswell. Quote Link to comment Share on other sites More sharing options...
Cobra_Tim Posted January 13, 2009 Share Posted January 13, 2009 Hey John... Any update on this? Quote Link to comment Share on other sites More sharing options...
johnc Posted January 13, 2009 Share Posted January 13, 2009 Not yet. I'm have a hard time finding just one 2004-2006 STi rear CV shaft. I can find the diffs everywhere but the CV shafts are elusive, unless I want to spend $462.64 for a new one from Subaru. Quote Link to comment Share on other sites More sharing options...
mrcheeze36 Posted January 13, 2009 Share Posted January 13, 2009 Not yet. I'm have a hard time finding just one 2004-2006 STi rear CV shaft. I can find the diffs everywhere but the CV shafts are elusive, unless I want to spend $462.64 for a new one from Subaru. Do you need to borrow one? If so, you can borrow one of mine (I have a pair) Quote Link to comment Share on other sites More sharing options...
johnc Posted January 13, 2009 Share Posted January 13, 2009 Yes, i would gladly borrow one and return it once the measurements are all done. You can drop it by the shop anytime (call first to make sure I'm here) or I can come by and pick it up later this week. Quote Link to comment Share on other sites More sharing options...
TABrinn Posted April 6, 2009 Author Share Posted April 6, 2009 Hey JohnC, any updates? Quote Link to comment Share on other sites More sharing options...
johnc Posted April 6, 2009 Share Posted April 6, 2009 We're stuck on the spline profile. We can't seem to find the basic spline specs in any of the normal engineering references. Still looking though. Quote Link to comment Share on other sites More sharing options...
Racer Z Posted May 16, 2009 Share Posted May 16, 2009 I sent John Coffey an email the other day, to which he quickly replied, and I thank him for that. I explained to him that we have a WRX LSD (R180 clutch type) and we're thinking of modifying the stub-axle to fit the Subaru axle-shaft. I wanted to know what his thoughts, insights or experiences were here. Without wasting words, John said he thought that building a new output shaft to fit the stock Datsun axle-shaft would be a better approach. DING DING DING Now I'm not a machinist, but I do have access to a machine shop with a machine lathe and an end-mill. In my simplified yet overly complex mind, it seems pretty straight forward to get a Subaru axle and cut off the splined output shaft at the correct length, then weld a plate on the end. I don't have a TIG / MIG welder so I would have to send it out to be welded. Third step would be to chuck it up again and turn down the over-sized plate then used the end-mill to drill four holes in the new companion flange. Finally, send it out to be heat treated. Having the new output shaft balanced would probably be a good idea. Now, if I have done all this correctly, and there aren't any other surprises, the Subaru Differential should simply bolt into our 1973 240z using the stock drive-shaft and stock axle-shafts. In theory. In my head it is easy and painless. Quote Link to comment Share on other sites More sharing options...
johnc Posted May 18, 2009 Share Posted May 18, 2009 (edited) BTW... I'm making those side shafts. The drawings are done and I'm taking them to a machinist in a couple days. Then they go to the spline cutter, I weld the flange on the shaft, and then the whole thing gets heat treated. Edited May 18, 2009 by johnc Quote Link to comment Share on other sites More sharing options...
johnc Posted May 18, 2009 Share Posted May 18, 2009 Actually, the drawings just got sent to the machinist. Once I know more I'm going to open a thread in the Vendor forum and keep everyone updated. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted May 18, 2009 Share Posted May 18, 2009 So this will use stock U-jointed halfshafts then? Quote Link to comment Share on other sites More sharing options...
Cobra_Tim Posted May 18, 2009 Share Posted May 18, 2009 John, As soon as these are on your shelves Ill take a set or two. Any ballpark on pricing yet? Quote Link to comment Share on other sites More sharing options...
johnc Posted May 18, 2009 Share Posted May 18, 2009 (edited) So this will use stock U-jointed halfshafts then? Yes, the first iteration. Later I should be able to offer different flange options for CVs. I'm not going to post anymore in this thread. Look for a thread in the Vendor forum in the future. Edited May 18, 2009 by johnc Quote Link to comment Share on other sites More sharing options...
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