TABrinn Posted December 10, 2008 Share Posted December 10, 2008 I've been looking for an R180 out of a Subaru WRX Sti to put into my '71 240Z. They are fairly reasonably priced and come with 3.9 gears and are LSD. I've searched here as well as the subi forums and the 510 forums but I can't seem to find a definitive answer if these can be modified to fit in the early 240Z's. Has anyone here sucessfully done the swap??? What all is involved to make this work? Details please! Quote Link to comment Share on other sites More sharing options...
JMortensen Posted December 10, 2008 Share Posted December 10, 2008 Search and you'll find someone who has finished the swap. It's not easy. Quote Link to comment Share on other sites More sharing options...
Nizzan Posted December 11, 2008 Share Posted December 11, 2008 I've been looking for an R180 out of a Subaru WRX Sti to put into my '71 240Z. They are fairly reasonably priced and come with 3.9 gears and are LSD. I've searched here as well as the subi forums and the 510 forums but I can't seem to find a definitive answer if these can be modified to fit in the early 240Z's. Has anyone here sucessfully done the swap??? What all is involved to make this work? Details please! This is what I did: http://forums.hybridz.org/showthread.php?t=117916 Hope this helps you out. And Jon is right when he says it wasn't easy. But my post pretty much covers it all. If you have any questions let me know. Mike. Quote Link to comment Share on other sites More sharing options...
cockerstar Posted December 11, 2008 Share Posted December 11, 2008 This is going to sound like a completely uneducated question, because it is, and I can already assume the answer, but is it feasible to swap the carrier form the subi diff into the datsun one? What's keeping it from swapping right over and not having to deal with all of the fabrication? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted December 11, 2008 Share Posted December 11, 2008 This is going to sound like a completely uneducated question, because it is, and I can already assume the answer, but is it feasible to swap the carrier form the subi diff into the datsun one? What's keeping it from swapping right over and not having to deal with all of the fabrication? It's in the thread he linked to. The output splines on the carrier are wrong, so you end up having to use the Subaru CVs. Quote Link to comment Share on other sites More sharing options...
cockerstar Posted December 11, 2008 Share Posted December 11, 2008 Wow, I don't know how I missed that detail. For some reason I jumped to the conclusion of him using the subi axles only because he used the entire subi diff. The carrier would require the same splines. DOH! Quote Link to comment Share on other sites More sharing options...
TABrinn Posted December 11, 2008 Author Share Posted December 11, 2008 Awesome link, Nizzan! Good description and great photos! I'm surprized there aren't a lot more people going this route. BTW, I searched for subaru not subi... silly me! Quote Link to comment Share on other sites More sharing options...
Administrators RTz Posted December 11, 2008 Administrators Share Posted December 11, 2008 BTW, I searched for subaru not subi... silly me! Fixed Quote Link to comment Share on other sites More sharing options...
johnc Posted December 11, 2008 Share Posted December 11, 2008 If someone wants to send me a Subaru STi 27 spline R180 diff and the CV shafts I'll draw up and have made side shafts that allow this diff to be bolted to the stock 240Z halfshafts. It may take a few months but you'll get your diff and CV shafts back along with a set of the new side axles. I would prefer the mechanical LSDs from the 2004 through 2006 models. Quote Link to comment Share on other sites More sharing options...
junglist Posted December 11, 2008 Share Posted December 11, 2008 If someone wants to send me a Subaru STi 27 spline R180 diff and the CV shafts I'll draw up and have made side shafts that allow this diff to be bolted to the stock 240Z halfshafts. It may take a few months but you'll get your diff and CV shafts back along with a set of the new side axles. I would prefer the mechanical LSDs from the 2004 through 2006 models. How many months is a few months? I have a friend that has an STi diff and shafts...but they are spares for his rally car and may need them at any time. Quote Link to comment Share on other sites More sharing options...
johnc Posted December 11, 2008 Share Posted December 11, 2008 Probably two or three months. Quote Link to comment Share on other sites More sharing options...
mrcheeze36 Posted December 12, 2008 Share Posted December 12, 2008 Hi John, I have a set you can borrow and I'm not too far away. Regards, Eric Quote Link to comment Share on other sites More sharing options...
Nizzan Posted December 12, 2008 Share Posted December 12, 2008 Awesome link, Nizzan! Good description and great photos! I'm surprized there aren't a lot more people going this route. BTW, I searched for subaru not subi... silly me! Thanks, hope it helps you out with your dilemma. Quote Link to comment Share on other sites More sharing options...
johnc Posted December 12, 2008 Share Posted December 12, 2008 I have a set you can borrow and I'm not too far away. Thanks for the offer. Steve over at Suby Specialties is sending me the parts. Quote Link to comment Share on other sites More sharing options...
TABrinn Posted December 14, 2008 Author Share Posted December 14, 2008 If someone wants to send me a Subaru STi 27 spline R180 diff and the CV shafts I'll draw up and have made side shafts that allow this diff to be bolted to the stock 240Z halfshafts. It may take a few months but you'll get your diff and CV shafts back along with a set of the new side axles. I would prefer the mechanical LSDs from the 2004 through 2006 models. Off the top of your head, how much would it run to have a set of these side shafts made? Would it be a new piece that you could fab from your drawings or would it be spliced together from the old side shafts and new cv's? Quote Link to comment Share on other sites More sharing options...
240zero Posted December 15, 2008 Share Posted December 15, 2008 I haven't done business with this company, but they might be able to help with the custom axleshafts. http://www.driveshaftshop.com/index.php Quote Link to comment Share on other sites More sharing options...
johnc Posted December 15, 2008 Share Posted December 15, 2008 Off the top of your head, how much would it run to have a set of these side shafts made? I'm not going to guess on the price and if I made them they would be new parts. My market is primarily road racers and any offset or imbalance from weld-together parts would be an issue at race speed. Quote Link to comment Share on other sites More sharing options...
Nizzan Posted December 15, 2008 Share Posted December 15, 2008 I haven't done business with this company, but they might be able to help with the custom axleshafts. http://www.driveshaftshop.com/index.php That's where I purchased my shorter STi axles. That's about as custom as they will go, concerning this topic. They don't make anything along the lines of what John is talking about, with the custom snap in Pieces. Speaking of which, Don't you already make custom snap in pieces for the later "K" r180's John? Quote Link to comment Share on other sites More sharing options...
TABrinn Posted December 18, 2008 Author Share Posted December 18, 2008 Well put me on the list, if your gauging interest! Quote Link to comment Share on other sites More sharing options...
mrcheeze36 Posted December 18, 2008 Share Posted December 18, 2008 Don't you already make custom snap in pieces for the later "K" r180's John? Hi John, The betamotorsports site states its for the 25 spline later "K" R180s (while the STi "K" R180's are 27 spline) Quote Link to comment Share on other sites More sharing options...
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