DeLorean Posted January 22, 2011 Share Posted January 22, 2011 I have been reading and gathering parts for an R200 swap and I would love someones clarification, because I have confused the sh*t out of myself. I have a '73 240z, I hope to start an RB25 swap soon and I want to beef up the rear end (pretty sure my halfshafts are nearly cooked anyway). I have the following parts: 3.90 R200 280ZXT CV axles 280z mustache bar 280z companion flanges. I am planning on ordering the conversion package from Modern motorsports, but I have emailed them a dozen times and not had a single response. Am I missing anything aside from the adapter from MM? Do I need 280z stub axles in order to use the 280z companion flanges? Any clarification you guys can provide would be much appreciated, I really hate to post asking for this info, but I'm just not getting it haha... Thanks Quote Link to comment Share on other sites More sharing options...
Miles Posted January 22, 2011 Share Posted January 22, 2011 go here: http://forums.hybridz.org/index.php/topic/62367-anyone-heard-from-ross-lately/ Quote Link to comment Share on other sites More sharing options...
jhm Posted January 23, 2011 Share Posted January 23, 2011 Delorean- Sounds like you've got most of the big parts needed to do the swap. You may need a different pinion flange, depending on which R200 you've got. See this thread for clarification: "http://forums.hybridz.org/index.php/topic/75675-r180-to-r200-pinion-flange-question/page__p__720437__hl__%2Bpinion+%2Bflange+%2Bswap+%2Br180+%2Br200__fromsearch__1#entry720437". Don't know what you're currently using for forward differential mount, but it's pretty common that you have to flip the mount around in order to mate correctly with the R200 forward mounting bolts. Hope this helps. Good luck with the swap, and be sure to post your results...always helpful to hear what worked and what didn't work. r/John Quote Link to comment Share on other sites More sharing options...
DeLorean Posted January 23, 2011 Author Share Posted January 23, 2011 Thanks John, that's a huge help. I now remember reading about the front diff mount needing to be flipped, but I totally forgot about it. Now all I need to do is get ahold of Ross haha. Quote Link to comment Share on other sites More sharing options...
NewZed Posted January 23, 2011 Share Posted January 23, 2011 You might have seen this already - http://forums.hybridz.org/index.php/topic/62367-anyone-heard-from-ross-lately/page__pid__917516__st__100#entry917516 I think that there is an alternative, using the earlier half-shafts with u-joints. Maybe while you're waiting... Quote Link to comment Share on other sites More sharing options...
jhm Posted January 24, 2011 Share Posted January 24, 2011 Yep...you should be able to use the S30 half-shafts (if they're the 4-bolt style to mate up with your 280Z companion flanges). You may have some possible length issues, depending on if/how much you've lowered your suspension. Due to the extra width of the R200 (especially on driver-side), there's a risk of the half-shaft bottoming-out during suspension compression. May not be an issue, depending on your particular set-up and intended use. I found a ton of good info in the stickie at "http://forums.hybridz.org/index.php/topic/49194-differential-cv-lsd-hp-torque-r160-r180-r200-r230-diff-mount/". Good luck! I'm in similar situation as you (maybe 6 months behind)....currently in the process of gathering the necessary parts to do the swap. I'll be watching your swap with much interest!! Quote Link to comment Share on other sites More sharing options...
Neverdone Posted January 24, 2011 Share Posted January 24, 2011 You could also just make/have made an adaptor plate for your outer cv joints to your companion flanges. There are a few designs out there floating around. Wolf creek racing makes an adaptor for Porsche CV joints but you could use the same idea. A guy made some funky lookin steel ones that kinda look like a squashed spool with some holes drilled into it that you can find online if you google "240z companion flange CV adaptor" Or even just welding a plate that surrounds the companion flange and drilling the correct holes into it. If you notice, Ross offers that as well as his billet ones. If you're not gonna be running crazy insane torque with big ol tires I'd consider it. Quote Link to comment Share on other sites More sharing options...
DeLorean Posted January 25, 2011 Author Share Posted January 25, 2011 I like the wolf creek kit, but as I understand it the stub axles are still the weak link. The more and more I look at it, the techno toy rear end is seriously enticing... Quote Link to comment Share on other sites More sharing options...
Neverdone Posted January 25, 2011 Share Posted January 25, 2011 You're going to be running an RB25 yes? RB25 =/= V8 You'll be fine. But if you have the money and feel like never really having to worry about the rearend again, TTT's package will definitly be a good place to go unless you wanna just run a solid axle. Quote Link to comment Share on other sites More sharing options...
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