rudypoochris Posted December 17, 2005 Share Posted December 17, 2005 I have been searching around recently concerning the swap of 280z stub axles into a 240z's strut. Basically I am lost in terminology. I understand that the stub axle is the short axle that fits in the strut and connects the 1/2 shaft to the wheels, but what is a companion flange? Is the companion flange simply the 4 bolt flat surface that the half shafts bolt onto on the strut side of the IRS?? If so, what are the short splined shafts that fit into the sides of the diff called that bolt to the half shafts? Sorry for all the newb questions. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted December 17, 2005 Share Posted December 17, 2005 You have correctly identified the stub axle and companion flange. The other part I call a stub axle as well or stub shaft, but you have to be sure to specify which one you're talking about because it can get confusing. Quote Link to comment Share on other sites More sharing options...
RB26powered74zcar Posted December 17, 2005 Share Posted December 17, 2005 For the diff side, I call them the diff stub shafts, and the stub axles for the wheel side. Once you get into the later diffs with CV's, it gets easier. Either the stub axles, for the wheel side, and the CV shaft for the diff side... Thats my termonolagy (sp?) Quote Link to comment Share on other sites More sharing options...
jaime240z Posted December 17, 2005 Share Posted December 17, 2005 Maybe a pic will help...? Stub axles are on top, companion flanges (adapters in this case) are on the bottom. Not oem pieces but it gets the point across. If you swap stub axles, make sure you keep the correct spacers that go with your housing. Quote Link to comment Share on other sites More sharing options...
Danno74Z Posted December 17, 2005 Share Posted December 17, 2005 jaime240z, Since you are using Mondern Motorsports axles do you have to use your old spacers (I believe there were three different sizes A,B,C) with this new set-up? Danno74Z Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted December 17, 2005 Author Share Posted December 17, 2005 Thanks for clarification. Okay so, If i were to swap in 280z stub axles (which should fit in a 240z rear strut perfectly, right?) I would also have to match the new stub axle to the correct companion flange, which would also be sourced from a 280z, not the 240z. The 240z and 280z have identical bolt patterns on the companion flange I assume, so the same diff's can be used, correct? So where the diff swaping gets tricky is acctually at the diff stub axles where the spline counts don't match up with the 280z u-joint 1/2 shafts, unless it is a 300zxt's 87-89 lsd non ss. Whew that was alot. I did search, but sorry I just need clarification piecing it all together. Thanks. Quote Link to comment Share on other sites More sharing options...
Ed260Z Posted December 17, 2005 Share Posted December 17, 2005 Check out both of these links. Great write up. http://alteredz.com/280ZCVHalfshaftConversion.htm http://alteredz.com/240ZCVHalfshaftConversion.htm This should answer all of your questions. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted December 17, 2005 Share Posted December 17, 2005 Thanks for clarification. Okay so, If i were to swap in 280z stub axles (which should fit in a 240z rear strut perfectly, right?) I would also have to match the new stub axle to the correct companion flange, which would also be sourced from a 280z, not the 240z. The 240z and 280z have identical bolt patterns on the companion flange I assume, so the same diff's can be used, correct? So where the diff swaping gets tricky is acctually at the diff stub axles where the spline counts don't match up with the 280z u-joint 1/2 shafts, unless it is a 300zxt's 87-89 lsd non ss. Whew that was alot. I did search, but sorry I just need clarification piecing it all together. Thanks. All of the inner splines are the same on any R200 except the VLSD. Any R200 except the VLSD will fit with no issues, and that includes the 87-89 CLSD. I was running halfshafts with the stub shafts from a 280Z R200 in my 87 ZXT LSD diff with no problems for years. Quote Link to comment Share on other sites More sharing options...
Ed260Z Posted December 17, 2005 Share Posted December 17, 2005 A big question you need to answer is just how much power do you want to run through the diff? That will help rule out some of the many choices you have. I plan on a 550 to 600 Hp to the wheels, so I want something stout. (R230 maybe?) Quote Link to comment Share on other sites More sharing options...
jaime240z Posted December 17, 2005 Share Posted December 17, 2005 jaime240z' date=' Since you are using Mondern Motorsports axles do you have to use your old spacers (I believe there were three different sizes A,B,C) with this new set-up? Danno74Z[/quote'] NO, the same spacers were used. This is because the spacers correspond to the housings, not the axles. Hope this helps. jaime Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted December 17, 2005 Author Share Posted December 17, 2005 Thanks for the replies and links. I am going to go this route on my 72' 240z: 280z Stub Axles -> 280z Companion flanges -> 280z 1/2 Shafts with non-grease U's (if i can find them) -> 280z Diff stub -> R200 CLSD from a 87 300zxt Whew intense. Quote Link to comment Share on other sites More sharing options...
johnc Posted December 17, 2005 Share Posted December 17, 2005 280z 1/2 Shafts A half-shaft is a half-shaft. Use whatever works with the diff you plan to install (stub axle or circlip). Quote Link to comment Share on other sites More sharing options...
Dp351zcar Posted December 17, 2005 Share Posted December 17, 2005 What is a CLSD. A new term for a clutch LSD a opposed to a VLSD? Quote Link to comment Share on other sites More sharing options...
JMortensen Posted December 17, 2005 Share Posted December 17, 2005 John is right. From 510 to 280ZX, the halfshafts are identical. CLSD = Clutch LSD Quote Link to comment Share on other sites More sharing options...
jaime240z Posted December 17, 2005 Share Posted December 17, 2005 CLSD = clutch style limited slip diff VLSD = viscous limited slip diff Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted December 17, 2005 Author Share Posted December 17, 2005 Ok, now I don't know what the different between stub axle and circlip... Quote Link to comment Share on other sites More sharing options...
Ed260Z Posted December 17, 2005 Share Posted December 17, 2005 Ok, now I don't know what the different between stub axle and circlip... The circlip goes on the diff stub to hold it in. Quote Link to comment Share on other sites More sharing options...
JMortensen Posted December 17, 2005 Share Posted December 17, 2005 The R200s all use circlips on the stub shafts or CV's. I think John was thinking of the R180s, some of which use a retaining bolt to hold the stub shaft in place IIRC. Quote Link to comment Share on other sites More sharing options...
rudypoochris Posted December 18, 2005 Author Share Posted December 18, 2005 Thanks jt and Ed260z. I thought the circlip was standard on all of the diffs. The circlip is accesable from inside the diff on the right and left sides or inside the carrier. Sorry if these questions seem rudimentary, I just ismply don't know that much about it. Maybe it is just me who doesn't know much about it, but if there are others maybe someone can post simply the facts into an FAQ so people might benefit. Quote Link to comment Share on other sites More sharing options...
Ed260Z Posted December 18, 2005 Share Posted December 18, 2005 You should be able to apply some pressure with a pry bar and pop the whole shaft out of the diff. Quote Link to comment Share on other sites More sharing options...
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