While tracking down a pesky vibration recently I took apart the half-shafts figuring that 50,000 miles or more had gone by since their last servicing. The driver side shaft did not extend or compress as smoothly or as far as the passenger side shaft. On dismantling, I discovered that a couple of bearings and spacers had migrated to the other side of the "fence" at the differential side and the fence was itself wandering along the shaft. In short, not good.

My question is quite simple: Can I use the half-shaft from a stock 260Z or a 280Z on my stock 1972 240Z? I have the R-180 differential, it appears that at least some of the latter Z's have R-200s. I figured I could but then started researching and somewhere around a discussion of longnose vs. shortnose R-200s and Cardon vs. tripod shafts I sorta lost any idea of the answer.

Chris

I have stock 240Z half shafts on a R200 3.9 ratio diff so I figure the inner flange is the same. CZCC and HybridZCC'ers have put 280 stub axles into 240 struts so my guess is "yes".

BTW - my first regrease and reseal of my half shafts was at 300K miles. Only noted some very mild wear.

I believe they have been measured before by different members and they are all the same length. Basically any r180 halfshaft is the same

Steve, Lee.

Thanks. Sounds like it if looks the same, it is the same. May seem self-evident, but it's not always the case.

Chris