Hi all, I know there have been discussions, but failed to find the truth in the end - understand the Testarossa used Lobro CV joints, same for outer/inner part of the axle, and matches the one used on Porsche 930. For the 512TR (and probably 512M as well) it seems to be different - the wheel side CV joint is different / that big "one piece" thing that includes the CV joint as inner part. The part diagram certainly doesn't help as the axle is displayed as one piece, and axle possible to order from Ferrari - but, as been discussed, why would one order the whole axle to repair a CV joint. Aside from economical reasons, does it make sense at all? Anyone any experience? My car is 1992 512TR bought with low mileage, but one of the driveshaft boots was devastated, and that has possibly been a reason for the CV joint failing eventually. Many thanks for help! Dalin
During my last engine out service on my 1994 512TR I had the half shafts inspected, greased, and rebooted. I had a heck of a time finding the right replacement boots. The inner and outer boots are different, so the info that the 930 boots will work is only 1/2 right. Superceded part numbers seemed to be the main reason for the confusion. Ricambi was very helpful as always, and I’d recommend giving them a call, as looking on the website doesn’t necessarily get you to the right part number for the boots (this might have changed since I was looking, but it was a common issue across most part suppliers). If you’d like full maintenance done on the half shafts, check out cvsource.com, and give Jon a call. Only affiliation with both companies is that of a happy customer. PM me if you’d like more info. Sent from my iPhone using FerrariChat.com mobile app
Dalin, As an update to my earlier note, here are the part numbers that I ended up using for the boots: Gearbox side - 70006021 Wheel side - 95860404 Thanks again to Dan at Ricambi for helping me figure out the boot puzzle.
Ferrari isn't alone in this. You typically can't buy an individual CV joint anymore for a modern Honda or a Subaru either -- you get the whole axle assembly (inner CV joint, axle, and outer CV joint). TR are the last of the "old school" design where the CV joints, wheel shaft, and wheel bearings are all separate pieces. In the more modern design (like 512TR), the outer portion of the outer CV joint goes thru the wheel bearing inner race, and those together function as the wheel shaft and hub (i.e., there is no separate wheel shaft piece). Page F4 in the 512TR WSM has a decent figure: Image Unavailable, Please Login Know that none of that helps with your dilemma of the F price for the axle assembly being the usual crazy, but the typical price for a non-F axle assembly is $50~$100 so not surprising that the auto industry has sort of standardized on just selling the complete axle assembly only.
Sounds reasonable. Was just trying to find more wasteful and cheaper option. Might need to go the way of buying the full assembly in the end. One wonders how lucky it is Ferrari still is able to supply them. Thanks a lot to all.
If you can't source a factory replacement axle assembly, give Jon a call at cvsource.com. He has been able to help me out with my 1975 BMW axles with NLA Lobro joints.
Took me some time to decide and sort out, but I ended up buying the whole axle. Ordered in UK as those webshops are very easy and friendly to use. Not so much for the customs stuff since Brexit Mounted on car now and drives finally since last month. I will still look to get the old axle repaired, might use the cvsource.com later for this if no suitable repair shop found in Europe. Thanks everyone for help!
