Re: 420 R8 drive shaft
Posted: Sat Dec 13, 2025 5:18 pm
Thanks everyone. In the end I found the cv joint off the shaft and the new snap ring quite bent. I think what’s happened is mechanic error (me). The new cv joint is a nice tight fit on the shaft and I think I didn’t drive it quite far enough on so the snap ring didn’t get into position. I’d tapped it with a hammer to check it was locked but the tight fit had convinced me it was locked on. Measured the depth the shaft needed to go in this time to be confident. Taken it for run and done some full lock set-offs - all is well.
Interestingly a friend brought round some Honda civic drive shafts - late 1990s vintage. Snap rings are 2mm diameter vs about 1.6 for the R8 so snap rings not interchangeable. I suspect, as suggested, a concerto shaft would have worked but I’m pleased to have got the original working and to work out what went wrong.
Also interestingly the new cv joint made a fairly coarse noise for about a mile before the noise abated - quiet after about 4 miles - despite packing with grease I’m assuming the cv joint was very tight and has now loosened with the noise. Wasn’t expecting that though. Will keep an eye on it. Or ear.
Interestingly a friend brought round some Honda civic drive shafts - late 1990s vintage. Snap rings are 2mm diameter vs about 1.6 for the R8 so snap rings not interchangeable. I suspect, as suggested, a concerto shaft would have worked but I’m pleased to have got the original working and to work out what went wrong.
Also interestingly the new cv joint made a fairly coarse noise for about a mile before the noise abated - quiet after about 4 miles - despite packing with grease I’m assuming the cv joint was very tight and has now loosened with the noise. Wasn’t expecting that though. Will keep an eye on it. Or ear.