A couple of notes,

Andreas (noted for his springs) has a pretty extensive test of cv boots here:

http://ig-syncro16.de/forum/index.php?name=ForumsPro&file=viewtopic&t=21168&postdays=0&postorder=asc&start=0

secondly, the German manual at least, explicitly shows both the outer and inner cv boots on the front axles to have the inner ends of the boot clamped to the axle shaft. But the manual does not show clamps on the inner part of boots on the rear axles.

alistair

On 2013-03-22, at 7:10 PM, Dennis Haynes wrote:

> This problem is not unique to you. There is still a lot of stuff out there
> of poor quality being reboxed in many different brands. One thing that helps
> is proper installation and packing of the grease. A properly packed joint
> will NOT have any grease in or on the boot. After install the boot needs to
> be vented so that it is not under vacuum or pressure.
> 
> Dennis
> 
> -----Original Message-----
> From: Vanagon Mailing List [mailto:vanagon@gerry.vanagon.com] On Behalf Of
> Craig Cowan
> Sent: Friday, March 22, 2013 9:31 AM
> To: vanagon@GERRY.VANAGON.COM
> Subject: Cv boots cracking
> 
> I've only driven my Syncro for a year. It took over a year toget it ready
> and I'm not sure at which point I rebuilt my rear half shafts. At best,
> they're only two years and about 10,000 miles old but I'm finding that
> several of the boots are already cracking significantly. These where Rhein
> boot kits purchased from ken willford.
> What could cause this aggressive decay and how can I prevent it?
> 
> -craig