Probably the Nylocks. They don't lock well against impact. I'd try
self locking AN with a hard washer, or perhaps red locktite. No idea
why the rest of the stuff is working and these aren't.
On Oct 17, 2009, at 8:42 AM, Scott Janzen wrote:
> My GT 6, with a welded diff, has the halfshaft u-joints bolted to it
> with AN6 hardware. I was checking out various things under the car
> two events ago and noticed that all of the bolts/nyloc nuts were about
> 1/8-1/4 turn loose. I tightened them up, but after the next event
> they were about one flat loose again. There's no way to get a torque
> wrench at these, given the proximity to the diff and the u joint on
> the other end of the bolts, so I just give them a good yank with hand
> wrenches.
>
> Question - are these stretching, working loose (with nyloc), or are
> the AN washers, which I find to be fairly soft, compressing? I really
> lean on the wrenches, so I am amazed the nuts are loosening. I know
> the welded diff puts a lot of stress on the system, but none of the
> hardware on the outer u joints or the drive shaft, all of which have
> smaller hardware, is loosening, and the events I'm talking about are
> only hillclimbs - not a lot of driving time at all.
>
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