> The exception is the driveshaft flange bolts, where
> I've had trouble with even new Nylocs backing off.
I ran into this a lot where the exhaust passes nearby - more on
the stub axle flanges in the rear of the 4A and GT6 than at
the gearbox output or diff input.
The bolts in all these applications are "special" - they have an
unusual part number (not the typical HB series). My cars had
a mix of fasteners, so I replaced them all. The "special" bolts
look like normal grade 5, anyway, and the grip lengths aren't
quite right - part of the threaded portion bears on the flange.
There's a "high temperature" nyloc nut in the AN series (AN365), and
I used these, along with AN6 bolts of the correct grip length and a
suitable AN960 washer.
I haven't any of these nuts back off in several years of use; before,
I had to tighten them at every oil change (or sooner).
Best,
chris
_______________________________________________
This list supported in part by the Vintage Triumph Register
http://www.vtr.org
Triumphs mailing list
Triumphs@autox.team.net
http://autox.team.net/mailman/listinfo/triumphs
|