Disc bolts buggered

[edengreylag]

Rear disc has 2 stubborn mothers that did not come out.Heads are shot.I'm considering a bolt welded on top of the ruined head.Would this work .I think so ,but people keep preaching jd weld glue.Surely this glue is a poor substitute for the real thing????

[Mincehead]

I recommend your original thoughts on the solution.It`ll be MUCH stronger than any glue and the heat will help loosen the grip between oxidised steel and aluminium, helping in their removal.
Watch out though, be gentle with them, I have heard of threads self destructing in the wheel!

[wesleyjohn]

i've drilled the heads off before on a different bike, remove the disc, this hopefully relieves the pressure on the bolt and then undo with pliers, or add a bit of heat and try, (only do if you know what your doing as i've seen some really bads things done, with people using a bit of heat)

[Kayla]

There are a few ways to do it-

-Weld a bolt (or nut) on to the knackered bolt head

-Weld an Allen key onto the knackered head

-Hammer an oversize Torx bit into the knackered head and turn it out using a decent ratchet.

and hope the previous owner didn't use red loctite...

Good luck!

[adam]

A Cobalt tipped drill (which are very cheap if you shop around) will go through them like butter. You need to be careful but the thread will come out like a Helicoil.
I done this on a few of my Buells and it saves removing the head and spark eroding the snapped bolt(s) on the front engine mounts.

Hammering in Torx bits?

[Mincehead]

Already worn/disposable Torx bits of course eh Kayla?

[adam]

Already worn/disposable Torx bits of course eh Kayla?

Ah .....that's a bit more like it

[Kayla]

Already worn/disposable Torx bits of course eh Kayla?

The only thing Torx bits are good for is hammering into knackered Allen bolts!

Adam- my bf recently had the 'Buell-snapped-exhaust-stud-in-head' nightmare. £140 later and it's fixed (with a proper metric thread tapped in to the head)

[adam]

Some of the Buell bolts were too long for the hole and bottomed out. I always machine 20 thou off them. Buell did a 'secret' improvement on redesigning the boss that the bolt fits into. The heads have the same part No. and the MoFuCo deny there was any change