Just bought some new discs and pads for my 60s. I'm looking for any tips beyond haynes for fitting them correctly.

I read an earlier Alex G post mentioning to sand clean the the hubs prior to fitting. Also about turning the discs through 90 degrees if there's excessive 'run-out'. The pictorial guide I got with the discs mentions a tolerance of 0 - 2mm run-out.

The guide also shows a step where you spray something onto the surface of the discs where the mounting bolts go (ie. the non-braking surface) prior to mounting. I'm clueless as to what this could be? copper grease?

Clean the hub down where the back of the disc presses against. Wire brush is usually enough. Coat this surface with copper grease, and the bolts which hold the disc to the hub so they do not sieze on. When you offer the disc to the hub rotate it while pressing against the hub to get a even flush fit.

I think you should also spray the braking surfaces liberally with brake cleaner; they will often have a protective coating applied (oil?) to prevent them from rusting.

All of the above good advice aswell as plenty of copper grease on the guides this will prevent the brakes from sticking.
This is more common during the winter months when the grit and salt cover the assembly cause them to get a little seized.
Have a good look at how the whole unit is assemble first ,take a pic if you can as the correct re assembly of the guides is paramount.
They can actually go in the wrong way and work but not to the optimum performance.
Clean the calipers and check the condition of the seals, it is a good idea to flush the brake fluid through if you have not replaced for a while as you have to bleed the system afterwards anyway.
Pete

Thanks for the excellent advice!

Couple of questions -

-Peterg, what do you mean by the 'guides'?
-Also what sort of torque setting do you use for the disc to hub bolts?

bet to get a haynes to guide you on brake work.as for guides i assume he means the caliper sliders

I've got a Haynes, but they never go into too much detail.
Such as they make no mention of using copper grease at all.
Also Haynes doesn't give a torque setting for the disc to hub bolts.

Caliper sliders..guides.. are these what haynes are calling the caliper 'pistons', the round tubes that comes into contact with the back of the pads?

Guides are the metal wedges/slides that hold the calipers in place.
The pistons are the cylinders that are housed in the caliper body that get pushed out by hydraulic pressure to push the pads against the discs.
Pete

Hellcat clarified the things that I was going to mention (again) and everything else has been dealt with. I'd only add that it's not too important what torque the disc-to-hub bolts get done up to, since the wheelbolts ultimately hold the disc in place. I tend to use a 12mm ring spanner and give two gentle taps with a hammer.

You don't HAVE to use copper grease, but it helps. It keeps the sliders moving freely and it eliminates any squealing from the pads vibrating.

Cheers,
-Alex