spindles - will these work, and other questions

LOL if it was my 70 or even my SX4 I might insist on the correct spindle part number and skip any spacing or milling.
But this 73 has already been modified a bit, ok, so more than a bit, so i'm only insisting that it be SAFE and the brakes work excellent. It goes fast so I need it to stop fast too without parts falling off.

Hi Bill,

Edited by Red Devil - Mar/06/2018 at 8:43pm

Bravo Bill,

billd,

I have a huge amount of respect for your knowledge and opinions,

that's why I'm injecting a bit of humor here,

I have never had parts fly off my SST until well after it penetrates the sound barrier......

Seriously though, you are spot on correct with your attitude about brakes and your comparisons.

and,

I respect you even more for thumbing your nose at a shop owner or foreman who tells you to run something out the door that you didn't agree with. It's all about being able to sleep at night with a clear conscience...and that always means we've done the right thing

Here is something that may be helpful for a future conversion if anyone is interested - 
In short, I gave my front drum brakes to my neighbor and purchased heavy-duty Kelsey Hayes disk brakes from a member - that purchase included the caliper and support brackets, rotors, bearing sets and seals.
From another member I purchased the proper brackets - that go behind the spindle and which the caliper brackets bolt to. there is a left and right bracket, 3210412 and 3210413 (photo of the 412 below, 413 would be a mirror image)

I had spindles from a 1980 Concord with Bendix disk brakes - I had been going to use those but they were rough enough and since the K-H were for sale here - and were a correct option on a 73 Javelin, why not (I'll sell the bendix setup later - without spindles of course)

The Concord spindles APPEARED TO BE part number 3233629 (the 6 was a question mark but is likely the one)
I used a micrometer and measured the mounting "pads" of the Concord spindles to be .893"
When I put things together with the spindles as they were, the rotor outer face was forced into the outboard pad in the caliper - causing the caliper to not bolt to the bracket.
I machined down the mounting pads to .823" thickness and tried again - and this time the caliper mounted and the pad had clearance between it and the outer face of the rotor but it still didn't seem to be centered as nicely as I wanted - the inner pad was further away than the outboard pad was from the rotor face.
I mounted the spindle and machined off more - taking it down to .793" - meaning I had taken off an even 0.100" from the mounting pads.
I bolted the spindle in place, put the rotor back on, mounted the caliper and checked pad clearances again.
This time with the piston fully retracted, pads in place, the inboard and outboard pads each had roughly the same distance from the rotor face.
i machined the same .100" off the other spindle so both spindles will have mounting pad thicknesses of .793" instead of their original .893"

In the end, other than the part number for the spindles being incorrect if someone cared to remove them to look at the back side, everything is correct for 1973 Javelin with Kelsey Hayes disk brakes.
I still won't had the splash shields but I can add those later with little work if I actually FIND a pair.
The spindles are the correct size, use the correct bearings, and hold the rotor pretty well centered in the caliper. 
So someone can use this thread to see what spindles are what, which brackets are needed and so on.

Photos show the brackets that go between the spindle and steering knuckle and hold the calipers, and the point where I machined the mounting pads off the spindles to move them inward to center the rotor better inside the caliper when things were put together. 
For these Kelsey Hayes brakes, you need this bracket and the 413 for the other side...