2 piece rotor disassembly

[R68GTO]

Looking for some help on how to disassemble a two piece rotor. Anyone have a photo of the two parts separated? I'm not sure where to apply press pressure to separate - will be easier to restore as two pcs instead of one.

[ZLP955]

Shouldn't need a press, mine separated very easily once the 5 bolts were out. That took a 4-foot breaker bar though.

[R68GTO]

Having trouble getting the vision on the breaker bar method?

[Lynn]

Impact gun is the way to go.

[m22mike]

I was going to suggest that too. That Lynn is a smart guy.
Mike

[WorkinProgress]

Be sure to assemble the hub and the rotor in the same position as it is a balanced assembly.

- Warren

[ZLP955]

Having trouble getting the vision on the breaker bar method?
Both rotor assemblies with steering arms, backing plates etc still intact had been removed from the car, and as the bolts were seized, I needed some way of holding the assemblies to stop rotation in opposite direction while undoing the bolts. So I used the 4-foot breaker bar as a reaction brace off the work bench, and then the rotor-to-hub bolts could be undone easily.

[R68GTO]

Yep, still feeling like a dumba$$. The 5 bolts came out no problem, just can't get the rotor separated from the hub. I need to go back out to the garage and stare at it for a while, maybe my dim light will brighten:confused2:

Workin' thanks for that tip - I had no idea.

[R68GTO]

Victory is mine! Stared at it a bit and said to myself, "self, your a dumbass". Put it in my shop press, gave it a little encouragement and it popped loose.

[ZLP955]

Not to hijack, but related question- my rotors are marginal on thickness after machining; I've read a few posts here and there about using new rotors (from reproduction 2-piece units) on original hubs. Now wondering about balancing those, following Warren's reminder above..... anyone had that done?

[bbbentley]

Good question Tim, as I have contemplated the same. The topic has me wanting to offer up a FB ad I could act on myself, but chose not to. There is a complete disc brake with 2 piece rotors and appears to be N44 arms on FB off a 69. What I saw right- steering box, all linkage, including idler arm that looked correct, 2 piece rotors, upper A arms, N44 ( pitman looked short and I did not ask for numbers). Has hard to come by clips on hoses to attach to A arms. Looks like original hoses, too. Wrong: calipers, upper ball joints replaced, everything a little crusty. PM and I’ll try and get you hooked up with seller.

[X66 714]

I got the cheap Rightstuff rotor assm. I just used the rotors & my original hubs. If you put 3 lug nuts on the studs it will give you 3 flat areas to put in the vise so you can torque the 5 attaching bolts to 65 foot pounds. Didn't think about balancing. We'll see what happens...Joe

[m22mike]

Another consideration.

A few more $$, but this is a good quality USA made reproduction that I used a few times.


Mike



https://www.heartbeatcitycamaro.com/store/product/21960/67-68-69-Camaro-Chevelle-Firebird-Nova-Disc-Brake-2-Piece-Rotor-GM-3901098-USA/

[dvss1]

Napa used to carry the rotors. The last set I bought was in 2015. They were made in USA (at least it was on the box). Exact as originals too!

[napa68]

I'd even be inclined to check them (or take a light cut) on a brake lathe after all was pressed back together.

I started doing that with front drum brakes to eliminate any sort opportunity for a pedal pulsation.

[ZLP955]

Another consideration.
A few more $$, but this is a good quality USA made reproduction that I used a few times.
Mike
https://www.heartbeatcitycamaro.com/store/product/21960/67-68-69-Camaro-Chevelle-Firebird-Nova-Disc-Brake-2-Piece-Rotor-GM-3901098-USA/
Thanks Mike, so you used both rotors and hubs? I wonder if they come already balanced.

[m22mike]

I used them as a assembly as received. I see now reason to think that they were not balanced. I would be hesitant to use cheaper chine eezz rotors on a driver.

Mike

[ZLP955]

Thanks Mike, would always spend up for quality brake and fuel system parts.

[Jonesy]

Napa used to carry the rotors. The last set I bought was in 2015. They were made in USA (at least it was on the box). Exact as originals too!

NAPA sold 2 piece rotors?? The only ones I could get were 1 piece replacements.

I ended up buying an NOS set off this site :)