MBM front disc brake problem? Question? Help!

[Sahara]

So I bought the MBM front disc brake conversion kit for my '70 Coronet.
All installed well UNTIL I get to the part where I place the caliper and pads on the bracket. They won't fit onto the rotor. Hhmmm...
The pads together are 1.2 inches thick, the rotor is 1.0 inches thick for a total of 2.2 inches. The opening in the caliper is 2.075 inches. Not gonna fit.
So here's my problem: is my rotor or pads too thick, or is my caliper wrong?
There's more to my story. I'm in the Arctic. Everything must be slowly and expensively shipped in. So I can't just go to the corner store and shop. But I want to do this safely and properly, so I don't want to machine my rotor if the caliper or pads are wrong, don't want to change the caliper if the pads or rotor are wrong. Does anyone know the proper measurements and what part(s) I need to change?

 

[6290988]

I used the same kit. My caliper had to be compressed a little bit. Did you try doing that yet?

 

[Sahara]

I'll try that. How hard did you have to press? Hand tight or vice?

 

[Fran Blacker]

I use a large C-clamp to compress caliper puck. Pictures would help.

 

[69a100]

Keep the bleeder valve open too, makes some mess with fluid, but makes compressing the piston easier. Good Luck
Man, you must also be getting close to when the snow starts to fly?

 

[Sahara]

Keep the bleeder valve open too, makes some mess with fluid, but makes compressing the piston easier. Good Luck
Man, you must also be getting close to when the snow starts to fly?

It's still pretty warm here during the day but the nights are starting to cool. No frost yet. Snow usually in mid October, ALWAYS by Halloween.

 

[Sahara]

Hey, I used a carpenters "C" clamp with a piece of wood for a pad. Squeezed the piston in EASY! Calipers now fit slick. A super thank you for the help!

 

[Sahara]

I used the same kit. My caliper had to be compressed a little bit. Did you try doing that yet?

Hey, what size wheels did you run? Do you think 14's will fit?

 

[miller]

Pretty sure your going to need 15"s, to get the clearance.

 

[6290988]

Hey, what size wheels did you run? Do you think 14's will fit?

You need 15's or bigger.

 

[Fran Blacker]

I agree 15" wheels but there are some disc kits that 14" will work. If your buying wheels get 15".

 

[Billccm]

This kit Sahara is using might be similar to the Dr Diff kit. I kept my 14 inch wheels and used the Dr Diff front conversion kit with no fitment issues.