78 rotor to hub issue (1 Viewer)

[BEN QUINN]

This is a 78 fj40 with fine spline warn hubs, not mini truck.
Been trying to get this pig back on tge road and got to the brakes but I'm concerned with how the rotor is attaching to the hub.

Order vented hubs and twin piston calipers as a upgrade. Must be the wrong rotors? Any way to fix this?

Concern is the the hole in the rotor is larger than the bolt, so the rotor could spin during braking a 1/8" either direction.

The 2 small indexing holes in the rotor are directly over the wheel studs so drilling and tapping 2 holes won't work.

 

[FJ40Jim]

The 76-80 front rotors are attached by 6 bolts.
The 81-newer rotors are held by 2 bolts, and then all 6 wheel studs are pressed through the rotor to positively hold the rotor.

Your picture shows a 81- rotor, but the truck is a 78, so there is a mismatch.
Get the right rotors and everything will line up.