82FanTC

iTrader: (9)

Can you put -SE rotors and calipers on the 84-85 big bearing 12a spindles?

Are there any negative issues with the large spindles?

The reason I ask is I am ordering the TTT front coil overs and they can provide either size. I have 2 Rx-7s, one with -SE suspension. If I could get the bigger size and be able to use the coil overs on either car would obviously give me the greatest options.

Thanks

KansasCityREPU

iTrader: (9)

All 84/85 spindles are the same - so the answer is yes - SE rotors and calipers will fit all 84/85 spindles.

82FanTC

iTrader: (9)

If I put big spindles on an 82, all I need are new bearings and rotors right? All else is the same?

I also heard that the big spindles are better for racing.

Is that true?

KansasCityREPU

iTrader: (9)

I can't speak about the racing part, but to put SE brakes on 84/85 12A spindle you need SE bearings, rotors, calipers, caliper bracket, and backing plate. Not sure about the brake soft line. Might as well put new ones on. I went with steal braided.

82FanTC

iTrader: (9)

No I was wondering if there are any mods needed to the 12a brakes if I just switch from the small to the big spindles

I know I need new bearings and rotors to accomodate the different size.

sa7

iTrader: (13)

If you stay with the 12a 4x110 parts, all you need is new bearings and 84/85 rotor... the caliper and caliper bracket will be the same.

82transam

iTrader: (18)

FYI, the inner bearing and seal is the same on all first gens, it's only the outer bearing that is larger for the 84/85. I just put 84/85 spindles on my 83 project last week and was able to reuse the inner bearing (it was only a few years old)

rotornoob

iTrader: (2)

If you order them spindleless you could mount the knuckles and hubs from a TII...thus coilovers and bbk all in one

mustanghammer

iTrader: (3)

All of the first gen spindles are to damn small but the 84-85 spindles seem to be stronger and are desirable for racing.

Before you spend a bunch of money on a set of spindles (big tubes, coil over conversion, etc) have them magnafluxed to check for cracks. Also, in racing applications it is a good idea to check the included angle when doing an alignment. I believe the measurement is 12 degrees and if this changes or your camber adjustments start changing when nothing has been adjusted; the spindle(s) are suspect. They do fail in racing - seen it myself.

By the way, the FC spindles are chunkier with a larger inner wheel bearing. However, FC outer wheel bearing are the same as the ones used on an 84-85 FB.

Redliner223

iTrader: (6)

Nevermind.
I'll need new everything for the conversion.
Got it.