Fabricated A-Body spindle ideas and discussion
I don't argue that the Mustang rotor works well on a cut down rotor, but I am guessing it won't fit with the S550 hub. There is only so much room between the caliper mounting plate and the hub. Not that there aren't other possible ways, nor that the offset on the caliper wouldn't fix it some. I am just guessing and my guess is that it won't fit with my design.
Maybe if the LBJ mounting bolts were a countersunk. Trick there is, the way the S550 hub mounts, you most likely have to be able to capture the fastener because the hub has to be bolted to the spindle before the LBJ is bolted up. Unless something different is done like move the hub up a little. Right now, with the hub at the same centerline as the stock spindle, it covers the LBJ bolts enough to make it a bit of a puzzle. That's why I captured the bolts and then put a final spacer over the top in my earlier iterations, and why the nut is fixed and welded in the current one.
The distance from the caliper mounting surface to the face of the hub is 2.6953" with the SP calipers and rotor. The hub is 1.8102" tall, leaving .8851". The nut I am using is 0.5471" tall, so the gap between the back of the hub and outside of the nut is only 0.338". If the S197 rotor is 12mm shorter, that means it is possible that the distance between the surface the caliper mounts to and the back of the hub could be as short as 0.4127". Not enough room for the 5/8" nut I have in there.
Looking at your part above and thinking about my kit for the SP calipers on the disk brake spindle makes me think the difference is less than the 12mm that worries me. So maybe there is room for the nut. I just don't know and I don't have any parts to try and lay it out and see. So I'm not saying it won't work, but I am saying I have concerns and decided to stick with what I have for now. I can't see spending $140 for a caliper to measure off of just to see.
As to price, the SRT rotors are a touch cheaper and the calipers about $20 more each, matching brands. There is the Cardone brand of the SP calipers that is only $7 more per caliper, or you grab the closeout calipers for $42 each. I would say there's really not much difference between the two setups.
When I started look at SP calipers, they were about the same difference, or maybe the SRT calipers were a touch cheaper. Been awhile, but it wasn't much of a difference in cost about 2 years ago when I first started trying to adapt them.
I don't argue that the Mustang rotor works well on a cut down rotor, but I am guessing it won't fit with the S550 hub. There is only so much room between the caliper mounting plate and the hub. Not that there aren't other possible ways, nor that the offset on the caliper wouldn't fix it some. I am just guessing and my guess is that it won't fit with my design.
Maybe if the LBJ mounting bolts were a countersunk. Trick there is, the way the S550 hub mounts, you most likely have to be able to capture the fastener because the hub has to be bolted to the spindle before the LBJ is bolted up. Unless something different is done like move the hub up a little. Right now, with the hub at the same centerline as the stock spindle, it covers the LBJ bolts enough to make it a bit of a puzzle. That's why I captured the bolts and then put a final spacer over the top in my earlier iterations, and why the nut is fixed and welded in the current one.
The distance from the caliper mounting surface to the face of the hub is 2.6953" with the SP calipers and rotor. The hub is 1.8102" tall, leaving .8851". The nut I am using is 0.5471" tall, so the gap between the back of the hub and outside of the nut is only 0.338". If the S197 rotor is 12mm shorter, that means it is possible that the distance between the surface the caliper mounts to and the back of the hub could be as short as 0.4127". Not enough room for the 5/8" nut I have in there.
Looking at your part above and thinking about my kit for the SP calipers on the disk brake spindle makes me think the difference is less than the 12mm that worries me. So maybe there is room for the nut. I just don't know and I don't have any parts to try and lay it out and see. So I'm not saying it won't work, but I am saying I have concerns and decided to stick with what I have for now. I can't see spending $140 for a caliper to measure off of just to see.
As to price, the SRT rotors are a touch cheaper and the calipers about $20 more each, matching brands. There is the Cardone brand of the SP calipers that is only $7 more per caliper, or you grab the closeout calipers for $42 each. I would say there's really not much difference between the two setups.
When I started look at SP calipers, they were about the same difference, or maybe the SRT calipers were a touch cheaper. Been awhile, but it wasn't much of a difference in cost about 2 years ago when I first started trying to adapt them.