Isn't the smaller rotors 11" so 3/4 more will be 3/8 more on the radius? So if you had 3/4 clearance before you should be good ( 3/4 divided by 2 = 3/8" )? The calipers can be ground down slightly if they hit ( casting flash) You have to run 15" rims. Surely they didn't hit on a cordoba that used 15" wheels??
Yeah the smaller rotor is 10.98". So I need at least 3/8" of an inch. It's going to be tight, as it actually looks like I've got less than the 3/4" I thought I had across the entire caliper. I'm just not sure I want to pull apart the whole front end and then have to put it back the way it was after I install everything to find it doesn't fit. I'm planning on going to 17" rims anyway, so I might just wait until I have those too. Its probably overkill, but this is still my only car that runs, so I can't just pull it apart and leave it for a few days if it turns out I need to reinstall the old stuff or buy rims. I can swap the spindles and brakes in less than a day, but if I have to do it 3 times (off and then on and then off again and then back on) it'll probably take 2, so I have to wait until I can be without the car for a couple days just in case.
I know that the 11 3/4" rotors will fit 15" rims, but that doesn't mean they'll fit
all 15" rims, which means they may not necessarily fit my 15" rims. They probably will, but I'm not usually "lucky" when it comes to this sort of thing. My Dart with the "blown head gasket" for example. I pulled one of the heads today and discovered that the head gasket was in fact blown, but that it also skipped timing at some point and has a handful of bent exhaust valves too.
Its less stressful to do the work if I know I have 2 or 3 times longer than I "should" need to get the job done.
I should have time to pull the wheel and take some better measurements tomorrow, I'll keep everyone posted.