edit,i just looked at autozones site and they have some more measurements 01dodge 4x front http://www.rockauto.com/catalog/moreinfo.php?pk=391281&cc=1366590 99 dodge 4x front http://www.rockauto.com/catalog/moreinfo.php?pk=1621750&cc=1354148 04 dodge front http://www.rockauto.com/catalog/moreinfo.php?pk=1804524&cc=1424630 04 dodge rear http://www.rockauto.com/catalog/moreinfo.php?pk=1800372&cc=1424630 95 ford 4x frnt http://www.rockauto.com/catalog/moreinfo.php?pk=1803088&cc=1122297 85 cj7 front http://www.rockauto.com/catalog/moreinfo.php?pk=1803974&cc=1181348 86 suzuki sammy front http://www.rockauto.com/catalog/moreinfo.php?pk=1278971&cc=1271102
Ok so it looks like there are several options for rotors, the ECI is a dodge rotor with custom hub. The 74 f-100 rotor/hub are as I understand not seperatable. So if I were to use the built in hub because it is the correct size for the mustang spindal buy cutting it down and fitting it inside a new rotor like mentioned previously by someone how do you keep it all together? Or when you bolt your wheel on it holds it all together? I'm pretty new to disk stuff so excuse my ignorance if some of this is pretty beginner stuff
There are many things to put it together and think about. Rotor can,t hit lower control a arm, The mounting surface need to be 7 1/2 for wheel to bolt to. Caliper needs to cover a much rotor as needed. bracket has to be right location. This company ECI has a kit so you don,t have to think, but go knock your self out.
the rotor just gets held by the wheel when it gets bolted on. it will take some parts digging to get the right combo, i tend to save old rotors from old projects and from doing other peoples brakes just so i have stuff to try out when doing disc conversions. when i did mine, it was just luck that i had all the right **** on the shelf.
I started going down the cut-down 74 f100 hub/Dodge rotor on mustang II spindle, but ran into a few snags, so here's what I found out. Based on information posted to this tech topic, I purchased a new set of 74 f100 front rotors (NAPA part # NB 4885555) and a set of 99 Dodge 4x4 front rotors (NAPA part # NB 4886447). The first problem I ran into was the Dodge rotors have an hub center circle that's smaller than the f100 hub. This could be fixed by enlarging the hub hole on the Dodge rotors. No problem, moving on to next problem: The second problem I ran into was the f100 hubs don't have the same inner-outer bearing spacing as the Mustang II hubs. I had a machinist separate the f100 rotors from their hubs. (The machinist said this was kind of a scary operation!). The f100 hubs accept the same A12/A13 bearings as the Mustang II hubs, but the space between the inner and outer bearing seats is longer on the f100 hubs, by about a 1/2 inch. This means the hub does not slip onto the spindle far enough to thread the spindle nut past the cotter pin hole. I see two solutions: 1) cut down the spindle bearing stop to allow the inside bearing to slip onto the spindle ~1/2 inch, or 2) machine the hub to recess the outer bearing race ~1/2 inch. The problem with the option 1) is the hub will end up sitting too far in on the spindle causing the Dodge rotor to interfere with the spindle knuckle (body, or whatever it's called). The third problem is my own fault for not measuring carefully enough: the f100 hub's outside diameter is larger (by about 1/4 inch) than the inside of the Dodge rotor can (the part that slips over the hub). So to fix this, I'll need to have the f100 hubs turned down a bit to clear the rotor. I'm a little worried about how much of the f100 hub will be left, but it's pretty thick where studs go through (thicker than the ECI kit, as near as I can tell). Anyway, here's some pictures of progress so far. If I make further progress with more machining, I'll post a followup. I just want to run my stock 16" f100 wheels. '74 FWD f100 rotors: Separate the rotor from the hub: Dang it! Outside bearing needs to go in about 1/2 inch. Not enough spindle threads showing:
Another option is to abandon this new hub/rotor idea and just put some on wheel adapters that change the bolt pattern from 5 x 4-1/2 to 5 x 5-1/2: http://www.ezaccessory.com/Wheel_Adapter_5_Lug_4_5_To_5_Lug_5_5_p/5450-5550x.htm It'll add an 1" to each side of the front wheel track, but with the skinner stock 16" x 4-1/2" wide wheels, I think pushing the wheels out a little bit would help the look. As it is now, my roller-skate 14" wheels seem to be inset too far within the fender with my TCI mustang II front end. What's the story on wheel adapters? Good idea to use or not?
JPL Street Rods sells a kit that puts 5x5.5 rotors on a M2 spindle. I recall it being reasonably priced.
I have to say I did not read the whole thread but JW garage offers Mustang two spindles with 5x5.5 bolt pattern
This may be a stupid question seeing as how it's seven months later but do you still have that ECI Mustang kit for sale?
I had the ECI for sale back then, and you are in luck I still have it. What rotors do you need mine are Ford 5 on 5 1/2"
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