So I had purchased a ej1 with a rear disc swap on it.. no big deal until yesterday I'm going to swap the rotors and pads and the rotors wont line up? I know all 94 and up integra rotors are the same and same with the si rotors? I'm confused as to why these rotors I purchased won't line up. Is there another rear disc setup the previous owner could have done which I haven't heard of?

Any insight greatly appreciated.

 

What do you mean they "wont line" up?

All 92-00 rear disk cars have the same rotors.

 

Exactly. These new rotors won't line up but the part number is correct, I've checked multiple times already. Could it be that the company of the rotors incorrectly drilled in another pattern and sent them out? I haven't been able to take them back to the store nor compare the rotors to a 4x114.3 car cuz I'm currently at work

 

Are you saying it doesn't line up due to the bolt pattern (4x100 versus 4x114.3) or is it due to the size of the rotor? If it's due to the bolt pattern, try fitting them on your front hubs. This is assuming your front and rear hubs are of the same pattern.

 

Stud placing boss, sorry I should've been more specific. The rotors are supposed to be the specific rotors I need but won't line up, so best guess is they were drilled for 114.3 pattern but sent out incorrectly?

 

So I Just measure the rear and the rear lug pattern isn't 4x100 so it has to be 4x114.3 but what rotors could they have put back there? Please help

 

sounds sorta like someone put prelude hubs into your trailing arm. I'm not too savvy regarding the diameters involved with that but I think that's probably what happened. Could you get some details on the brakes that were on your car? The outer diameter of the rotor and the length of the pad long ways, specifically.

 

Well the calipers are still integra calipers if that helps? I even have the new shoes on them but the rotor I'm not sure of the specs on it. I could try and get measurements asap if that'll help.

 

Being that the rotor is your problem, I think that identifying the rotor's specs will help you in replacing it. It's weird that it's a normal EX/si/integra(non Type R) caliper and pad with a different rotor, but i suppose that the bracket could be different if the rotor has any differences other than the bolt pattern. Or you may have a standard integra rotor that's drilled for the 4x114.3 lugs.

Being that the pads and calipers are standard integra stuff, I imagine that your car was modified specifically to utilize those wheels without a performance upgrade like bigger rotors and pads. If that is the case, you're going to need to find integra rotors that are drilled for 114.3, get rotors without lug holes whatsoever and have them drilled for that size, or have the old rotors resurfaced ( I don't know if resurfacing is a possibility, they may be too far gone to be resurfaced and remain within specification)

 

Honestly it's a headache lol. I can't see why they would have done anything but the average rear swap. The whole idea of keeping the calipers the same even upsets me more and is making something that should be easy to something difficult. I probably won't be able to measure the rotors till the weekend due to work and lack of spare time but I'd much appreciate if you bare with me on some updates because the help is very much appreciated.