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View Full Version : Seized Caliper? Maybe? Maybe not?


palmdale_mob
03-12-2009, 11:26 AM
Well, I just recently went 5 lug with ichiba hubs all around and some new s14 se brembo blanks on my s13 coupe. When I was installing the hubs front was a breeze and when I got to my left rear the axle would not come out the hub. So after many attempts of trying to get it out I ended up taking the whole knuckle, hub, and axle to my friends shop and throwing it into a machine press. After nearly shitting myself from the press, the axle came out. Now my problem is after finishing the 5 lug swap I was driving my car and I could hear a grinding noise that I knew had to be the rotor. I took the car home and my rotor was purple. So definitely I knew there was a problem. After trying little things such as pushing the piston in the caliper all the way in, and just lubing, and inspecting stuff, and multiple trips to my friends shop. We decided it had to be a seized caliper. Now my problem is that after changing both rear calipers and truing the left rotor because it was slightly warped, the problem is still there. The calipers are used but the left one is acting exactly the same way as the one did that I replaced. These calipers are used so I'm not saying the caliper isn't be the problem, but is it possible that I bent my knuckle in the machine press causing the caliper to not line up properly and rub on the rotor? I'm starting to think this because if I push in the piston on the caliper and jack up the rear of the car and pump the brakes the wheel still spins freely, but only locks up after driving. Idk I've been trying everything I can think of. Any help? I'd appreciate it a lot

*Update* Added pics

Alright here is the driver's side how it looks when I take off the wheel
Notice how the inner part of the brake pad is on the rotor and there is a gap on the outer part of the pad

http://i15.photobucket.com/albums/a372/play_dude38/DSCN1535.jpg

The rotor on the car, notice how the inside is the only part being worn on the rotor

http://i15.photobucket.com/albums/a372/play_dude38/DSCN1536.jpg

The back of the rotor, now this side is being worn towards the outer part of it

http://i15.photobucket.com/albums/a372/play_dude38/DSCN1537.jpg

Now here is a pic of the brake pad on the rotor of the other side of the car
Notice how the brake pad is evenly spread against the rotor

http://i15.photobucket.com/albums/a372/play_dude38/DSCN1541.jpg

Could this be that the knuckle is bent, causing the caliper to sit slightly sideways causing the brake pads to rub onto the rotor?

Someone please elaborate

projectRDM
03-12-2009, 01:48 PM
It's possible you bent the upright, but you'd need a shit fuck ton of force to do it. More so that a press popping an axle out I think, because the axle would have crowned if you were putting that much pressure on it.
As far as the caliper, I'd bet the new one is seized too, mainly since if it's older than 2-3 years it's seized, all Schassis rear calipers do it. But for the sake of making sure take the wheel off, then bolt the lug nuts down to the rotor so it's flat to the hub, then turn it by hand and thoroughly inspect the caliper/rotor tolerance.

palmdale_mob
03-12-2009, 03:00 PM
Alright I will try that in a few thanks man
If there is anybody on zilvia who knows his stuff its you

pete240
03-12-2009, 03:16 PM
It is possible you may have a collapsed brake line. I had that happened to me damn near replaced the whole brake system and only when I bought new brake lines did the seizing stop. Mine was seizing on the front caliper but I'm suppose it could happen on the rears as well.

palmdale_mob
03-12-2009, 03:19 PM
How would I check for that?
Check for leaks or kinks? maybe?

pete240
03-12-2009, 03:37 PM
well that the hard part you really can't check you just assume...

palmdale_mob
03-12-2009, 04:27 PM
^ haha dayum
I hope its not that lol
Well I took some pics they will be up in a few

palmdale_mob
03-12-2009, 07:15 PM
After extensive research I have decided the knuckle must be bent
If I swap in a different one and the problem persists it must be the caliper
Well thats what I'm hoping

projectRDM
03-12-2009, 08:27 PM
You are fucking Hercules. I've never seen anyone bend a rear upright, they usually break under that much load. That's both horrible for you to have happen but absolutely bad ass too. Take pics of the old one after you pull it.

palmdale_mob
03-12-2009, 08:59 PM
haha I was telling you
I had to put that bad boy in a machine press
Yeah I'll put some pics up, now I just need to find a new one