Seized calipers

[S3t0_S13]

For some reason i think my rear right caliper is locked a little, this has happened before and the mechanic said he "reset" it. I think it happened again, how can i find out other then lifting the car, and how can i fix it?

[S3t0_S13]

and my e-brake made a clunk noise,and i felt tension release, only on 1 tire i think the right side, could it still be locked somehow?

[popogto]

gotta jack it up and take a look, your pads were probably not installed right.

[TanManS14]

I recently had a problem like this, but it was on my front brakes. They would be fine when I first started the car up then after a few stops they would grab slightly on the calipers and then yesterday they locked up real good and I could only go about 40 mph top speed. So I thought it was air in the bleed lines so me and my friend bled the lines and it hasnt locked up since. so maybe try bleeding your lines. It worked for me. But that was the front, and I dont know how the back ones operate exactly. Whether it be by cable ect. But remember, when bleeding the lines bleed it in this order, right rear, left rear, right front, left front. And when you bleed them have the car on, pump it five times or so, then hold the peddle down, and have your friend open the bleeder valve, then close it. Do this until there is a solid stream comming out, usually it will take like 2 times, but could be more.

[S3t0_S13]

K i think my rotors are warped, thats wat my dad says anyways, im taking it 2 the shop 2mm, and hopefully get it lasered to flat again, it makes this whirring sound when i drive and it gets faster the more faster i go, and i got some crappy brake pads on, so those might have contributed to the warping
Modified by Seto at 7:30 PM 2/10/2006

[S3t0_S13]

k i found out my calipers are frozen and im gonna need new ones. $160 each -_-

[JNM240]

Make sure you have them flush the brake fluid. Old, contanimated brake fluid is the leading cause in brake caliper seizing. The old fluid contains water which eats and pits the inside of the caliper piston, which is why the caliper seizes up.

[S3t0_S13]

the guy said they cant be rebuild cuz the bushings are messed up

[JNM240]

"bushings"?

There should be no bushings inside the brake caliper. There is a piston that is surrounded by the seal/boot. The piston is probably messed up, for sure. If you look long and hard enough, you could probably find a caliper rebuild kit, and a new caliper piston, but for $160 each, go with new (or rebuilt) calipers.

Ive rebuilt a caliper on my now deceased Porsche 944, but only beacuse it was leaking from the seal, and being a Porsche, the caliper itself cost mucho denero. I have seen MANY seized calipers in my time, and do not recommend trying to rebuild one, since replacements are so available and cost effective.

Replacing a caliper is quite easy, if you can replace pads, you can replace a caliper. Only thing is, once you are done, you have to bleed them.

[S3t0_S13]

my calipers are aftermarket, i dunno, the guy i bought em from had em like this, so i dont noe wat 2 do now

Theres my caliper, painted yellow for some reason, and my cross drilled rotors, so theres no way to rebuild this, or a cheap way out if this rather then $350 for new ones?

[JNM240]

Love the rotors, way cool. And do i see some Tokico blues? I used to have those, a long time ago, until one of my rears started leaking, then i swapped em for my crappy KYB GR2s.

But, no, there is no cheap way out of this. Save yourself the money and do it yourself, that is, if you are mechanically inclined. I see now that its the rear, so replacing them will be much trickier, due to the parking brake mechanism. But it is still straight forward. Dont start the project until you have the new caliper in hand, so you can see where everything goes and how it bolts up. Thats my 2 cents worth. Good luck.

[S3t0_S13]

thxs bout the stuff i got yea they are tokico's and they rocki found some Z32 brake calipers and was wondering wat else was needed for the conversion for all 4 brakesthxs

[JNM240]

http://importnut.net/300zxbrakeswap.htm

The Definitive 300zx Brake Swap. Everything you need to know.