Notices
Brakes & Suspension 350Z stoppers, coils, shocks/dampers

Brakes

Thread Tools
 
Search this Thread
 
Old Jun 1, 2015 | 04:05 PM
  #1  
IridiumCore's Avatar
IridiumCore
Thread Starter
Registered User
 
Joined: Mar 2014
Posts: 30
Likes: 0
From: Bensalem, PA
Default Brakes

Sorry I couldn't find the answer any where.

So my issue is that I recently did my brakes. I did them like I do any other car which I think was my mistake. Is there anything special with these cars that I should have done.

After I changed all my brake pads I noticed my car felt a little sluggish. Then I noticed that without applying the brakes, when I let up off the gas my car will come to a stop as if I'm applying the brakes. For example pulling into work this morning, rounding the corner into the parking lot doing about 20mph I let up off the gas and came to an abrupt stop.

Did I miss something, I did the brakes about two weeks ago and my rears are already metal on metal.

I'm wondering if there was something I was supposed to adjust because it seems like my rear brakes are applying pressure to the rotor.
Reply
Old Jun 1, 2015 | 04:21 PM
  #2  
WeightLimit's Avatar
WeightLimit
New Member
iTrader: (5)
 
Joined: May 2009
Posts: 338
Likes: 6
From: Webster, NY
Default

I typically don't remove the calipers and use a C-clamp to compress the caliper to install new pads. If you don't replace the rotors you need to atleast take them in and get them turned. There's specs they follow on rotor thickness. When you don't do this, the rotors are more than likely not a flat surface and you're installing flat pads. After installing new pads and so on, I usually pump the brake pedal to build up pressure again. Then top off the brake fluid if needed. Never had a problem before.

I've never had a problem with my master/calipers so you'd have to research possible problems with those.

Last edited by WeightLimit; Jun 1, 2015 at 04:25 PM.
Reply
Old Jun 1, 2015 | 05:52 PM
  #3  
terrasmak's Avatar
terrasmak
Super Moderator
MY350Z.COM
Premier Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (8)
 
Joined: Jan 2007
Posts: 29,119
Likes: 2,400
From: Sin City
Default

Bad caliper or slider pin
Reply
Old Jun 1, 2015 | 09:03 PM
  #4  
Cookiezor's Avatar
Cookiezor
Registered User
 
Joined: Jul 2013
Posts: 112
Likes: 2
From: Houston
Default

did u clean and regreased the pins the caliper is floating on?
Reply
Old Jun 2, 2015 | 11:59 AM
  #5  
juelz86z3303's Avatar
juelz86z3303
New Member
iTrader: (1)
 
Joined: Feb 2009
Posts: 147
Likes: 2
From: ontario/long beach/ L.A.
Default

I would retry and bleed the system since you may have not compress the piston in all the way during you install. Start with pasenger rear wheel then driver rear then passenger front and then driver front. Be sure to check your resivoir .
Every caliper has a bleed screw.
Note this will be a good time to add new fluid also don't get it on you paint cuz u will regret it.
Reply
Old Jun 2, 2015 | 12:05 PM
  #6  
icer5160's Avatar
icer5160
New Member
15 Year Member
Liked
Loved
Community Favorite
iTrader: (4)
 
Joined: May 2010
Posts: 2,069
Likes: 618
From: Brentwood, CA
Default

Did you replace your rotors or just the pads? As weightlimit mentioned, you should've compressed the caliper piston to fit the new pads in. You also need to make sure the return spring on the pad guide rail is slotted through the pad arm correctly. Hard to explain, but this return spring (Not a traditional coil spring, just a metal tab) is there to prevent dragging the pad on the rotor when the pedal is not pressed.

What year/trim package do you have?

The brake rotors/pads/calipers change slightly between the older years and newer years. This is true for the base model front brakes... for the Brembo brakes, I'm not sure if they ever made any changes in terms of rotor/pad sizes across the years.

For the rear brakes to be dragging that badly, it sounds like you may have the wrong pads, rotors, or something is seriously wrong with the rear calipers.

If I recall correctly, the lower trim packages (non Brembo) all shared the same rear brake rotor/caliper/pad specs.

Anyway, I hope this helps. More information will be needed for a better analysis.
Reply
Old Jun 2, 2015 | 01:05 PM
  #7  
Cookiezor's Avatar
Cookiezor
Registered User
 
Joined: Jul 2013
Posts: 112
Likes: 2
From: Houston
Default

also, r u sure ur parking brake is not on? - just checking - no offense. maybe u got it on accidentally and that would explain the stuff. u know - its the little things that we miss.
Reply
Old Jun 2, 2015 | 01:45 PM
  #8  
jhc's Avatar
jhc
General & Tech Moderator
MY350Z.COM
Premier Member
 
Joined: Jan 2013
Posts: 10,400
Likes: 2,226
From: ZdayZ
Default

Originally Posted by Cookiezor
also, r u sure ur parking brake is not on? - just checking - no offense. maybe u got it on accidentally and that would explain the stuff. u know - its the little things that we miss.
Good call!


Originally Posted by Cookiezor
did u clean and regreased the pins the caliper is floating on?
Mandatory.

Originally Posted by terrasmak
Bad caliper or slider pin
Most of all, this. Put each wheel up with a stand, turn by hand. You will find your culprit. gl
Reply
Old Jun 23, 2015 | 10:57 AM
  #9  
sundaygolfer's Avatar
sundaygolfer
New Member
 
Joined: May 2015
Posts: 4
Likes: 0
From: florida
Default Brakes

I had a similar problem and was fixed by replacing the front brake flex lines. Apparently the brake the hose had ruptured internally which would not allow the fluid to flow both ways. The mechanic jacked up the car and had difficulty turning the wheel. Vented the brake fluid hose at the disc and the wheel turned. Replaced both front hoses, maybe $100??? Not sure
Reply
Old Jun 23, 2015 | 01:15 PM
  #10  
SQuaLZ's Avatar
SQuaLZ
New Member
 
Joined: Jul 2009
Posts: 3,382
Likes: 116
From: New York
Default

As others said, I would think either you didn't compress the pistons enough or the pins are not freely moving like they are supposed to be.
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
hajwoj
Autocross/Road
27
Nov 1, 2015 05:25 PM
samansharif
Brakes & Suspension
1
Sep 25, 2015 12:31 PM




All times are GMT -8. The time now is 11:44 AM.