Georgia Fiero Club Forum
All Things Fiero => Tech Tips, Tech Questions => Topic started by: scottb on June 29, 2019, 06:01:42 pm
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Lets talk about brakes, pad wear to be specific. My car has been resting peacefully since last fall. Since I have been committed. ...... to the pre run next weekend I have been going through the car and doing some much needed maintenance. I was checking brake pads, on all 4 corners the outside pad is worn a little over half, the inside pad has hardly any wear at all. Why? I have never seen this before.
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The sliders? It sounds as if the sliders need oiling. Not sure of the year of your Fiero.
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Agree with Michael. The inboard or piston side will retract slightly from the rotor but the outside pad stays close. If the slider lubricant is heavy, contaminated or dried out, the caliper won't back away and will keep the outboard pad close. Even with a good system, I think the outer pad will wear a little faster because it stays close to the rotor.
I was using Syl-Glide but have found a newer synthetic brake slider grease that seems to work well. The thing about sliders is that many just lubricate the bolt, but the sleeve needs to be pulled out, the bore in the caliper cleaned and the sleeve and bolt cleaned, then re-lube the bore, the inside of the slider and the O-rings.
The high temp lube is Permatex Ceramic Extreme Brake Parts Lubricant. It isn't as heavy as the Syl-Glide lube. Both are synthetic and won't harm the O-rings.
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(Sarcasm ) I dont understand why the slide pins would be sticky, I rebuilt the brakes 10 years ago (end sarcasm )...... guess I'll have to drag out the floor jack and jack stands again
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It'd probably be a lot easier if you knew someone who had a lift you could put the car on ;D
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Is the lift installed? Must be a vehicle hoist--not a wheel lift.
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God call yall, slide pins on the front calipers were stuck, had to persuade them out with a BFH. All greased up and good to go
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Glad to read it's ready to go.
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It'd probably be a lot easier if you knew someone who had a lift you could put the car on ;D
Somebody in the club has a lift?
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I will never tell.........
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Annnnnnnnd after the trial run yesterday it has been determined that my car needs new pads. Kinda skeery to be stomping the "whoa" pedal and it dont "whoa."
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Try a vacuum leak in the brake booster. Stepping on the brakes only makes you go faster.
You don't feel the brakes as bad duting normal driving? Pads aren't like batteries, getting less powerful as they age; they either work or they don't work. Low pads still stop the car. When you run out of pads, the car does not stop. When the pads are out, you should feel it anytime you try to stop.
Of course, you all have more Fiero expertise than I do, so I could be way off.
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I dont think there is anything wrong per se, these pads are not veryy grippy.....these are Raybestos professional grade semi metallics, they have never been very good
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Ah. We used ceramic pads on an SUV, once. I wasn't dumb enough to do it again. I could stop more quickly by engine braking.
Still, since you apparently ran these brakes for the previous RFTH, you may want to consider that the brake fluid has become contaminated with moisture.
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Now for pad choice, there doesnt seem to be much out there anymore. Any have experience with Bosch pads?
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I am currently running the carbon metalics from TFS and they have a great feel and stop real well. Seems to be way more brake dust then I am used to though. Not tried any others on the current set-up to compare though.
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More stop = more dust.
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I have experience with Bosch on the foreign cars and I think they did some OEM pads for Ford. Heck, try em out and see. Are you ordering online? I need rear pads for AeroDonamic for the same sliding pin issue.
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Bosch something or other brake pads are on the way
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Andddddddd....... changing brake pads today. Do NOT use VersaChem caliper grease. I went through the pins a couple of months ago and they are stuck again. Will pick up some Permatex grease this week. Hard to believe that grease gelled up so thick that the pins are bound up after 1 road trip. Really starting to hate Autozone more than ever.
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O'Reilly's stuff is no better.
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Brake job is done, new Bosch pads installed. Had to rig up a clamp to get the slide pins out. Did I mention that Autozone sucks?
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I was using Syl-Glyde Brake Slider Grease without any problems. I also used it as the lube in the headlight motors because it didn't liquify. When I went to purchase more, they didn't have it, so I got Permatex Ceramic Extreme Brake Parts Lubricant. Good for -50 to 3000 f.
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Yep, Permatex it is
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Forgot to mention that when I was changing bearings and races that I took a good look in the hubs. I found a couple of blobs of casting flash or slag. I had to get out the die grinder and grind it out. I dont know if some that is what ate the bearimg or not but it is gone now. Unimpressed with Chinese casting quality.
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Front hubs?
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Yeah.... you know the part built in to the rotor that holds the bearings.....
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Just checking. Taking this one on RFTH?
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Yes, I am driving the orange 86
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Well, you'll know soon enough, if everything is OK.
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Yes, the car drove much better
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I just have to ask: how did it compare to last year? Better braking? Same? Don't remember?
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Much better braking..... pushing on the pedal actually slowed the car down. With better braking going in to the curves I was able to get back in the gas quicker getting through the curves much faster. Less tire squealing too. These pads are also much quieter, never again will I use Raybestos pads..... It so much better I was almost able to keep up with Charlie
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Awesome!