Soft/Weak braking after brake pad change?

[TheMAN]

Of course they are. Hell I tracked a car on Duralast pads. They weren't the best but they were better than a set of worn-down stockers. They may not be OEM "awesome" but they'll get the job done. (rofl2)

Thanks for the quick writeup by the way. I just ordered some Pro-Quiets from Tri-Point and will be doing a brake job on my fianacee's Protege5 here in a week or so.

your 1/8 mile or 1/4 mile strip is not the "track"

 

[wildo]

your brakes isn't a hydraulic floor jack

when you push the brake piston back in, there is still fluid inside the piston... how the hell can air go in? ... it ONLY takes 1 pump to do this unless something is horrendously wrong with your brake system!


you have much to learn about brakes

I didn't say anything about air being in the piston cylinder. And you're a insane to think that one stroke of the brake pedal is going to displace 12.566 cubic inches of brake fluid:

pie * 1"^2 (radius of piston, squared) * 1" (stroke- give or take) * 4 (4 pistons) = 12.566 in^3 of brake fluid...

 

[rustychops41]

Always get the OEM pads. They are among the best at brake-dust control, they feel better than the bargain pads out there, and unless you get that special cheap version, you get new clips/hardware too.

 

[slavrenz]

Instead the solution was to return the "crap" autoparts store brake pads that couldn't possibly have worked...

What? (boom07)

 

[slavrenz]

I didn't say anything about air being in the piston cylinder. And you're a insane to think that one stroke of the brake pedal is going to displace 12.566 cubic inches of brake fluid:

pie * 1"^2 (radius of piston, squared) * 1" (stroke- give or take) * 4 (4 pistons) = 12.566 in^3 of brake fluid...

That's why the brake lines aren't the width of the caliper pistons It only takes a little fluid movement through the brake lines to move the relatively large surface area of the pistons.

 

[wildo]

That's why the brake lines aren't the width of the caliper pistons It only takes a little fluid movement through the brake lines to move the relatively large surface area of the pistons.

Wrong. Backwards.

http://science.howstuffworks.com/hydraulic1.htm

 

[sube]

I didn't say anything about air being in the piston cylinder. And you're a insane to think that one stroke of the brake pedal is going to displace 12.566 cubic inches of brake fluid:

pie * 1"^2 (radius of piston, squared) * 1" (stroke- give or take) * 4 (4 pistons) = 12.566 in^3 of brake fluid...

Listen up wildo, I don't think I have been in agreement with a lot stuff Edwin says, but in this case yer full of s***, I have probably done more brake jobs than you have had hot breakfasts, It takes about 3 strokes of the pedal to load the pistons against the pads period!

If it took several days to get satisfactory performance from your pad install, I would be inclined to think you have partially seized sliders on the calipers.

Pat.

 

[slavrenz]

Listen up wildo, I don't think I have been in agreement with a lot stuff Edwin says, but in this case yer full of s***, I have probably done more brake jobs than you have had hot breakfasts, It takes about 3 strokes of the pedal to load the pistons against the pads period!

If it took several days to get satisfactory performance from your pad install, I would be inclined to think you have partially seized sliders on the calipers.

Pat.

Thank you. And I wasn't saying that pressing the brake pedal moves the fluid huge distances - I'm saying that because it is an incompressible fluid, it doesn't take very much pedal movement to seat the brake pads (a few pumps max).

I realize that this is getting kind of heated, but I promise you (as others have) that it is definitely not possible with a normally functioning brake system for your pads to take several days of driving to seat against your calipers and rotors.

 

[RWatters]

your 1/8 mile or 1/4 mile strip is not the "track"

http://upload.wikimedia.org/wikipedia/commons/archive/5/53/20080526052321!Heartland_Park_Topeka.png

Well, it's got your 1/4 mile in there at least right?

I've tracked it with three different cars I have owned over the ages. The first was a '92 Nissan Sentra SE-R. The next was an '06 Honda Civic Si. Last was was an '04 Mazda RX-8 GT. It had the crap pads on it. No fade, but the pads had seen better days at the end of it.

My current toy ('07 Honda Civic Si) won't see the track though. This one needs to last me a while so I'm being nice to it and keeping it off the track. lol

 

[drgnzadiel101]

you can if the rotor isn't warped and majorly grooved

rotor turning isn't required despite what every shop out there does! they do it because they can make better money and reduce liability of rechecks!

but go to tech school and you'd learn something instead of saying I'm wrong

exactly right