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Index > @ the Pickup Bed (General Topics) > Thread: brake woes
Thread: brake woes
mazdarx605


Redlining
Posts: 314
posted May 07, 2011 04:09 PM

brake woes

Hey guys,

I have been unhappy with the way the brakes on my REPU have been working lately. Well today I bought new pads thinking they may need replacement. I took off the wheels,and looked at the pads,and they are brand new looking. I then thought maybe I should bleed the fronts out to see if that helps. I proceeded to break the right side bleeder!!!! Thankfully I had a brand new rebuilt one on hand,and replaced it really quick. I had my wife help bleed the fronts again,and thought I would be all set. Well I took it for a drive,and the brakes seem worse than before. They stop the truck,but with the initial push the pedal pushes to the floor,and the truck doesn't slow very much. If I pump the pedal the brakes grab really good like they should. Any ideas? Master cylinder? Rear troubles contributing to the problem?

Any help would be appreciated. Also I am still looking for stock height front springs still if anyone has some.

Chris

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mazdarx605


Redlining
Posts: 314
posted May 08, 2011 08:42 AM

If I need a Master cylinder where is the best place to get one? Are they even available? Any help would be appreciated.

Chris

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ratboy


Revvin Up
Posts: 53
posted May 09, 2011 11:05 AM

I had a hell of a time bleeding the brakes on my REPU and went through the same hell. New from calipers, new SS brake lines (REspeed!) , new master cylinder (rockauto - have rebuild svc or ones on hand when I needed it) and still had a soft pedal. I ended up getting my wife to help me bleed them and finally got them back to normal. Crappy stock brakes still heat up like a mother if I drive it hard and were usually worthless by the time I pulled into the driveway!
____________
1985 Mazda Rx7 GSLSE
1977 REPU

       
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Brad


Rotorhead
Posts: 1672
posted May 09, 2011 07:25 PM

Bleed them real good, if pumping the pedal helps there's air in the system. Pump 3 times, hold pedal to floor, open the line. Put your used fluid holder (plastic bottle with clear vinyl line) above the caliper so bubbles go UP.

I bought a Motive 1 person bleeder that is just as good as the 2 person method.

Sand both sides of the rotor with 220 grit to get the glaze off. Clean w/brake cleaner. Cutting off the dust shields greatly helps the rotors cool. Front brakes do 80% of the work, so if the rears failed you'd still stop well. Sounds like the fronts need more love.

Brad

       
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mattraver


Revvin Up
Posts: 95
posted May 09, 2011 10:53 PM

preasure bleeder is what i use ,forces fluid through the master.check the rear wheel cylinders , if you pull the dust boot and see brake fluid theyre bad ,same check with the master cylinder . my brakes work well under normal driving conditions but bleeding the rear wheel cylinders is tricky

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