How to test rear brakes
#16
Drifting
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I know about the fact that fronts go faster that the rears, on my initial post I say that the rears don't seem to wear at all, I'm not even sure I get brake dust on the wheels.
I'll try to test this weekend.
#17
Drifting
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Here's what I tried, I jacked up the car and tried to turn the wheel by hand with a friend on the brakes and could not turn the wheel. Same thing with a 3 foot bar, no way to turn the wheel with almost all my weight on the bar.
Then I started the car and tried to put it in 1st and had no problem at all, even with my foot hard on the brakes, the wheel turned freely, even with the engine idle![EEK!](https://rennlist.com/forums/images/smilies/eek.gif)
What the hell does this mean? Can't be the calipers cause both wheels turned freely.
I even tired removing the fuse from the ABS and it did not make any difference. What's left, brake booster? Is it possible the brake booster could be good for the front brakes but not for the rears?
Then I started the car and tried to put it in 1st and had no problem at all, even with my foot hard on the brakes, the wheel turned freely, even with the engine idle
![EEK!](https://rennlist.com/forums/images/smilies/eek.gif)
What the hell does this mean? Can't be the calipers cause both wheels turned freely.
I even tired removing the fuse from the ABS and it did not make any difference. What's left, brake booster? Is it possible the brake booster could be good for the front brakes but not for the rears?
#18
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I don't know anything about ABS, but I would guess that either it is the problem, your proportioning valve is broken, or you've got air in the lines, somewhere.
Good luck
Last edited by teamking; 08-06-2011 at 09:04 PM.
#19
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Sysgen,
Just stop by the garage for a little pit stop and I will check it out with you. If I remember correctly the previous owner of your car had also some issue with the rear brake something that was probably overlook by his wrencher since the car was used for street only.
I once drove this car on the track (LCMT) back in 2005 and got my first and last spin at corner #4
. My impression was that either I had some kind of brain fart or some brake problem provoke that spin. So thank for your post now I know
.
Just stop by the garage for a little pit stop and I will check it out with you. If I remember correctly the previous owner of your car had also some issue with the rear brake something that was probably overlook by his wrencher since the car was used for street only.
I once drove this car on the track (LCMT) back in 2005 and got my first and last spin at corner #4
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#21
Drifting
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Ok, changed the brake master, lift the rear of the car and in first gear the car will stall if I press the brake but if I give it a little gas the wheels still turn even though I press hard on the brake. Sometimes only one wheel will turn and the other one is stopped.
With the ABS enabled or disabled doesn't make a difference.
So here's the big question, is this normal? Would someone try this test? Are you able to completely stop both wheels when giving it some gas?
With the ABS enabled or disabled doesn't make a difference.
So here's the big question, is this normal? Would someone try this test? Are you able to completely stop both wheels when giving it some gas?
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#22
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Hey Stephane, I could give you hand if you like plus I have a motive power bleeder we could run some blue brake fluid through to see if your calipers are being bled proper.
P.S. We moved back to Montreal and I now have a 2 car garage in my basement!
Nick
P.S. We moved back to Montreal and I now have a 2 car garage in my basement!
Nick
Ok, changed the brake master, lift the rear of the car and in first gear the car will stall if I press the brake but if I give it a little gas the wheels still turn even though I press hard on the brake. Sometimes only one wheel will turn and the other one is stopped.
With the ABS enabled or disabled doesn't make a difference.
So here's the big question, is this normal? Would someone try this test? Are you able to completely stop both wheels when giving it some gas?
![Confused](https://rennlist.com/forums/images/smilies/confused.gif)
With the ABS enabled or disabled doesn't make a difference.
So here's the big question, is this normal? Would someone try this test? Are you able to completely stop both wheels when giving it some gas?
![Confused](https://rennlist.com/forums/images/smilies/confused.gif)
#23
Drifting
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Wow, great news Nick ! Thanks for the offer but I don't think my problem is bleeding. I'm willing to pay a virtual beer to anyone that can try and lift the back of there cars and confirm that they can stop then wheels even when giving it some gas ![Smilie](https://rennlist.com/forums/images/smilies/smile.gif)
Is it possible that the engine is strong enough to overcome the breaks???
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Is it possible that the engine is strong enough to overcome the breaks???
#24
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You apparently don't have LSD which is why one wheel will stop while the other will turn.
Normal.
#25
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I dismantled my old master and found this
First picture you see the locking pin and the hole for the oil. All makes sense, but in picture two you'll see a small disk that was sitting in the bottom, it did not align properly with the hole, and it can't rest flat with the bottom because of the locking pin that sticks out. Anyone knows what the hell is that thing? My replacement MC did not have that.
![](http://forums.rennlist.com/upload/dscf3193.jpg)
![](http://forums.rennlist.com/upload/dscf3194.jpg)
![](http://forums.rennlist.com/upload/dscf3196.jpg)
#26
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Does your parking brake work? See if it's more effective at stopping the wheels while accelerating.
I'd expect, if you have the brakes on hard, the engine wouldn't be able to overpower the car.
I know when I've done some boost tests, and I want to build boost pressure, but not exceed the local speed limits, I'll left-foot brake - and I never seem to have a problem keeping the engine at bay (usually in 2nd or 3rd gear.)
I'd expect, if you have the brakes on hard, the engine wouldn't be able to overpower the car.
I know when I've done some boost tests, and I want to build boost pressure, but not exceed the local speed limits, I'll left-foot brake - and I never seem to have a problem keeping the engine at bay (usually in 2nd or 3rd gear.)
#27
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Does your parking brake work? See if it's more effective at stopping the wheels while accelerating.
I'd expect, if you have the brakes on hard, the engine wouldn't be able to overpower the car.
I know when I've done some boost tests, and I want to build boost pressure, but not exceed the local speed limits, I'll left-foot brake - and I never seem to have a problem keeping the engine at bay (usually in 2nd or 3rd gear.)
I'd expect, if you have the brakes on hard, the engine wouldn't be able to overpower the car.
I know when I've done some boost tests, and I want to build boost pressure, but not exceed the local speed limits, I'll left-foot brake - and I never seem to have a problem keeping the engine at bay (usually in 2nd or 3rd gear.)
Different situation here, you are applying the brakes on all four wheels, not just the two rear wheels.
#28
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Actually, the parking brake uses shoes applied to the inside of a drum - actuated via a cable. The regular brakes use pads applied to a disk, actuated by hydraulic pressure. If the regular brakes are less efficient than the parking brake against the engine, you have a serious problem.