Brake booster question...
04-20-10, 06:52 PM
#1
Lead Lap
Thread Starter
Brake booster question...
Hi everyone,
I would like to know if the lines from the brake booster are dealer only items, or are they an average hose tube that can be cut to length ?
The reason I ask is because earlier today I was driving & I tried to brake, but the brakes didn't work.
Luckily (By the blessing of God) I wasn't driving fast & there wasn't much traffic ahead of me, so I was able to slam the car in park & stop. I looked under the hood & saw that a line from the brake booster to the engine was disconnected & the end was brittle & cracked from old age; I slipped it back on & limped my way home doing 5 MPH lol.
I have surplus hose tubing left over from another project & I wanted to know from you guys if this can be used:
If not i'll still head over to the dealer for OEM hoses either way.
Thanks for helping me in this matter.
I would like to know if the lines from the brake booster are dealer only items, or are they an average hose tube that can be cut to length ?
The reason I ask is because earlier today I was driving & I tried to brake, but the brakes didn't work.
Luckily (By the blessing of God) I wasn't driving fast & there wasn't much traffic ahead of me, so I was able to slam the car in park & stop. I looked under the hood & saw that a line from the brake booster to the engine was disconnected & the end was brittle & cracked from old age; I slipped it back on & limped my way home doing 5 MPH lol.I have surplus hose tubing left over from another project & I wanted to know from you guys if this can be used:
If not i'll still head over to the dealer for OEM hoses either way.
Thanks for helping me in this matter.
04-21-10, 02:45 AM
#2
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YOU DID WHAT!!!!!!! WHEN YOU WERE GOING FAST
did i see that you typed "I WAS ABLE TO SLAM THE CAR IN PARK AND STOP"
WHAT THE FARK IN HELL DID YOU DO THAT FOR????????????
JESUS CHRIST YOU ARE STILL ALIVE TO POST IN CLUBLEXUS FORUM
04-21-10, 04:23 AM
#3
Lead Lap
Thread Starter
I need to know if those lines can be used or not before I buy new ones. Just so there is no confusion I was about to turn right & I was already on that side so like I said there was no traffic ahead of me. And I clearly typed that I was NOT driving fast so thats how I was able to put the car in park.
04-21-10, 05:51 AM
#5
Lead Lap
Thread Starter
04-23-10, 08:12 AM
#6
I wound up using some old transmission cooler oil lines I had laying around. Glad you are doing this after the first time it did this. I have driven a year with a bad brake booster hose... lol Out of sight, out of mind I guess, luckily nothing bad had happened and it only popped off 3 times, LMAO. Thank god for downshifting to stop 
.
Anyways, yes its fine.
.Anyways, yes its fine.
04-23-10, 09:25 AM
#7
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IIRC, the brakes should still work without the booster. They'd just be extremely stiff to apply, but they should still work. 
Regular hose will work, but your better off getting a more rigid type hose so it holds its shape better and won't kink.
Regular hose will work, but your better off getting a more rigid type hose so it holds its shape better and won't kink.
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04-23-10, 06:28 PM
#8
Lead Lap
Thread Starter
Yeah that's what the mechanic told me as well, I didn't believe until he took the hose off completely & drove without incident. You learn something new each day lol.
04-23-10, 06:30 PM
#9
Lead Lap
Thread Starter
I wound up using some old transmission cooler oil lines I had laying around. Glad you are doing this after the first time it did this. I have driven a year with a bad brake booster hose... lol Out of sight, out of mind I guess, luckily nothing bad had happened and it only popped off 3 times, LMAO. Thank god for downshifting to stop .
Anyways, yes its fine.
.Anyways, yes its fine.
Now I know they will work without the line.
Last edited by 718murdoc; 04-23-10 at 07:55 PM.
04-23-10, 06:56 PM
#10
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Yes I slammed the car in park... the brakes didn't work so I had no other choice; it was either slam it in park or slam into another car.
I need to know if those lines can be used or not before I buy new ones. Just so there is no confusion I was about to turn right & I was already on that side so like I said there was no traffic ahead of me. And I clearly typed that I was NOT driving fast so thats how I was able to put the car in park.
I need to know if those lines can be used or not before I buy new ones. Just so there is no confusion I was about to turn right & I was already on that side so like I said there was no traffic ahead of me. And I clearly typed that I was NOT driving fast so thats how I was able to put the car in park.
There's a reason that it is cable operated and not hydraulic like the rest of this system, for instances such as this.
04-23-10, 07:44 PM
#11
Lead Lap
Thread Starter
At no point during this EMERGENCY did the EMERGENCY brake come into your mind as an option? Just saying if this ever happens again, try the e-brake before you slam your car into park and hurt the transmission :/
There's a reason that it is cable operated and not hydraulic like the rest of this system, for instances such as this.
There's a reason that it is cable operated and not hydraulic like the rest of this system, for instances such as this.
I forgot to mention that in the beginning.
Last edited by 718murdoc; 04-23-10 at 07:57 PM.
04-23-10, 08:21 PM
#13
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OK, here's another bit of info . . .
the term "EMERGENCY BRAKE" is a complete misnomer anymore. This term was originally used when you were actually able to apply your car's rear brakes by way of pulling (or depressing) the emergency brake lever/pedal which operated right alongside the hydraulic system to engage the "real" rear brake shoes. Back then, it had some actual stopping power.
Nowadays, the correct term for the device is the "parking brake", as that is about all it is good for . . . holding the car still when parked. It only operates a very small, dedicated brake shoe with minimal surface area. If you try to stop your car by way of this "E-Brake", you'll find that not only does it do a really poor job, but that it wears out really fast. It's really NOT worth beans for stopping in an emergency . . . just ask a camry owner
the term "EMERGENCY BRAKE" is a complete misnomer anymore. This term was originally used when you were actually able to apply your car's rear brakes by way of pulling (or depressing) the emergency brake lever/pedal which operated right alongside the hydraulic system to engage the "real" rear brake shoes. Back then, it had some actual stopping power.
Nowadays, the correct term for the device is the "parking brake", as that is about all it is good for . . . holding the car still when parked. It only operates a very small, dedicated brake shoe with minimal surface area. If you try to stop your car by way of this "E-Brake", you'll find that not only does it do a really poor job, but that it wears out really fast. It's really NOT worth beans for stopping in an emergency . . . just ask a camry owner
04-24-10, 10:07 PM
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OK, here's another bit of info . . .
the term "EMERGENCY BRAKE" is a complete misnomer anymore. This term was originally used when you were actually able to apply your car's rear brakes by way of pulling (or depressing) the emergency brake lever/pedal which operated right alongside the hydraulic system to engage the "real" rear brake shoes. Back then, it had some actual stopping power.
Nowadays, the correct term for the device is the "parking brake", as that is about all it is good for . . . holding the car still when parked. It only operates a very small, dedicated brake shoe with minimal surface area. If you try to stop your car by way of this "E-Brake", you'll find that not only does it do a really poor job, but that it wears out really fast. It's really NOT worth beans for stopping in an emergency . . . just ask a camry owner
the term "EMERGENCY BRAKE" is a complete misnomer anymore. This term was originally used when you were actually able to apply your car's rear brakes by way of pulling (or depressing) the emergency brake lever/pedal which operated right alongside the hydraulic system to engage the "real" rear brake shoes. Back then, it had some actual stopping power.
Nowadays, the correct term for the device is the "parking brake", as that is about all it is good for . . . holding the car still when parked. It only operates a very small, dedicated brake shoe with minimal surface area. If you try to stop your car by way of this "E-Brake", you'll find that not only does it do a really poor job, but that it wears out really fast. It's really NOT worth beans for stopping in an emergency . . . just ask a camry owner
AND you're actually wrong in about 50% of modern cars, do some research on "integral calipers", when you activate your e-brake you are engaging a separate either cable and ratchet system, or electric motor which applies the rear brakes.
As for the Sc300/400 itself, lexus used a Drum in Hat e-brake setup, meaning that you actually have a fully functional drum brake, inside the hat of your rotor, so when you use your e-brake, it's actually as if you're stopping using a car with only rear drums, and seeing as drums from all mechanical engineering stand points are actually more effecient at braking than disc brake setups, you're actually not in bad shape.
04-25-10, 08:54 AM
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While I agree that it is not the best stopping power ever, it is still better then nothing.
AND you're actually wrong in about 50% of modern cars, do some research on "integral calipers", when you activate your e-brake you are engaging a separate either cable and ratchet system, or electric motor which applies the rear brakes.
As for the Sc300/400 itself, lexus used a Drum in Hat e-brake setup, meaning that you actually have a fully functional drum brake, inside the hat of your rotor, so when you use your e-brake, it's actually as if you're stopping using a car with only rear drums, and seeing as drums from all mechanical engineering stand points are actually more effecient at braking than disc brake setups, you're actually not in bad shape.
AND you're actually wrong in about 50% of modern cars, do some research on "integral calipers", when you activate your e-brake you are engaging a separate either cable and ratchet system, or electric motor which applies the rear brakes.
As for the Sc300/400 itself, lexus used a Drum in Hat e-brake setup, meaning that you actually have a fully functional drum brake, inside the hat of your rotor, so when you use your e-brake, it's actually as if you're stopping using a car with only rear drums, and seeing as drums from all mechanical engineering stand points are actually more effecient at braking than disc brake setups, you're actually not in bad shape.
Drums are efficient than discs??!! WTH are you talking about
