Road Racing / Autocross & Time Attack Road Racing / AUTOX, HPDE, Time Attack

Bleeding brakes...

Thread Tools
 
Search this Thread
 
Old Nov 13, 2004 | 02:24 PM
  #1  
LX4CYL's Avatar
Thread Starter
 
Joined: Jun 2003
Posts: 667
Likes: 0
From: Houston, TX, USA
Default Bleeding brakes...

Am I supposed to leave the reservoir cap on in between fillups when bleeding? I usually don't...
Reply
Old Nov 13, 2004 | 02:30 PM
  #2  
Scot's Avatar
Honda-Tech Member
 
Joined: Nov 2000
Posts: 1,002
Likes: 0
From: harrisburg, PA, USA
Default Re: Bleeding brakes... (LX4CYL)

i never have.
Reply
Old Nov 13, 2004 | 03:19 PM
  #3  
LX4CYL's Avatar
Thread Starter
 
Joined: Jun 2003
Posts: 667
Likes: 0
From: Houston, TX, USA
Default Re: Bleeding brakes... (Scot)

Hmm, my pedal just feels like crap lately. I'll try another bleed during the day with a pedal-pusher that can make it thru one cycle without falling asleep in the driver's seat

Perhaps I should look into checking out my rear drum brake adjustment? I've never pulled those drums off before, and it would probably help to clean out some of the gunk that's accumulated back there over the past few years...
Reply
Old Nov 13, 2004 | 03:43 PM
  #4  
.RJ's Avatar
.RJ
Senior Member
 
Joined: Oct 2001
Posts: 30,826
Likes: 0
From: RIP Craig Jones
Default Re: Bleeding brakes... (LX4CYL)

Gravity bleed.
Reply
Old Nov 13, 2004 | 03:54 PM
  #5  
LX4CYL's Avatar
Thread Starter
 
Joined: Jun 2003
Posts: 667
Likes: 0
From: Houston, TX, USA
Default Re: Bleeding brakes... (.RJ)

Although I can't help but roll my eyes everytime you push the gravity bleed idea, I sometimes resort to it when I don't feel like fighting with that tiny rear drum bleeder screw. It's worked well for me most of the time, but I did screw it up once (recently), and I think that's when the mushiness started becoming a slight nuisance
Reply
Old Nov 13, 2004 | 05:59 PM
  #6  
Mike_C's Avatar
Honda-Tech Member
 
Joined: Nov 2001
Posts: 11,272
Likes: 1
From: Arlington, VA
Default

definately definately DEFINATELY look at the rear drums... for 2 years i had a crappy pedal, and i bled bled bled to the point that i now hate bleeding. oscar told me to check the drums and sho'nuff that was the solution. you don't even need to do anything to check them... jack the rear tires off the ground and spin the wheels, there should be some resistance.
Reply
Old Nov 13, 2004 | 10:08 PM
  #7  
_RevHardD15's Avatar
 
Joined: Oct 2004
Posts: 65
Likes: 0
From: Dallas, Texas, USA
Default Re: (Mike C)

can you gravity bleed all 4 brakes? i know u can gravity bleed a clutch, but the brakes?
Reply
Old Nov 13, 2004 | 10:13 PM
  #8  
_RevHardD15's Avatar
 
Joined: Oct 2004
Posts: 65
Likes: 0
From: Dallas, Texas, USA
Default Re: (_RevHardD15)

oh, and no there shouldnt be any resistance ... for drum brakes, u take the drum off and spread the lock nut on the drum untill the drum has a tight fit, but not strong resistance or just adjust them from in the car, by going backwards 10 feet, coming to a complete stop and going forward 10 feet, and coming to a complete stop, doing this 1 time rotates the clicking wheel one time keep that in mind... but a garage parked car usually keeps up with that on its own... there should be resistance on the drums only if you just adjusted the wheel cyl manually,
Reply
Old Nov 14, 2004 | 07:13 AM
  #9  
LX4CYL's Avatar
Thread Starter
 
Joined: Jun 2003
Posts: 667
Likes: 0
From: Houston, TX, USA
Default Re: (_RevHardD15)

Yeah, I'm away from my apt at college with limited tools here, so last night I pulled the wheel off with hopes of pulling the drum off. Never did pull the drum off, but the rear wheels spin way too much when they're in the air. I definitely need to adjust those rear drums when I get back...
Reply
Old Nov 14, 2004 | 09:13 AM
  #10  
REFLUX's Avatar
 
Joined: Mar 2003
Posts: 338
Likes: 0
From: Edmonton, Canada
Default

can someone explain Gravity Bleeding to me???
Reply
Old Nov 14, 2004 | 11:04 AM
  #11  
danmoore80's Avatar
 
Joined: Aug 2004
Posts: 7
Likes: 0
From: San Antonio, TX, United States
Default

Question. I cannot get the rear caliper to compress so I can change to new pads. I opened the reservoir cap, unscrewed the nipple behind the caliper(I sliped a hose with brake fluid over the nipple to prevent air getting into the line), but nothing worked. Is there something that I am missing?
Reply
Old Nov 14, 2004 | 01:43 PM
  #12  
Knestis's Avatar
Honda-Tech Member
 
Joined: Dec 2001
Posts: 4,035
Likes: 0
From: Greensboro, NC, USA
Default Re: (danmoore80)

Gravity bleeding is when the valves are opened and the fluid simply flows out of them, from the mass of fluid at a higher level. Technically, it should be called "hydrostatic pressure bleeding," since it relies on gravity acting on the mass of the fluid, and the difference between the bleeder and reservior heights, to make it work.

K

Reply
Old Nov 14, 2004 | 01:45 PM
  #13  
siisgood00's Avatar
New User
 
Joined: Apr 2001
Posts: 1,720
Likes: 0
From: Portland, OR
Default Re: (Knestis)

Can someone please explain to me what a drum brake is??

LX- Your Accord has rear drums?!
Reply
Old Nov 14, 2004 | 01:56 PM
  #14  
krshultz's Avatar
Honda-Tech Member
 
Joined: Apr 2000
Posts: 3,846
Likes: 1
From: I started it
Default Re: (danmoore80)

The piston on the rear caliper turns in on a screw mechanism. Get something on it that will grab it without damaging it and turn clockwise.
Reply
Old Nov 14, 2004 | 02:16 PM
  #15  
.RJ's Avatar
.RJ
Senior Member
 
Joined: Oct 2001
Posts: 30,826
Likes: 0
From: RIP Craig Jones
Default Re: (REFLUX)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by REFLUX &raquo;</TD></TR><TR><TD CLASS="quote">can someone explain Gravity Bleeding to me???</TD></TR></TABLE>

g00gle ownz you

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by krshultz &raquo;</TD></TR><TR><TD CLASS="quote">The piston on the rear caliper turns in on a screw mechanism. Get something on it that will grab it without damaging it and turn clockwise.</TD></TR></TABLE>

I use a big flathead screwdriver in the slots of the piston and turn.
Reply
Old Nov 14, 2004 | 03:31 PM
  #16  
LX4CYL's Avatar
Thread Starter
 
Joined: Jun 2003
Posts: 667
Likes: 0
From: Houston, TX, USA
Default Re: (siisgood00)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by siisgood00 &raquo;</TD></TR><TR><TD CLASS="quote">Can someone please explain to me what a drum brake is??

LX- Your Accord has rear drums?!</TD></TR></TABLE>

yep, 98-02 LX/SE/DX/VP came with them. Although there was the option for ABS on the LX/SE, so there may be LX/SEs out there with rear discs. Only the EX, and the EX/LX V6s came with rear discs+ABS I believe. Even some of the new 03-05s have rear drums...
Reply
Old Nov 14, 2004 | 09:23 PM
  #17  
Evs-One's Avatar
Solbros Owns Me
 
Joined: Jun 2002
Posts: 14,462
Likes: 6
From: Vancouver, WA, USA
Default Re: (LX4CYL)

Deffinately adjust your rear drums. 90% of the cars out there are stopping no where near as well as they could because of this. A properly adjusted rear drum will make a noticable difference in pedal feel and stopping ability, as well as e brake feel.

With the wheel off... spin the drum and it should spin about 1 full revolution before coming to a hault. DOn't do so with the tire on, because this adds to much of a variable.

And I am against gravity bleeding, so you guys call it. No where near as efficient as pressure bleeding, let alone vacuum bleeding.

And when spinning the piston back in on rear discs, I found it easier to rptate the piston out a 1/4 turn, and then in....it will go in a lot easier
Reply
Old Nov 14, 2004 | 10:55 PM
  #18  
Art Vandeleigh's Avatar
 
Joined: Dec 2001
Posts: 1,880
Likes: 0
From: up yours
Default Re: (Emerika)

trying gravity bleeding a car with over 150k. You can sit there all day long hoping for some brake fluid to come out...only to be sorely let down. On a new car, no problem. but on an old car...gravity=good luck
Reply
Old Nov 15, 2004 | 04:16 AM
  #19  
MaddMatt's Avatar
Honda-Tech Member
 
Joined: Sep 2000
Posts: 2,768
Likes: 2
From: Kings Mt., NC
Default Re: (Art Vandeleigh)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">rear wheels spin way too much when they're in the air.</TD></TR></TABLE>

There's your problem...
Reply
Old Nov 15, 2004 | 05:59 AM
  #20  
Mike_C's Avatar
Honda-Tech Member
 
Joined: Nov 2001
Posts: 11,272
Likes: 1
From: Arlington, VA
Default Re: (_RevHardD15)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by _RevHardD15 &raquo;</TD></TR><TR><TD CLASS="quote">oh, and no there shouldnt be any resistance ... for drum brakes</TD></TR></TABLE>

wanna bet? not so it is difficult to turn, but there definately needs to be some friction.
Reply
Old Nov 15, 2004 | 01:40 PM
  #21  
nonsense's Avatar
Honda-Tech Member
 
Joined: Jun 2003
Posts: 4,167
Likes: 0
From: Portland, OR
Default Re: (Emerika)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Emerika &raquo;</TD></TR><TR><TD CLASS="quote">Deffinately adjust your rear drums. 90% of the cars out there are stopping no where near as well as they could because of this. A properly adjusted rear drum will make a noticable difference in pedal feel and stopping ability, as well as e brake feel.

With the wheel off... spin the drum and it should spin about 1 full revolution before coming to a hault. DOn't do so with the tire on, because this adds to much of a variable.

And I am against gravity bleeding, so you guys call it. No where near as efficient as pressure bleeding, let alone vacuum bleeding.

And when spinning the piston back in on rear discs, I found it easier to rptate the piston out a 1/4 turn, and then in....it will go in a lot easier </TD></TR></TABLE>

yeah I was having the same problem with a soft pedal feel. I adjusted the rear drums and was amazed at the difference it made

I need to do it again soon tho . . .
Reply
Old Nov 15, 2004 | 02:46 PM
  #22  
Knestis's Avatar
Honda-Tech Member
 
Joined: Dec 2001
Posts: 4,035
Likes: 0
From: Greensboro, NC, USA
Default Re: (nonsense)

I think that it might be useful to make the distinction between a "soft" brake pedal and one that has travel before it works. Brake shoes that are some distance from the drum will influence the latter but the pedal will either be firm or not firm, once that travel is used up, based on other factors.

The last car with drums that I raced was our ex-IMSA Renault Cup Alliance. We worked very hard to make damn sure that the shoes were NOT dragging on the drum, to assure that we weren't using any of our 64hp making heat going down the straights...

K
Reply
Old Nov 15, 2004 | 02:55 PM
  #23  
nonsense's Avatar
Honda-Tech Member
 
Joined: Jun 2003
Posts: 4,167
Likes: 0
From: Portland, OR
Default Re: (Knestis)

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Knestis &raquo;</TD></TR><TR><TD CLASS="quote">I think that it might be useful to make the distinction between a "soft" brake pedal and one that has travel before it works. Brake shoes that are some distance from the drum will influence the latter but the pedal will either be firm or not firm, once that travel is used up, based on other factors.</TD></TR></TABLE>

yes I should point out that my "soft" pedal feeling was actually too much travel before it became a solid pedal. That's why it was confusing me so much . . . . . I should have know better being that my first few cars had 4-wheel drum brakes that liked to be adjusted on a regular basis.
Reply
Old Nov 15, 2004 | 02:58 PM
  #24  
LX4CYL's Avatar
Thread Starter
 
Joined: Jun 2003
Posts: 667
Likes: 0
From: Houston, TX, USA
Default Re: (nonsense)

I think I have a combination of both: A soft pedal, and a little more travel, due to a poor bleed job and rear drums that need to be adjusted...
Reply
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
96hb
Suspension & Brakes
2
Oct 28, 2010 08:52 AM
b18c-ivic_gsR
Honda Civic / Del Sol (1992 - 2000)
24
Nov 1, 2006 06:08 PM
litterbox
Acura Integra
30
Apr 1, 2005 06:38 AM




All times are GMT -8. The time now is 01:29 AM.