Installed new brake master cylinder, didn't bench bleed it. How screwed am I? - RX7Club.com

Log In 


Installed new brake master cylinder, didn't bench bleed it. How screwed am I?

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 05-02-11, 08:03 PM   #1
Boosted. I got BLOWN!!!
10 Year Member
Thread Starter
iTrader: (29)
 
beefhole's Avatar
 

Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
Installed new brake master cylinder, didn't bench bleed it. How screwed am I?

I installed my new master cylinder tonight, and I failed to bench bleed it.
I installed all my lines and filled with fluid. I proceeded to pump it and expect it to stiffen up. That didn't happen, obviously. So I pumped a bunch more times and thought "wtf?" And... then like an idiot I kept pumping. After finally realizing something is wrong, I called it a night. Now I think "DUH!!!" But it's too late.

So... how bad is it now? I'm sure there is a ton of air in the system. I would rather not take it out again. I know I should hook up some lines and route them back into the reservoir. But... should I undo all the brake lines (difficult method) or can I get away with only undoing one (easy method)?

Probably the hard way at this point. Oh well, haven't driven the car in 6 months, what's another few days.

It's Monday, I'm an idiot
beefhole is offline   Reply With Quote
Old 05-02-11, 08:16 PM   #2
Senior Member
iTrader: (1)
 
MrGoodnight's Avatar
 

Join Date: Feb 2010
Location: Tacoma Washington
Posts: 615
Dont worry man, i just installed a new brake master and didnt bench bleed it as well.
but you still have to bleed the brake sysstem though.
search the forum for how to bleed brakes.
its not hard and im driving around fine.
hope i helped.
MrGoodnight is offline   Reply With Quote
Old 05-02-11, 08:17 PM   #3
Senior Member
iTrader: (1)
 
MrGoodnight's Avatar
 

Join Date: Feb 2010
Location: Tacoma Washington
Posts: 615
I meant bleeding the brakes is not hard. Not that my pedal is not stiff/hard.
MrGoodnight is offline   Reply With Quote
Old 05-02-11, 08:21 PM   #4
Boosted. I got BLOWN!!!
10 Year Member
Thread Starter
iTrader: (29)
 
beefhole's Avatar
 

Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
Bleeding the brakes I know about. I'm a one man operation though so I don't know how long it will take me, especially after I failed the bleed the master.
beefhole is offline   Reply With Quote
Old 05-02-11, 08:28 PM   #5
Senior Member
iTrader: (1)
 
MrGoodnight's Avatar
 

Join Date: Feb 2010
Location: Tacoma Washington
Posts: 615
You might need to borrow another body to help you out, i had to bleed mine 3 times to get all the air out of my system.
MrGoodnight is offline   Reply With Quote
Old 05-02-11, 09:02 PM   #6
talking head
5 Year Member
 
bumpstart's Avatar
 

Join Date: Apr 2008
Location: Perth, WA, OZ
Posts: 2,776
are you worried now after all those reposts?

if you have a clutch or brake master that fails to pickup the fluid cause of airlock the solution is easy

you need a spare round cap off the top off a master and you tap the top for an airline fitting
( or bike pump )

you run up the compressor and then bleed it back so it has less than 5 psi in it
connect the airline to the cap and use the air pressure to assist the initial bleeding process
( as hinted you can use a bike tyre air pump )

do not use pressure higher than this as it will blow the cap or bowl off and make a big nasty mess
bumpstart is offline   Reply With Quote
Old 05-02-11, 09:07 PM   #7
Senior Member
iTrader: (1)
 
MrGoodnight's Avatar
 

Join Date: Feb 2010
Location: Tacoma Washington
Posts: 615
no im not worried, my phone just keeps reposting everything.
MrGoodnight is offline   Reply With Quote
Old 05-02-11, 09:24 PM   #8
Boosted. I got BLOWN!!!
10 Year Member
Thread Starter
iTrader: (29)
 
beefhole's Avatar
 

Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
oh no what have I done!
beefhole is offline   Reply With Quote
Old 05-02-11, 09:25 PM   #9
Turbo vert
10 Year Member
iTrader: (33)
 
just startn's Avatar
 

Join Date: Aug 2005
Location: Elyria, OH
Posts: 2,693
^^^^^ lol....i seriously was laughing out loud for 30sec straight. YOU WORRIED? do just what bumb start said. go to vatozone, Pepboys, Advanced, orillys, ect.... Get a metal valve steam.the part that goes on the inside of the rim is flat and the part that goes on the outside has a nut and the outside of the valve is threaded. Now you need another cap. Drill a hole in the cap, put the valve threw, put the nut on, put the cap back on, bicycle pump...Be done in 5min. i already have a brake&clutch caps made for this.
just startn is offline   Reply With Quote
Old 05-02-11, 10:19 PM   #10
Rotary Freak
10 Year Member
iTrader: (16)
 
PvillKnight7's Avatar
 

Join Date: May 2002
Location: Maryland
Posts: 2,596
Dont stress man, i also just installed a new brake master and didnt bench bleed it.
but you still have to bleed the brake system!
search the forum for how to bleed brakes!
its not hard!
hope i helped.
PvillKnight7 is offline   Reply With Quote
Old 05-03-11, 12:39 AM   #11
Senior Member
iTrader: (1)
 
MrGoodnight's Avatar
 

Join Date: Feb 2010
Location: Tacoma Washington
Posts: 615
Man i feel like an idiot guys, im just going to run my phone over with my fc. Sorry for all the doulbe, triple posts..
MrGoodnight is offline   Reply With Quote
Old 05-03-11, 01:22 AM   #12
Law Breaker
5 Year Member
 
Carzy Driver's Avatar
 

Join Date: Oct 2005
Location: S.F. Bay Area, California 510
Posts: 3,333
LMAO @ all the reposts... OP, you seriously can't get a friend to help bleed the air out for about 10 minutes? Even a kid can help you out.
Carzy Driver is offline   Reply With Quote
Old 05-03-11, 05:58 AM   #13
Boosted. I got BLOWN!!!
10 Year Member
Thread Starter
iTrader: (29)
 
beefhole's Avatar
 

Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
No friends, perhaps a hockey stick? If it's a matter of opening a brake bleed valve and pounding away, I can handle it. I was worried about air getting "stuck" around the master and not being able to get it out.

"what have I done" was in reference to all the reposting
beefhole is offline   Reply With Quote
Old 05-03-11, 07:22 AM   #14
PedoBear
10 Year Member
iTrader: (4)
 
nycgps's Avatar
 

Join Date: Jun 2006
Location: Bye NYC. you SUCKED!
Posts: 1,399
wow wtf? what kind of phone u are using lol
nycgps is offline   Reply With Quote
Old 05-03-11, 08:20 AM   #15
Full Member
5 Year Member
 

Join Date: Dec 2003
Location: Calgary, Alberta
Posts: 231
Quote:
Originally Posted by beefhole View Post
No friends, perhaps a hockey stick? If it's a matter of opening a brake bleed valve and pounding away, I can handle it. I was worried about air getting "stuck" around the master and not being able to get it out.

"what have I done" was in reference to all the reposting

It isn't a matter of opening a bleed valve and pounding away, it is a synchronized process of opening a bleed valve, stepping on the pedal, closing the bleed valve and releasing the pedal. Alternatively you can get a motive power bleeder or use the air compressor method described above. Bring the reservoir up to 3-5psi and open a bleed valve until nothing but brake fluid comes out, or you lose pressure (which will probably happen the first few times). Top up the reservoir with brake fluid, repressurize and repeat.
Zero10 is offline   Reply With Quote
Old 05-03-11, 08:24 AM   #16
Reliably broken
5 Year Member
iTrader: (23)
 
Spirit-RE's Avatar
 

Join Date: Dec 2008
Location: Wisconsin
Posts: 2,800
Go to autozone and get a self bleeder bottle thing, they're like $5 and do wonders. I put a master in my old fc before I knew about bench bleeding, all I did was crack the lines open at the master cylinder and bled it there first, then proceeded to bleed it normally at the slave cylinders.
Spirit-RE is offline   Reply With Quote
Old 05-03-11, 11:50 AM   #17
Boosted. I got BLOWN!!!
10 Year Member
Thread Starter
iTrader: (29)
 
beefhole's Avatar
 

Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
I must rephrase my phrasing. I know how to bleed brakes, done it a dozen times on different cars. My issue was I forgot to bleed the master, and was worried about what issues it would cause, and how much extra work I was giving myself to do. I will try to hit up autozone and get a self bleeder

thanks
beefhole is offline   Reply With Quote
Old 05-03-11, 04:39 PM   #18
FC3S Maniac~
iTrader: (5)
 

Join Date: Oct 2009
Location: Minnesota
Posts: 179
Lol why are you worked about the master? The master connects to all your brake lines, you just need to make sure you bleed your entire system thoroughly
siikduke is offline   Reply With Quote
Old 05-03-11, 04:49 PM   #19
Rotary Freak
10 Year Member
iTrader: (16)
 
PvillKnight7's Avatar
 

Join Date: May 2002
Location: Maryland
Posts: 2,596
Quote:
Originally Posted by siikduke View Post
Lol why are you worked about the master? The master connects to all your brake lines, you just need to make sure you bleed your entire system thoroughly
yep
PvillKnight7 is offline   Reply With Quote
Old 05-03-11, 05:13 PM   #20
Victim of Reality
10 Year Member
iTrader: (10)
 

Join Date: Aug 2005
Location: O Fallon MO
Posts: 1,845
As said before, get a self bleeder. I've used them for years with great results.

If the master is stubborn about taking in fluid, try cracking the line fittings at the master cylinder and then pumping. Also try moving the pedal real slow at first. I seem to have better luck with a slow movement instead of a rapid one. It will eventually take fluid.
TonyD89 is offline   Reply With Quote
Old 05-03-11, 07:52 PM   #21
Boosted. I got BLOWN!!!
10 Year Member
Thread Starter
iTrader: (29)
 
beefhole's Avatar
 

Join Date: Sep 2003
Location: Queens, NY
Posts: 3,742
thanks for all the suggestions. I was "worked up" about the master because I forgot to bench bleed, and I was reading that this is a fairly important thing to do with a brand new one. Anyway, I took off 2 lines, and ran tubes routed back into the reservoir. It seemed to get the juices moving. After that I bled the rear wheel ONCE and the pedal stiffened up good. I called it a night early and will be picking up a self bleeder tomorrow. Time to do things right!
beefhole is offline   Reply With Quote
Old 05-03-11, 11:20 PM   #22
Dual Wielding DieGrinders
10 Year Member
iTrader: (3)
 
theflatlander's Avatar
 

Join Date: Aug 2002
Location: Elko, NV
Posts: 701
One-way bleed valves, Google speedbleeders.
theflatlander is offline   Reply With Quote
Old 05-04-11, 10:10 AM   #23
FC3S Maniac~
iTrader: (5)
 

Join Date: Oct 2009
Location: Minnesota
Posts: 179
Glad you've started to get pressure! Everything else should work out perfectly fine~ ;3
siikduke is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
CZeroMedia's LS6 Wide Body Race Car Build BNR34RB26DETT Build Threads 28 06-07-16 04:28 PM
[For Sale] 1985 GS Brake Master Cylinder (Practically New) Glazedham42 1st Generation RX-7 (1979-1985) Parts 5 09-20-15 08:34 PM
mazda big brake kit problems :( josef 91 vert 2nd Generation Specific (1986-1992) 23 09-03-15 11:20 AM
Turbo II brake help. Almost there. Frisky Arab 2nd Generation Specific (1986-1992) 13 08-18-15 05:30 PM
[For Sale] 1980 Mazda RX7 For Sale Rx7 4Rudy 1st Generation RX-7 (1979-1985) Vehicles 0 08-14-15 09:32 PM


Tags
1991, 92, bench, benchbleed, bleed, brake, brakes, civic, cylinder, installed, master, mastercylender, mazda, rx7, sideways

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On



All times are GMT -5. The time now is 02:57 PM.


All content Copyright 2007 by Internet Brands, Inc.