what is the best way to test a bmc?

[slideways]

i installed my z32 brakes and and pedal will get some pressure when i pump it but if i wait about 10 sec and pump it again no pressure. so i reinstalled the stock brakes and....same thing. so i was wonderig what is the easiest way to test my bmc?

(and just to clarify i did bleed the lines.)

[Andy C]

How to taste it? lick it

[slideways]

fixed lol

[flip]

Make sure you don't have the speed bleeder valve on there still. Go look up the writeup I posted on how to remove this...

[slideways]

where? i looked in the sticky thread in braking and DIY and searched threads fro speed bleeder valve and this was the only thread listed.

[S14Pow]

http://240atlanta.com/forums/showthread.php?t=1213&highlight=speed+bleeder

[slideways]

that thread is for the clutch line i am talking about brakes.

[S14Pow]

that was what flip was talking about, air being trapped in that valve. He was suggesting you take it off and see if that helps.

[slideways]

i dont have one my car has a swapped trans

[s7_]

http://www.dirtwerkz.com/images/products/brakes/speed_bleeder_all_300.jpg

[slideways]

ok the title of this thread says what is the best way to test BMC? not witch bleeder screw is right for me. im using the the stock s14 calipers, rotors, and pads and it wont hold pressure.

[flip]

I'm not aware of any way to test without having special tools. If its just a solid line between the master and slave cyl's then do your best to bleed it and if it still dosen't feel good, replace the slave cyl since that's very inexpensive. If that still doesn't' fix the problem, replace the master. Those are really the only things that would affect the system since its relatively simple.

[MOOREOFSTEPHEN]

air in your lines!! JHAaah

[Jorgen]

Let me ask this...
do you really need a BMC?
I mean, its like power steering... for your brakes.

[slideways]

im pretty sure its necessary

[Memme]

Let me ask this...
do you really need a BMC?
I mean, its like power steering... for your brakes.


If our steering was hydraulic lol... which it's not. Yeah, you can steer the R&P without the hydraulic power assistance...

The brakes being hydraulic, the BMC is pretty integral to braking. :goodjob:

[slideways]

i have bled the brakes 3 times and it gets some presure the slowly goes away

[Volcom240sx]

thats so JDM

[slideways]

wow stop posting

[Casey]

yeah sounds like a bad BMC. unless theres a leak somewhere.

btw he is talking about his BRAKE master cylinder flip. not his clutch master.

[slideways]

lol thanks

[s7_]

I showed you pics of them because someone said they didn't know what a speed bleeder screw looked like...

[slideways]

o

[1800DialKyle]

First check for external leaks at lines and inside the car behind the grommet

Second disassemble master cylinder checking the pistons and cup seals around them. If your cup seals on your primary or secondary piston get damaged then your pedal will go to the floor.

I will try and find a write up of how to rebuild your master cylinder. Should be in FSM.

[slideways]

^ thanks but i fixed the problem my calipers were on the wrong side. i know i fail lol

[Infinite]

also, bleed the lines @ the master cylinder
99% of the people dont do this
air rises...