the_0ne

A friend of mine and I installed Front Gsr brakes on my 1994 CX.

We bleed all the brake lines and there is no pressure still.

We are using the stock master cylnder/ propotioning valve / booster, I have the GSR ones lying around but do I need to put all 3 of these on to make my brakes work properly? (drums in rear still)

Can I use my stock booster with GSR pro valve/master cyl? or stock everything but the propotioing valve?

Ricey McRicerton

I'd up to the GSR MC/BB if you don't mind rebending or reflaring lines. You should be able to bleed the air out of it as is.

You don't want to swap over to the new prop valve though.

the_0ne

so the master cylinder and booster?

Ricey McRicerton

You can, but you should be able to bleed them to where they work with your stock stuff.

the_0ne

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">You can, but you should be able to bleed them to where they work with your stock stuff.</TD></TR></TABLE>

it doesnt hold pressure, we bleed them correctly

ABK

check the lines a small leak in one line will cause the pressure to just disapear.

LSpimpTEC

well i know for a fact that you dont have to use the gsr master assym. but if you want to up it...go for it. check for leaks

drevinder

did u make sure the fluid didn't run out of the m/c when u was doing the conversion?......

redline23

use a ex eg brake master cylinder its cheaper and they are 15/16 already. stock booster should be fine. check the calipers .

the_0ne

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by redline23 &raquo;</TD></TR><TR><TD CLASS="quote">use a ex eg brake master cylinder its cheaper and they are 15/16 already. stock booster should be fine. check the calipers . </TD></TR></TABLE>

I think we need to bleed them more

the_0ne

still no pressure

Hybrid96EK

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by the_0ne &raquo;</TD></TR><TR><TD CLASS="quote">still no pressure</TD></TR></TABLE>

Then you have a leak, plain and simple. Also, while you don't "need" to upgrade the master cylinder you still should. The larger calipers require more fluid to fill and thus will = farther travel on a stock 13/16 master cylinder. I ran the stock master on my EG for about 3 days until I swapped in a booster and master cylinder from an LS integra. It made a world of a differnece, as expected.

Eyewitness

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by the_0ne &raquo;</TD></TR><TR><TD CLASS="quote">A friend of mine and I installed Front Gsr brakes on my 1994 CX.

We bleed all the brake lines and there is no pressure still.

We are using the stock master cylnder/ propotioning valve / booster, I have the GSR ones lying around but do I need to put all 3 of these on to make my brakes work properly? (drums in rear still)

Can I use my stock booster with GSR pro valve/master cyl? or stock everything but the propotioing valve?</TD></TR></TABLE>


If you only installed the front brakes you shouldnt have to upgrade the master cylinder or prop valve. It always helps but... The only reason you do that on a REAR disc swap is because DRUMS use higher pressure to operate and if you swap REAR disc without a prop valve they will most likely rub and wear due to the higher pressure. Back to the topic at hand. The difference between the GSR calipers and CIVIC calipers is that the bore is bigger. Not big enough to make you lose pressure completely and honestly you shouldnt feel to big of a loss in pressure overall. So as stated before you probably have a leak. Does the resorvoir continue to drain after the bleeder plugs are tightened? Check that. Also i always bleed my car RL,LF,LR,RF and that has worked for me.

EFb18b

here's a simple question: have you pumped the brakes enough? it takes maybe 10-15 pumps to build up the pressure needed before you go driving. you guys completely drianed the brake lines from what I gathered so its going to take some time to build pressure.

LSpimpTEC

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Hybrid93Eg &raquo;</TD></TR><TR><TD CLASS="quote">

Then you have a leak, plain and simple. Also, while you don't "need" to upgrade the master cylinder you still should. The larger calipers require more fluid to fill and thus will = farther travel on a stock 13/16 master cylinder. I ran the stock master on my EG for about 3 days until I swapped in a booster and master cylinder from an LS integra. It made a world of a differnece, as expected.</TD></TR></TABLE>

im sure that i would feel a difference. mine are a little softer than i like. what booster did you switch to?

AzntaggeR

or you could use an integra RS MC/BB. no need to reflare brake lines.

Eyewitness

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by AzntaggeR &raquo;</TD></TR><TR><TD CLASS="quote">or you could use an integra RS MC/BB. no need to reflare brake lines.</TD></TR></TABLE>

You are wrong.If you are going this on an EG,and you want to upgrade to MC,use a 15/16ths master cylinder from a 91 4dr ex,this will bolt right up without having to rebend the lines. The intergra MC will not fit right up and YOU WILL need to rebend the lines.

drevinder

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote &raquo;</TD></TR><TR><TD CLASS="quote">You are wrong.If you are going this on an EG,and you want to upgrade to MC,use a 15/16ths master cylinder from a 91 4dr ex,this will bolt right up without having to rebend the lines. The intergra MC will not fit right up and YOU WILL need to rebend the lines.-</TD></TR></TABLE>

no ur are wrong ..and right .....u can use 94 up integra...rs.ls. (15/16)m/c and brake boooster also ...it will bolt right up in eg..with now reflaring or bending line's also..i have that in my car

the_0ne

no pressure still!

Eyewitness

dude...something is not right. If all you did was swap the front calipers there be no way that anyother part could be affected. Are the calipers in good condition? Have you found a leak anywhere?

AzntaggeR

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Eyewitness &raquo;</TD></TR><TR><TD CLASS="quote">dude...something is not right. If all you did was swap the front calipers there be no way that anyother part could be affected. Are the calipers in good condition? Have you found a leak anywhere?</TD></TR></TABLE>

actually i am right. 94+ integra RS master cylinder and brake booster will bolt up, because it is not ABS equipped. if you look at a GSR MC and RS MC, you will notice that the brake lines enter the GSR MC in different locations meaning you will have to rebend and reflair the lines.

carsaregood

there's lots of misinformation about the brake booster/master cylinder interchangeablility...

https://honda-tech.com/zerothread?id=830785
we found out a thing or two about it in this thread

what we found is that some abs MCs don't have 2 different sizes from the lines, so there is no need for reflaring, only bending.

azntagger is right about the rs master, but if you use an integ mc, you need an integra booster.. as far as i know. make sure the mounting ears line up to the booster, some are different than others. if you dont' want to swap boosters, use the civic EX mc.

and to the original poster, as eyewitness said, check for leaks.. the fluid has to be going somewhere.

the_0ne

calipers were on backwards (wrong sides)

all fixed now ah