1992 civic DX.. stock brake setup.. I am put gsr rear disks on the car now. Well, i just heard from a friend that when you put rear disks on a car with drum brakes you HAVE to change the master cylinder. Reason why is the drum brakes have a constant pressure of 9psi. SO if you slap on the rear disks and dont change the master cylinder, they will just drag.... ANy truth to this?? Also, im keepin the stock booster and changing the MC. What MC is it that bolts on and doesnt require much bending of any tubes?? Is that an accord one?? What year??

Thanks..

 

You "should" change the MC/BB/PV when you do a complete set-up. Give a nice frim pedal feel and better feedback.

You don't "have" to. We put 90-93 integra brakes on a 91 Si and it worked. Pedal was kind of mushy but it "worked" for the time being till the rest of the parts came in.

 

Ok, well, im talking about a 92 civic dx and if the rear brakes will drag because of the old drum setup if thats true or not..

Also need to know what master cylinder to get.. There i sone out there where you dont have to bend the lines much.. Pretty much plug in...

 

Ok well the 91 Civic we had had rear drum brakes so no.

Just get a GSR or ITR (15/16") if you can find it.

 

Anyone know what MC to use that has the least amount of bending and mod necessary??? 15/16 will work.

Del

 

'91 Civic EX Sedan

 

I dunno who told you that, considering drum brakes take MUCH less pressure to operate than disc...hence the power booster.

BUT, you SHOULD get a proportioning valve...to distrbute the braking power evenly since you have new braking characteristics.

a master cylinder is only going to give you a stiffer pedal feel, which is always nice

 

Integra RS/LS 15/16 MC. No bending necessary. These the same ones the 5G Si with antilock brakes.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by jbs &raquo;</TD></TR><TR><TD CLASS="quote">Integra RS/LS 15/16 MC. No bending necessary.</TD></TR></TABLE>

I got a 15/16ths EG6 MC...plug and play

 

Emerika, let me know if this works.
92-95 civic Si master cylinder, thats 15/16 right?
stock dx brake booster.
Gsr front brakes
gsr rear brakes.
40/40 prop valve off a 90-93 integra non abs.

Let me know.
Del

 

no my stock 94 Civic Si MC is 13/16ths.

When using this setup on my ITR front brakes the pedal was very mushy. If you have a 13/16ths MC, it will work great with the stock sized front/rear brakes, since that's the same size as the Si, etc.

The thing I would focus on getting is the PV...and the 4040 is what you want

But if you're running GSR front and rear, a 15/16ths will give you proper pedal feel and fluid flow

 

Eg6= sir civic??

Since i cant get that one, what master cylinder shouldi get.. I want a 15/16....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by JMU1337 &raquo;</TD></TR><TR><TD CLASS="quote">'91 Civic EX Sedan</TD></TR></TABLE>

 

as stated above, an LS/RS 15/16th's will work perfect, but you may need to reflare one line and use a bigger adapter. The ABS MC's had a bigger outlet to the prop valve, and would need reflaring, where as the 15/16ths w/o ABS is a direct bolt on.

My friend might have another 15/16th's....try PMing Elwood on this board
I've never used the 91 EX MC, but everyone says it's direct bolt in

 

Listen to the man... I didnt

 

Dont want to use the 91 civic ex one... I heard some guy on here had problems when he used that one...

Unless he was just an idiota...

 

it should be very straight foward, IMO much less of a hassle than a 1" ITR/GSR which requires bending/etc..

get that 40/40 PV!!

 

I have a 15/16ths MC off a teg RS if anyone wants it for $25 PM ME. Has the resevoir too.

 

$25 is a good price.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DIY_Racing &raquo;</TD></TR><TR><TD CLASS="quote">Reason why is the drum brakes have a constant pressure of 9psi. </TD></TR></TABLE>

This is true if your using a metering valve which honda doesnt use.

 

so the verdict on a 1992-1995 CX/DX with the only brake upgrade being rear discs is that we should use a 4040 proportioning valve with this setup?
or

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by DIY_Racing &raquo;</TD></TR><TR><TD CLASS="quote">Dont want to use the 91 civic ex one... I heard some guy on here had problems when he used that one...

Unless he was just an idiota...</TD></TR></TABLE>

i think he must be an idiot. i use one on my eg with no problems.

 

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

i think he must be an idiot. i use one on my eg with no problems.</TD></TR></TABLE>ditto.... and PM dp on hh.jp about the 4040 and ask him about it....