Alright so i got the integra brakes all round today for 180 the whole swap hubs, knuckles blah blah. Ne wayz im trying to upgrade the boost and cylinder. Is there any difference between a crx's with discs all round the a ex sedans with discs all round. I just dont know much about brakes and dont want to buy into the wrong thing.

 

Yes, the EX has a 15/16ths master cylinder and larger booster compared to the Si, which has the 13/16ths master cylinder and smaller booster. Swapping for the EX stuff will make the pedal firmer, with less travel.

 

Aight cool now i just gotta find one of them

 

could you still use a crx si booster and add on the civic ex mc?

 

Whats a good place to buy the booster and the master cylinder?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by kcjohnnyboy &raquo;</TD></TR><TR><TD CLASS="quote">could you still use a crx si booster and add on the civic ex mc?</TD></TR></TABLE>

I think the bolt pattern changed...

 

ex booster is an inch bigger . (9 vs 8)

 

the bolt patern on the 15/16 master will not fit onto the civic brake booster
you can also use the MC and BB from a 90 to 93 integra they are the same
as a 90 91 civic ex

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by rustyb16ef &raquo;</TD></TR><TR><TD CLASS="quote">the bolt patern on the 15/16 master will not fit onto the civic brake booster
you can also use the MC and BB from a 90 to 93 integra they are the same
as a 90 91 civic ex</TD></TR></TABLE>

i bolted an ex 15/16ths to the stock 91 crx si booster

 

so it should bolt up then...the civic ex mc...i have a 90 si rex by the way

 

Here they are next to each other, the rusty corroded one is the CRX stock booster (1990 Si) and the other is the 15/16" from a 1988 Prelude 2.0Si, on my car now:
MC compare 1
MC compare 2
And here's the booster, same bolt pattern on both.

 

Thanks for the pics. What about the proportional(spell check) valve? Thats just as important isn't it?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EF9ZC &raquo;</TD></TR><TR><TD CLASS="quote">Thanks for the pics. What about the proportional(spell check) valve? Thats just as important isn't it?</TD></TR></TABLE>

mhm. it is what provides the correct brake bias, so you want the one that matches your setup. 4040 from a non-abs 90-93 teg rs (right? i havent looked for one in a while).

i think tyson might have one for sale still

 

I found a civic ex with everything so im going ot use all that stuff. Should work out wonderfuly great

 

OK last question on brakes i promise. If i took all 4 hubs off the integra right what do i use for the e brake cables. Integras or should i try to find civic ex's

 

bump for repsonse

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by EF9ZC &raquo;</TD></TR><TR><TD CLASS="quote">OK last question on brakes i promise. If i took all 4 hubs off the integra right what do i use for the e brake cables. Integras or should i try to find civic ex's</TD></TR></TABLE>
EX does not have rear discs. Those ebrake cables will do you NO GOOD. The Integra will have everything you need.

 

The 88-91 EX sedan did not come with discs all around.

 

Thanks so now i got to get the integra proportional and cables

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by downest &raquo;</TD></TR><TR><TD CLASS="quote">
MC compare 2
</TD></TR></TABLE>

wait a second... that picture shows some serious difference in the plunger length and shoulder flange where it mounts the booster. are you telling me theres no effect to this? having a longer plunger also means the pedal will automatically have to depress further down. hmmmmm... but maybe thats intentional since the overall stroke will be less because of the great plunger area....

anyone else care to comment?

 

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

wait a second... that picture shows some serious difference in the plunger length and shoulder flange where it mounts the booster. are you telling me theres no effect to this? having a longer plunger also means the pedal will automatically have to depress further down. hmmmmm... but maybe thats intentional since the overall stroke will be less because of the great plunger area....

anyone else care to comment?</TD></TR></TABLE>

nope. it works and i don't care.

seriously though- i'm not seeing the shoulder difference. as to the plunger length, all i could do is speculate.

 

im kinda surprised you dont notice the difference in shoulders in the pic. theyre pretty well lined up, unless visually its deceiving. but i guess if it fits, its not a problem.

but yeah, the plunger length seems it would have some definate effect, positive or negative. i was just pointing that out.

 

yeah...i noticed the difference in the length also...but if he says it works...might as well and use it...

im not sure on which one i should get...the ex or the prelude mc

 

Tyson, you're right, they are lined up correctly, I did it when I took the pic. I'm not sure about the difference in length, but I can tell you my stock MC was leaking fluid, if that means anything. I don't really know, it may have not been out all the way. I know the new one works, and works well, and I know a lot of people have swapped these in without issues.