So I am slapping a set of rear disk brakes on my 88 dx crx, getting Teg front brakes, what prop valve can I use? Are they all compatible? Thanks!

 

You can use 90-93 integra. The 4040 prop valve that comes on all wheel disc, distributes the pressure evenly over all 4 wheels.

The 4030 prop valve that you have on the car sends more pressure to the rear. Now here is the question?

Do you want the same pressure on all 4 corners or would you like to have the rear of the car planted a bit more under heavy braking?

I personally use the 4030 valve, because I like the rear a little more planted.

This only works with disc brakes on the rear with the 4030 prop valve.

Just FYI

 

Good info. I'm going to be doing the same thing to my rex.

 

The Stardard Si Prop valve might be the way to go. The rear is still a smaller solid disc so it does not have the braking performance the front carries. PLUS the car should generally have more braking towards the front of the car because that is where the weight is under braking... thus the front wheels have more traction..thus more brakes can be applied.

 

Not all CRX Si's are rear disc brakes though, correct me if i'm wrong but aren't only the '90 and '91 CRX Si's rear disc. As where the '88, '89 CRX Si's are rear drum.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by UNDER PRESSURE &raquo;</TD></TR><TR><TD CLASS="quote">Not all CRX Si's are rear disc brakes though, correct me if i'm wrong but aren't only the '90 and '91 CRX Si's rear disc. As where the '88, '89 CRX Si's are rear drum. </TD></TR></TABLE>

Correct, only 90-91 CRX si's had rear disk brakes in the U.S.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by BdoubleU &raquo;</TD></TR><TR><TD CLASS="quote">The Stardard Si Prop valve might be the way to go. The rear is still a smaller solid disc so it does not have the braking performance the front carries. PLUS the car should generally have more braking towards the front of the car because that is where the weight is under braking... thus the front wheels have more traction..thus more brakes can be applied.</TD></TR></TABLE>

No one said anything about the front being under less pressure just because of the prop valve. reguardless if you have the 4040 or 4030 they both give the same amount of pressure to the front.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FURBALL B-16 &raquo;</TD></TR><TR><TD CLASS="quote">

No one said anything about the front being under less pressure just because of the prop valve. reguardless if you have the 4040 or 4030 they both give the same amount of pressure to the front.</TD></TR></TABLE>

its called a proportioning valve for a reason.

lets just think about the name and what you just said.

 

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

its called a proportioning valve for a reason.

lets just think about the name and what you just said.

</TD></TR></TABLE>


maybe.. I dunno..

 

a proportioning valve does just that.

controls the brake bias front to rear thru a valve , it takes "X" pressure from one corner and gives "Y" pressure to the opposite corner.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Doctor CorteZ &raquo;</TD></TR><TR><TD CLASS="quote">a proportioning valve does just that.

controls the brake bias front to rear thru a valve , it takes "X" pressure from one corner and gives "Y" pressure to the opposite corner.

</TD></TR></TABLE>
No but see what he is saying is the 4040 gives 40% braking to the front and 40% to the rear and the 4030 gives 40% to the front and only 30% to the rear.

However I dont understand his first post by saying the 4040 give equal amounts to all corners (That I understand) but how would a 4030 give MORE pressure to the rear?? That would be LESS than a 4040??

*EDIT* Also the prop valve proportions it from front to rear NOT corner to corner.

 

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

its called a proportioning valve for a reason.

lets just think about the name and what you just said.

</TD></TR></TABLE>

I understand that PROPORTION stands for A relationship between things or parts of things with respect to comparative magnitude, quantity, or degree and To adjust so that proper relations between parts are attained.

The front has less pressure when needed and so does the rear, The prop valve or PROPORTIONING valve main purpose is to control pressure to front and rear of the car.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FURBALL B-16 &raquo;</TD></TR><TR><TD CLASS="quote">No one said anything about the front being under less pressure just because of the prop valve. reguardless if you have the 4040 or 4030 they both give the same amount of pressure to the front</TD></TR></TABLE>

thats the statement that is incorrect.

 

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

thats the statement that is incorrect.

</TD></TR></TABLE>

So then please tell us so that once again I can be corrected and not give out false information.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FURBALL B-16 &raquo;</TD></TR><TR><TD CLASS="quote">

So then please tell us so that once again I can be corrected and not give out false information. </TD></TR></TABLE>

look UP.

 

You could

just scratch it all and get an adjustable prop. valve....
throw in some new lines and call it a day...then adjust to you liking...
depending on class rules..

or does that make things too difficult..

 

How about you say it for the jackass in the room that do not know what post you are refering too.

ME

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Vinceg99 &raquo;</TD></TR><TR><TD CLASS="quote">However I dont understand his first post by saying the 4040 give equal amounts to all corners (That I understand) but how would a 4030 give MORE pressure to the rear?? That would be LESS than a 4040??</TD></TR></TABLE>

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

 

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

just scratch it all and get an adjustable prop. valve....
throw in some new lines and call it a day...then adjust to you liking...
depending on class rules..

or does that make things too difficult..

</TD></TR></TABLE>

I'm not talking about what I "could" do.

I was answering a post above , has nothing to do with my car.

 

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

just scratch it all and get an adjustable prop. valve....
throw in some new lines and call it a day...then adjust to you liking...
depending on class rules..

or does that make things too difficult..

</TD></TR></TABLE>

OK just get out

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by FURBALL B-16 &raquo;</TD></TR><TR><TD CLASS="quote">

OK just get out </TD></TR></TABLE>

done.

 

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

I was answering a post above , has nothing to do with my car.</TD></TR></TABLE>


LOL....not a very happy couple of responses...I was just suggesting another solution...

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Outsane &raquo;</TD></TR><TR><TD CLASS="quote">
I was just suggesting another solution...</TD></TR></TABLE>

ok , thanks for the suggestion.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Outsane &raquo;</TD></TR><TR><TD CLASS="quote">LOL....not a very happy couple of responses...I was just suggesting another solution...</TD></TR></TABLE>
LOL!! Yeah but see your not helping ther argument your adding to it!!...lol...Man you shoulod know better!!

 

yeah but come on vince you know I could not help it...

Truthfully...

I have done a rear disk swap....and before and after the addition of the "disk" prop valve I noticed no difference...

I am on my second CRX that has been upgraded to rear disks, and I have no idea if the prop valve is for disk or drum...

and I am not too worried about it... I keep my braking to the straights anyhow..