most people that change rear disk on crx go with 90-93 integ setup. so a change in prop valve is a must (most say 40/40) . i own a 91 hf and 91 si. i just decided to avoid the possible camber hassles and instead put on good ole 91 crx Si disks. basically made the si an hf and vice verse. some would say that i would need to change MC or prop at all. but the si's prop was 25/30. is this bad? im aware that even the slightest amount or air in the system will make it mushy. but funny thing is, while im driving, the pedal will be firm as a rock and only sometimes will the pedal get mushy. is that typical for a bad bleed job? i also thought maybe im sucking in through the brake lines where i changed prop and rear brake lines. but ive tightened themas much as possible. every shop in las vegas gives me a different answer, and they all sound stupid as hell. i dont know what to do!!

 

i'm going through somewhat of the same deal. i put all 90-93 intg. breaks my 90 std. hatch due to the b-series swap. we bleed the **** out of the lines and it was fine for awhile. now once and awhile the pedal is very soft. i think the master cylinder is bad. i'll be checking it out hopfully this weekend.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by infested &raquo;</TD></TR><TR><TD CLASS="quote">most people that change rear disk on crx go with 90-93 integ setup. so a change in prop valve is a must (most say 40/40) .</TD></TR></TABLE> The prop valve isn't a must, unless you switch to the whole Integra Brake system --&gt; Front, rears, MC/Booster. I forget who, but someone in the RR forum settled this.
<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by infested &raquo;</TD></TR><TR><TD CLASS="quote">im aware that even the slightest amount or air in the system will make it mushy. but funny thing is, while im driving, the pedal will be firm as a rock and only sometimes will the pedal get mushy. </TD></TR></TABLE> To me that sounds that there is some air in the lines somewhere.

 

^^^^^I second that. I did the rear swap from a 91 CRX into an 88 and DID NOT swap prop valves. I do some street drag, and spirited driving, and never had a problem. Here are the components in their entirety:

Stock size fronts
stock size rears
Hawk pads all around
Brembo blanks all around
Stainless lines all around
rear disc off of 91 Si
all new energy suspension bushings

The brakes were rigid, strong, and never locked up the rears before the fronts. In fact, the couple times I did lock up (once the tires got weak) all four locked, from what I could tell, around the same time.

Hope this helps!

 

is it correct to say that you at least need a prop valve from a car that has rear discs, but not necessarily the 40/40? or are all rear disk prop valves 40/40?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicandy &raquo;</TD></TR><TR><TD CLASS="quote">is it correct to say that you at least need a prop valve from a car that has rear discs, but not necessarily the 40/40? or are all rear disk prop valves 40/40?</TD></TR></TABLE>

I would like to know this as well.

 

Typically, you need more fluid running to the caliper if you were previously running drum brakes in the rear, they don't require as much fluid to operate as the Si or DA's disks.

I have DA brakes all the way around on my 89 HF
- 90 Front and 90-93 Rear
- 4040 prop valve(Tyson )
- Resurfaced rotors
- Hawk HPS pads

I still need MC/Booster, alothough pedal travel isn't that bad after bleeding forever.

I think in cases like this,

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by autotechniques &raquo;</TD></TR><TR><TD CLASS="quote"> I did the rear swap from a 91 CRX into an 88 and DID NOT swap prop valves. I do some street drag, and spirited driving, and never had a problem. Here are the components in their entirety:

Stock size fronts
stock size rears
Hawk pads all around
Brembo blanks all around
Stainless lines all around
rear disc off of 91 Si
all new energy suspension bushings

Hope this helps!</TD></TR></TABLE>

You wouldn't need to get the 4040 because the difference between the STD models and the SI's prop valve is minimal for the rears. 5 ppm(?) difference.

SI - 2530
HF - 1725
DA - 4040

If you were to put the SI's front brakes on a STD model, you would need to get the prop valve from the SI. Pretty much stay with the same OEM ratios. If you are pushing 5ppm more to the rear drums, that would only increase the efficiency of the drums.

 

Ok, so would it be better to get the 4040 ppv with the si rear discs if you have access to one?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by QuarterMileMaster &raquo;</TD></TR><TR><TD CLASS="quote">Ok, so would it be better to get the 4040 ppv with the si rear discs if you have access to one?</TD></TR></TABLE>

You have ann 88 (STD) model? If so then the SI prop valve would be the correct one if you have the SI's rear disks and the STD front disks. The difference in the front makes me wonder though.....

You would only need DA's 4040 with the entire DA brake assembly.

 

Well, I'm a different guy than the one who started the thread. I have a 90 Civic Hatch Si. I'm getting rear discs off of a 91 crx si. So would the ppv that I have already be ok or should I take the one off the crx with the discs or would the breaks perform better with the 4040 ppv? Basically, I want to know which will perform the best, I don't care about which is easiest.

 

I dont know which prop valve it comes with, go look and see what numbers are on it....

4040 will work for what you have. You would need a 4035 exactly for your application, although i don't know if it exists....

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by civicandy &raquo;</TD></TR><TR><TD CLASS="quote">is it correct to say that you at least need a prop valve from a car that has rear discs, but not necessarily the 40/40? or are all rear disk prop valves 40/40?</TD></TR></TABLE>

You dont NEED the prop valve. Of course it is ideal to have the proper proportioning valve correct for your particular set up.

Not all cars w/ rear disc have the same prop valve.

Speaking from personal experience, I currently have EX front brakes (10.2") and crx si rear disc. I am still running the stock hatchback dx m/c and prop valve. My brakes feel fine to me. I do have the EX m/c and 40/40 valve waiting to go in (im lazy). I am going to be using the 40/40 since i have the Integra size front brakes.

 

I dont know which prop valve it comes with, go look and see what numbers are on it....

 

goddam it you ppl. its 4040, not 40/40. 40/40 is a NY club. 4040 is a proportioning valve.

90-91SI - 2040
HF/DX - 1725
DA - 4040
DX/LX Sedan - 3030
EX Sedan - 3540

http://www.norcalcrx.org/tyson/brakepartslist.xls

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fourthgenhatchB17 &raquo;</TD></TR><TR><TD CLASS="quote">

You dont NEED the prop valve. Of course it is ideal to have the proper proportioning valve correct for your particular set up.

Not all cars w/ rear disc have the same prop valve.

Speaking from personal experience, I currently have EX front brakes (10.2") and crx si rear disc. I am still running the stock hatchback dx m/c and prop valve. My brakes feel fine to me. I do have the EX m/c and 40/40 valve waiting to go in (im lazy). I am going to be using the 40/40 since i have the Integra size front brakes.</TD></TR></TABLE>

I've got the exact same setup as this guy except I have my EX m/c installed already. So the 4040 would be best for this setup?

 

yup, I would get a second opinion tho....

*DISCLAIMER*

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">goddam it you ppl. its 4040, not 40/40. 40/40 is a NY club. 4040 is a proportioning valve.

90-91SI - 2040
HF/DX - 1725
DA - 4040
DX/LX Sedan - 3030
EX Sedan - 3540
</TD></TR></TABLE>

I did it right!!!

 

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

I did it right!!! </TD></TR></TABLE>

So did I!!

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Tyson &raquo;</TD></TR><TR><TD CLASS="quote">goddam it you ppl. its 4040, not 40/40. 40/40 is a NY club.

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

Its not that BIG of a deal!

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

I've got the exact same setup as this guy except I have my EX m/c installed already. So the 4040 would be best for this setup?
</TD></TR></TABLE>

I would think so, since its pretty much the exact same set up that the 90-93 Integra comes with from the factory, minus the bigger booster.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fourthgenhatchB17 &raquo;</TD></TR><TR><TD CLASS="quote">

Its not that BIG of a deal!

I would think so, since its pretty much the exact same set up that the 90-93 Integra comes with from the factory, minus the bigger booster.</TD></TR></TABLE>

Excellent. Thanks.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by fourthgenhatchB17 &raquo;</TD></TR><TR><TD CLASS="quote">

Its not that BIG of a deal!
</TD></TR></TABLE>

great. ill just enjoy my CR/X.

 

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

great. ill just enjoy my CR/X.</TD></TR></TABLE>

I think i have v/tech i'm not sure what wire do you hook up?


Thats what would happen if it wasn't a big deal....

EDIT***

I am a culprit of this obscenity also, but we learn from our mistakes....

I just recently found a post of mine 3 days after i joined asking:

"Buddy Club front bumper....... cant find bump lights!!!!!!"

lol


Modified by Lost_in_a_world_so_cold at 2:52 PM 7/18/2006

 

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

I think i have v/tech i'm not sure what wire do you hook up?

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

good one.

 

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

good one.

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

sarcasm? cant tell with you....

 

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

sarcasm? cant tell with you....</TD></TR></TABLE>

it was a good example of using the proper spelling of a term that doesnt make you sound like an utter noob.

how many times have ppl gotten jumped on for saying "vtech" around here.
https://honda-tech.com/zerothread?id=1294573
https://honda-tech.com/zerothread?id=921189
https://honda-tech.com/zerothread?id=496216
https://honda-tech.com/zerothread?id=1177578

http://img126.imageshack.us/im...c.jpg

tell them "its not a big deal".