TORTUGA

Hey guys, so I recently installed a set of GSR rear disk brakes onto my 96' Hatchback and after I had installed it and everything, I noticed that the brake pedal felt a little different (went further down to the floor before it would actually start braking). Once I had installed everything, I bled the brakes and brought the car down off of the jack stands. I've been driving the car for a while already and iv'e noticed that the rear rotors don't have much wear from the pads, (as if it's not putting enough pressure?)

My question is, why does the brake pedal feel different and why aren't the rear rotors getting any wear from the brake pads?

I would really appreciate it if anyone gives me some help with this, Thanks.

P.S: I'm running the oem brake booster/master cylinder from a 96' Hatchback, as well as the prop valve.

98civdx

did you bleed all 4? Get all the air out?

TORTUGA

Yes I did bleed all 4

DCRB

did you replace your proportioning valve when you did the swap? you'll need one from an si coupe for direct fitment or you can use a 4040 prop valve from a non abs integra if you don't mind bending lines

TORTUGA

^^^No I didn't replace the prop valve. How much do they go for brand new from Honda? A 99' Si one?

98civdx

the DX hatch shares the same prop valve as the SI.

TORTUGA

^^^Does it really??

98civdx

Yes.

Part numbers are the same.

46210-S04-952 VALVE ASSY., PROPORTIONING 1998 INTEGRA RS
46210-S04-902 VALVE ASSY., PROPORTIONING 2000 CIVIC CX Hatch
46210-S04-902 VALVE ASSY., PROPORTIONING 2000 CIVIC DX Hatch
46210-S04-902 VALVE ASSY., PROPORTIONING 2000 CIVIC DX Coupe
46210-S04-902 VALVE ASSY., PROPORTIONING 2000 CIVIC HX Coupe
46210-S04-902 VALVE ASSY., PROPORTIONING 2000 CIVIC SI Coupe
46210-S04-912 VALVE ASSY., PROPORTIONING 2000 CIVIC DX Sedan
46210-S04-912 VALVE ASSY., PROPORTIONING 2000 CIVIC DX-V Sedan
46210-S04-912 VALVE ASSY., PROPORTIONING 2000 CIVIC LX Sedan
46210-S04-922 VALVE ASSY., PROPORTIONING 2000 CIVIC GX Sedan
46210-S04-962 VALVE ASSY., PROPORTIONING 2000 CIVIC EX Coupe

kyden

did you bleed it in the correct order?

TORTUGA

^^^ What's the correct order? O.o

TORTUGA

Am I gonna have to run a different master cylinder when I put the 40/40 prop valve?

EGRhatch

you dont HAVE to, but pedal feel will be better if you do. def. put the 40/40 on and a 15/16, 7/8 or 1" MC

bleed sequence
(pass rear, driver rear, pass front, driver front.)

TORTUGA

^^^What model/year master cylinder would you recommend?

speedjunkie_g35

https://honda-tech.com/forums/suspension-brakes-54/brakeexperts-brake-chart-thread-civic-brake-upgrades-ef-eg-ek-integras-3044628/

EGRhatch

98-01 GSR and ITR = 1"

99/00 SI = 7/8"

98-01 Integra LS = 15/16"

anyone of these will be fine for your setup and if you plan on upgrading front brakes in the future.

the key to getting a new MC is making sure it will bolt up to your current booster, so you don't have to buy a new booster as well, as some of them (boosters) will stick out further than your stock one and cause the MC to sit very close to the shock tower as well as the hard lines not lining up. (bending them to fit is totally fine though)

also from what I've seen my stock 13/16 MC bolted on at an angle (\) the SI I upgraded to sat level (-) so I had to use the SI booster and bend my lines out a little.

^^^ that thread is awesome and has all the info you'll ever need, just take the time to read it and you'll come out ahead.

kyden

98+ LS is 1". rs has a 15/16. 98+ integra and 99-00 si should bolt up, no bending of the lines.

Tkrizz

iTrader: (2)

You shouldn't need a master cylinder for a rear disc swap only and as 98civicdx stated the prop valves are the same. Do yourself a favor and save the money.

98civdx

Upgrading the MC is not needed for rear disk.

TORTUGA

^^^I've heard that upgrading the MC will give you a better brake pedal feel O.o true?

speedjunkie_g35

Yes it will reduce the amount of pedal travel needed to stop. The larger the mc the more fluid capable of being pushed through the brake lines.

TORTUGA

Okay so I went on hondapartsunlimited.com and I noticed that the proportion valve part number off of a 96' Civic Hatchback CX is the same as the one off of a 99' Civic Si, how does that work? O.o
I drive a 96' Civic Hatch CX

kyden

because brake bias is the same, same reason why the ex has a different valve.

Marvin1985

iTrader: (5)

You only need an SI MC to reduce pedal travel

TORTUGA

Okay so technically the Si prop valve is different than the CX one? They just have same part numbers?

zerovandez

iTrader: (1)

You're confusing yourself. Stick with your prop valve, and get n Si Master Cylinder.

On my 97 Hatch, I went with a GSR Master Cylinder and Brake Booster. Might be overkill or what not but it works and feels great.