ABS proportioning valve?


J

JDM_GUY

Member
Joined
Jul 13, 2010
Messages
92
I have a honda civic hatch LEV that came rear drum.

I converted the system to DC2 97 front and rear disc brakes, also changing the master and booster with a 1".

The question is do i need to swap the proportioning valve to a EK9 or EK4? my car has ABS. All i can see going to the valve is 2 hard lines from the ABS pump and 2 coming out heading to the rear of the car.

In addition I had someone depressed the brake peddle and using a power handle I could not get the front wheels to turn but i can get the rear wheels to. I was shocked. The car was turn on simulating real driving conditions.
 
Last edited:
Yes you do need the right valve. Discs need more (a lot more) pressure to output the same force as drums, so a drum prop valve will be rendering the rear brakes effectively useless, as you've just found out.

An EK9/EK4 valve would be better, but an adjustable one would be the best by a long shot.
 
Is it the same for ABS equipped cars? I only have the rear lines coming from the valve on the firewall. The front lines come directly from the ABS pump.
 
You will need a valve from an ABS car, yes.

The non ABS ones will split front and rears, so they have 6 ports.
 
Ok. thanks for the reply. Now how do i tell if it is from a EK9/EK4? By the part number?
 
It is so hard to get a ABS EK9 valve to buy. And i know the none ABS cannot work because it has 6 lines on it.

I dont know why I was not living in the UK so I can just get a real R for everyday.
 
When doing a rear disc conversion on ABS drum brake Honda civic, you need the proportion valve part number 46210-s04-852.
A link to the part online:

http://www.hondapartsnow.com/genuine/ho ... 4-852.html

On local Honda civic 97-98 SiR it has a H at the end, and on 99-00 SiR it has a L at the end. On the drum cars it will most likely have G at the end. Thats what mine had anyways.

The drum brake valve sends only 30% to the rear and the disc sends 40%.

Here is a read up on it:

http://forums.beyond.ca/showthread/t-365650.html

Honda brake experts, need prop valve info - beyond.ca car forums community for automotive enthusiasts
 
Last edited:
You must log in or register to reply here.
Back
Top