ABS EK with non ABS 5 stud conversion


N1EK4

N1EK4

New Member
Joined
May 29, 2016
Messages
5
Hey guys, I recently did a 5 stud conversion on my ek4. The thing is, my car is equipped with abs, the conversion isn't.

I did a good amount of research before doing the conversion but i couldn't find any.

Anyways, so I started with the rear trailing arms and brakes. Once bolted on, I bled the brakes and noticed the pedal was very spongy and didn't feel like it had any force, the pedal literally just sunk to the floor as if I had a burst brake line.

I checked for leaks, everything checked out good. Can't think of anything that could cause this other than the abs system affecting the brakes?

The thing is, The brakes are engaging but it's very weak. As I depress the brake pedal, it'll just sink down untill the very bottom I can feel the brakes engaging.

My set up:
98 DC2 front and rear hubs/spindle
EP3 front calipers, rotors and pads
DC5 R rear calipers and pads
CL7/9 accord rear rotors
 
Stock MC.

I was told I may need to change the master cylinder after I encountered this problem.
 
As above 1" mc should sort it out abs won't have any impact on this other than the light staying on if you have it connected.
 
Thanks for the replies guys, I upgraded my booster and master cylinder from an early model integra type r.

Bench bled the master cylinder before installing it, once fitted. I got a mate to press the brakes to bleed the master cylinder some more. I then continued to bleed the calipers, furthest from MC to the closest.

Noticed the pedal was still soft. I clamped off the rear brake lines. Pedal felt great, like it should be. Clamped off the front brake lines, pedal went soft.

Thinking there's something up with the rear calipers but no clear answers yet.

Really bugging me now :(
 
Do you know the piston size in the dc5r calipers compared to stock? If the piston is larger this will be your problem. Tbh
I've never heard of anyone doing this on an ek civic before and that's because the rear brakes are perfectly fine at 260mm and stock calipers.
 
jesse888 said:
Do you know the piston size in the dc5r calipers compared to stock? If the piston is larger this will be your problem. Tbh
I've never heard of anyone doing this on an ek civic before and that's because the rear brakes are perfectly fine at 260mm and stock calipers.
Click to expand...

From my stock calipers to the dc5 type r calipers. I'd say the dc5 calipers are bigger. If I used my stock calipers, wouldn't I have to leave the rears 4 lug?
I got the dc5 calipers because they were easier to find. I couldn't find anyone selling a 96-00 ctr or 97-01 itr rear caliper.
 
It's the piston size that's important in this case. The bit that slides out of the caliper to push the pads I to the disc.
Either a quick Google or measure your own (tape measure will do)
If the piston is a larger capacity then it will take more fluid to move it. More fluid means more pedal travel.
 
jesse888 said:
It's the piston size that's important in this case. The bit that slides out of the caliper to push the pads I to the disc.
Either a quick Google or measure your own (tape measure will do)
If the piston is a larger capacity then it will take more fluid to move it. More fluid means more pedal travel.
Click to expand...

Yea that sounds about right, I'll measure up my callipers sometime this week.
 
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