JPerkMr954

I needed to find out are the rotors larger on the em1 then the standard civic coupe?
I was thinking about purchasing a whole front knuckle, but if there is no difference, I can just replace the parts that I need on my car...

civichxtreme2

Yes and no- The EM1 and the ex coupe have the same brakes, the DX LX and HX have smaller rotor setup.
The knuckle on the SI and EX are the same, the others models are different

98civdx

What civic do you have? ^ he pretty much covered it.

EX/SI both have 10.3" where the others have 9.6"

JPerkMr954

I have an ex.... So then I dont need to get a whole new knuckle...

As for the rears, the SI was disc if Im not mistaken... I heard the conversion isnt too involved.. but people speak of using integra parts, Is there a thread that tell you what you need or the interchangability of brake parts?

98civdx

EX/SI are the exact same, so no. You won't see any upgrade or down grade.

For the rear disk you really can use any 92-00 civic or 94-01 intgera. Sedan, coupe, hatch doesn't matter.

Deetz

It's true, the swap is pretty simple, but....

It would be for looks only, there won't be any added performance

98civdx

Drums look like poo poo

civichxtreme2

Just get some high quality pads and that will honestly be the most difference you will see without upgrading to a big brake kit

JPerkMr954

So going rear disc isnt going to give much performance difference? I see.. I thought it would..

Libertariat

Idk, I've heard people swear by rear brake upgrades. Lots of people in the oem brake upgrade community praise the integra to -> Ep3 rotor/RSX caliper rear upgrade that is a direct bolt on for integra trailing arms.

Big rear rotor and caliper upgrade. I can only guess there's either a belief or an actuality that rear brakes are a cause for excitement. Fastbrakes, wilwood, etc all sell rear brake upgrade. Some braking performance has to come from back there.

phat00civic

I did a swap on my EX with an SI rear and it made a huge difference. Well worth the money!

Deetz

I'm sure the pedal difference feels huge, but in reality, performance would be pretty much the same. Don't forget, "80%" of the braking is done in the front end of the car...there is little to be had in the rear

98civdx

I heard they make a difference, but at the end of the day it's only word of mouth.

I'll be doing it, but only becuase I got a stupidly good deal, and I don't like how drums look..

Libertariat

Same, I managed to get integra rear trailing arms for $150, sold the lines for $30 shipped and the LCAs that came with them for $50 shipped, haha.

Deal of the century

And when I've got money to throw around I'm totally getting some RSX rear calipers and EP3 rear rotors. 1-2" bigger rear disc and stronger caliper.

98civdx

^nice.
I got complete si front breaks,with sway bars, lca's. Prop valve, mc, rear disk, with all arms,sway bars ect. for 200. Sold some stuff, now I have $175 in it.

Libertariat

Wow, beats my deal

phat00civic

Yes correct but if you change the brake distribution to the one in the SI more braking is done in the rear. I forgot off the top of my head the specifics but I think the EX has 10% rear and the SI is 20%, but whatever the number is, the SI is 10% more so there would be a performance factor to it if you swap out the prop valve.

http://cgi.ebay.com/ebaymotors/99-00...item2c5cf6df08

Libertariat

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

If they didn't all share the same part number a drum prop valve would increase the braking in the rear more.

Drums use significantly more fluid and pressure than discs do.

Rikature

As far as the rear disc conversion goes, I don't know if anyone has had to replace drums and shoes, but it's a huge nightmare. I would convert to disc just for how much easier it is to replace the worn out brakes.

98civdx

haha, Yea I was pretty happy with that deal!.

EX/SI also both share the same MC.

JPerkMr954

So what exactly is needed to go rear disc on an EX coupe?

Libertariat

Integra or Civic Si rear trailing arms. Complete.

It's preferable to use 99-00 Si e brake cables, but you can make integra cables work.

Deetz

by adding rear disk, you also add weight to the car

EJ8_Man

I'm not sure if I agree with that. Have you measured stopping distance of two Civics, same trim, same tires, one with rear disks and the other rear drums?

Deetz

I have with my crx...i added about 36 lbs to the car when i did the conversion. It works, but no gain (looking back, i regret wasting my time with it)

Funny, being i have so much info on crx's the 89 model with rear drum, actually stopped shorter, than the newer 1990 model with disk, lol

There has been many threads about rear disk conversions, and it has been argued to death in the past. Basically, everyone who loves the conversion, does it for looks....then argues it's easier the change rear pads (but that is funny, because you can go 100,000 miles on one set )

I have an EM1 with disk all around. It works better than the 96 cx hatch used to have, but that is because the front rotors are larger