95 civic rear disc swap help.
 

I have a 95 civic that im about to do a rear disc brake swap. I have been reading that using an integra M.C. and brake booster is the best thing to do along with a 3030 proportioning valve. I have the rear trailing arms from the integra with all the goodies attached for the time being. My question is, i have a guy with a 94 civic si that he is trying to part out and get rid of so i was going to grab the M.C. and booster off his. Is the 94 si stuff the same as the larger integra stuff? If you could help me out i'll appreciate it. Thanks.

Re: 95 civic rear disc swap
 

You will have to look at the MC to see. it says on the side. some are smaller and some SI's have the 15/16th mc..

Do not worry about chaning the proportioning valve. Trust me on this. What size mc is in your car now? I had a 1 1/16th in mine.

They are a bitch to bleed if you dont know how to do the mc right.

Re: 95 civic rear disc swap
 

all you need is a MC from a car that has rear discs, but i actually used the one from a EX and it works just fine. so yes the Si one will work just fine.

Re: 95 civic rear disc swap
 

Yea i got an EX but the thing is didnt come with disc's on the back. I should have the 13/16" MC since i have drums. I was reading on hybridgarage.com that its recommened to upgrade the mc so the pedal wont feel like its going to the floor. They swapped on an integra mc with a 1" bore so its plenty bigger then what i got.

Re: 95 civic rear disc swap
 

anyone else have any helpful info.

Re: 95 civic rear disc swap help.
 

Not changing the proportioning valve is ridiculous. It's designed to divert brake fluid for drum brakes. Disc have such a smaller surface area that they need to exert more pressure to provide the same amount of stopping power.

Change both the MC and the prop valve. The SI is bigger and will work, but from personal experience the GSR MC and prop valve work best w/ the rear discs. An LS one will work, but I think it's the same as a Civic SI one, I can't remember.

Too bad you're not in Phx man, it's an easy install all around and I have this cool vaccuum pump that bleeds each corner perfectly.

Good Luck

Re: 95 civic rear disc swap help.
 

Before you talk out of your ass more, go test the drum pv and them tell me to change it.

Re: 95 civic rear disc swap help.
 

WTF is that supposed to mean? If there was no need to change it, Honda would have left it alone in the first place when they started using rear discs in cars.

I've done this swap with and without the MC and prop valve. If you want it done right, use the proper parts.

Re: 95 civic rear disc swap help.
 

I think your best bet is to use a 91 Civic EX master cylinder... it's 15/16 and bolts right up to your stock booster and brake lines.

Info here: http://honda-tech.com/zerothread?id=364783

I have read a bunch of opinions about whether or not to replace the prop valve. Some people say you need to, some say you don't. I've actually heard that the stock disk/drum prop valve directs more fluid to the rear than a 4040 integra unit because drums move more than disks. Therefore, if you upgrade to disks without changing the prop valve, the rear will get too much pressure and you are more likely to lock up the rears before the front, which could be very dangerous if it is mid turn.

I recently installed integra rear disks on my 1990 STD hatch. I also installed the 4040 prop valve and just yesterday upgraded from the stock MC to a 89 Prelude 15/16 MC. The larger MC made a big difference in pedal travel, it is now greatly reduced and the car stops really well.

Anyways...

Oh, make sure you bench bleed your MC before installing it so it doesn't take forever to bleed the system afterwards. I rigged up a bench bleeding system from some tubing I had lying around, worked great!

Attachment 34738

Good luck!

Re: 95 civic rear disc swap help.
 

I say the same thing!! A larger MC is a great feeling. The pedal is a little firmer, but work WAY Better. I did the same MC on my 90 hatch as well.

Re: 95 civic rear disc swap help.
 

I`ve also read about how i can use a 90 to 91 civic ex sedan MC on my 95 dx . but would it do anything if i am only upgrading the front and stay drum in the back? say if i am using integra caliper in the front with 11' disk

Re: 95 civic rear disc swap help.
 

why would you put on big front disc brakes and then have drum brakes in the rear, thats like having a girl with gigantic beautiful boobs with a flat ugly ass

Re: 95 civic rear disc swap help.
 

Hey tahnks again for everyones help. Like i said earlier im getting my swap in soon so hopefully i can get it knocked out soon. I think im just going to get that MC and booster from that guy i know and grab a PV so i can get everything done right the first time. O yea i also need to get some integra brake lines for the back so everything will bolt right up with no binding. So if anyone else has any good setups for a 95 civic rear disc swap like what master cylinder, proportioning valve,booster, etc use then keep the threads flowing. Thanks. :6

Re: 95 civic rear disc swap help.
 

I am still using my stock ex master cylinder with the bigger reservior, because some ------- sold me the wrong master cylinder, it was 7/8 but it was meant for a right handed drive car, so its useless to me. I am still looking for a master cylinder.

Re: 95 civic rear disc swap help.
 

LOL man that is so damn true. If your ride aint balanced your going to be in a world of hurt when you slam those brakes on.

Re: 95 civic rear disc swap help.
 

Hey man check out ebay people are always throwing good parts away.

Re: 95 civic rear disc swap help.
 

Yes installing a larger bore MC will help. Well, it will decrease pedal travel because it moves more fluid with less travel.

I've heard arguments that upgrading the front without the back degreses stopping distance significantly more than leaving the front stock and upgrading from drum to disk in the rear.

Who knows though. Rear disk setups are so cheap and easy to install, might as well get them.

Re: 95 civic rear disc swap
 

YEah because I just did this swap last week.

You will need the 40/40 prop valve from the integra, and you will need either the integra MC and Booster or go to a local junkyard and find a MC from any civic that came with rear disk brakes, weather its 1989-95 as long as it had rear disk brakes the MC will fit your stock Booster, the integra MC will not fit your stock booster therefore this is the reason you will need the integra Booster if you use the integra MC

Re: 95 civic rear disc swap help.
 

I am always ASSUMING the drum brake works better then disk brake, just look at how much bigger the contact area is compare to the tiny disc brake pad, and look at all these big rig that uses drums.
but what do i know :l

Re: 95 civic rear disc swap help.
 

The contact area has nothing to do with it, disk brakes are much stronger than drumb, the piston on a disk type setup has much more force than the shitty little drumb brake cylinder.

plus some cars have bigger pads in the front then they do shoes in the back, in reality a car does 80% of its braking in the front, but drumbs are so ------- ugly, and if youre like me and do hard stopping in reverse disk brakes are a must ;D

The big rigs use disk in the front also, and 4 drumbs in the back and 4 more on the trailer, this is also not your average hydraylic system, the massive air pressure generated has something to do with it.

Re: 95 civic rear disc swap
 

Hey thanks dude i just picked up a 94 si booster and master cylinder for like $30 so i can just swap what i need onto my car. I still need the brake lines and the valve but i'll be getting those soon. Thanks for the help again.