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View Full Version : Lets talk brake conversions a second.


thebluesky
06-11-2008, 02:23 PM
I have an ef that I did a brake swap on. It has a da brake swap, da brake booster, braided lines, upraded pads, upgraded rotors. To me, it still feels way soft compared to my other cars, including my stock 1g dsm in that it doesn't feel as responsive. Now, I have heard of people swapping master cylinders from other hondas. My question is, is this really of any benefit and if so what are my options?

wbaldwin_86
06-11-2008, 03:12 PM
get a 1inch master cylinder... and make sure your brakes are bleed properly

wbaldwin_86
06-11-2008, 03:14 PM
damn where is the edit button? i am not sure if they will work on a ef... the 1inch came from the type r and gsr

dsm king
06-11-2008, 03:25 PM
do you have the right proportioning valve on it?

sirtef9
06-11-2008, 04:04 PM
Jon, I ran the 92 gsr mc, and bb with 92 si prop valve. Shit stops on a dime with out pressing it to the floor. Maybe try to bleed more or I got a BraKe bleeder that hooks up to your air compressor for best results. You can use if needed, like DSM king said did you swap your Prop? (haha that rhymed)

thebluesky
06-11-2008, 04:49 PM
Okay, I had to look up what you were talking about and I realized what I was calling the brake booster is what is referred to as a proportioning valve. I did change that and not the actual booster.

My other friend also thinks I may still have some air in my lines, so we're going to re-bleed them This weekend after I install the camber kit. But prior to me upgrading the discs, pads, and lines, to me the brakes still did not feel that responsive to me. Of course, it could just be due to the fact that I'm used to better brakes.

Couple more questions. Now that I can verify the DA will fit, will a later model fit as well? Is the 92 GSR MC different than the LS, or are they the same part?

thebluesky
06-11-2008, 04:51 PM
God, I miss the edit button. My other question is does the MC really make that much more of an improvement?

Skaterkid
06-11-2008, 05:25 PM
Yes. As your MC diameter increases, it stiffens up the brakes.

HPHP80620
06-11-2008, 05:47 PM
1992-1993 RS Integra NON ABS brake master 15/16th and it will hook right up to your lines, and is larger enough to keep the pedal up passed half way BUt some EF need to change the booster too. You will need one off an LX OR EX OR and Interga

thebluesky
06-11-2008, 06:08 PM
1992-1993 RS Integra NON ABS brake master 15/16th and it will hook right up to your lines, and is larger enough to keep the pedal up passed half way BUt some EF need to change the booster too. You will need one off an LX OR EX OR and Interga

What should I be expecting to pay for these parts?

HPHP80620
06-11-2008, 08:46 PM
Autozone has the master ( very hard to find used) and salvage yards have the booster

thebluesky
06-12-2008, 07:59 AM
Thank you, everyone, for your insight.

HPHP80620
06-12-2008, 08:55 AM
good luck !

Brandon
06-12-2008, 09:07 AM
Yes. As your MC diameter increases, it stiffens up the brakes.

Paint me green and call me Gumby but i think the opposite is true. As the MC diam. increases the pressure in the brake line decreases.

HPHP80620
06-12-2008, 09:12 AM
Paint me green and call me Gumby but i think the opposite is true. As the MC diam. increases the pressure in the brake line decreases.
It really has to do with volume , not pressure

Brandon
06-12-2008, 09:29 AM
Elaborate. Your statement doesn't say anything.

Are you saying that pressure in the system doesn't effect the amount the caliper grips the rotor?

HPHP80620
06-12-2008, 09:39 AM
Elaborate. Your statement doesn't say anything.

Are you saying that pressure in the system doesn't effect the amount the caliper grips the rotor?
I refeing to petal "feel" and height.A larger diameter master delivers more volume during the stroke.The real problem with disc swaps is the rear caliper pistons' diameter is much larger (requiring more volume) than the small drum wheel cylinder. Each system that Honda set-up is matched with this in mind.. An Example would be Em1 SI vs GSR front brake calipers..they are not the same. The GSR calipers have a larger diameter piston with nessitates more volume, SO , a GSR 1" master vs. Si 7/8 master even though both are four wheel discs..

HPHP80620
06-12-2008, 09:43 AM
the only way to increase pressure in the system is to apply more pressure with your foot OR to increase in surface area of the cylinder vs. the brake master will effect the pressure of one systen vs. the other IE 4wdb and rear drums..etc..