Brake sensitivity with prop valve?
 

I have a 93 Si with Integra front discs, stock rears, and 91 EX Master Cylinder. The problem with the pedal travel went away when I got the bigger MC, but I noticed I have to push a little harder for the same amount of stopping power as before. How do I make my pedal more sensitive (lightly pushing brakes, but getting good braking results)? Someone told me a prop valve. Adjustable? Does mine have a 4040 stock? What do I need? Thanks in advance

Re: Brake sensitivity with prop valve? (TEGPOWER44)
 

anybody?

Re: Brake sensitivity with prop valve? (TEGPOWER44)
 

The proportioning valve doesn't do that. The diameter of the MC piston does what you're describing. Maybe you can find a larger vacuum booster to go along with your bigger MC?

Re: Brake sensitivity with prop valve? (JimBlake)
 

Do you mean a brake booster? if not, where is the vacuum booster located?

Ohh, what about steel braided brake lines? I heard that (helps the feel) whatever that means?

Re: Brake sensitivity with prop valve? (TEGPOWER44)
 

Try using the OE pads from Acura. If you have aftermarket pads on there now, I think you will nitice a big improvement. Has to do with the coefficient of friction rating that each brake pad has on it no matter who sells it. Look on the pads and you will see letters like...EE or EF or FF or GG.....first letter is stopping power cold, second letter is stopping power hot......EE is the weakest and GG would be the strongest. These are guidelines and are not etched in stone......nuff said...3gdude

Re: Brake sensitivity with prop valve? (3gdude)
 

cool, ill try that, thanks

Re: Brake sensitivity with prop valve? (TEGPOWER44)
 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by TEGPOWER44 &raquo;</TD></TR><TR><TD CLASS="quote">Do you mean a brake booster?</TD></TR></TABLE>Yes, that's what I meant. A smaller-diameter MC piston puts more force on the brakes, but needs more pedal travel to do it. So it makes it easier to feel the 'give' in the calipers, pads, or brake lines. A larger-diameter MC feels real stiff, but you need more pedal force to get the same braking power. A larger brake booster would push harder on the MC.

3gdude's point about the pad type is right, too. That can make a difference, & it's one of the trade-offs you take when you decide what kind of pads to get.

But mostly, I wanted to say that the proportioning valve isn't going to do what you want.

Re: Brake sensitivity with prop valve? (TEGPOWER44)
 

Try upgrading to an Integra 1" MC + booster.
Your soft pedal woes will soon be left behind. https://honda-tech.com/forums/images/smilies/emthup.gif

Re: Brake sensitivity with prop valve? (Katman)
 

I just did this 1" upgrade in my '92 CX. It isn't running yet so I can't talk about the results, but the install is a piece of cake. You do not need to reflare the ends...I'm not sure where that got started. I tried to take pics of the stock lines but they came out really poor with my digicam. In any case they are already double flared or "bubble" flared. I replaced one of the OEM lines that goes to the MC with a pre-flared lined from Advance Auto since their flaring tool sucks.
Total install takes about 20 minutes. Easy and cheap.