prop valve question
11-26-2005, 02:23 PM
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Re: prop valve question (silverxcivic)
You don't need it, I didn't replace mine on my 97 sedan and I have had no problems. Car stops on a dime when I did the complete brake upgrade.
11-26-2005, 05:30 PM
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Re: prop valve question (EL Vap133)
you might stop on a dime but when ur rear wheels lock in the rain or snow, u'll look real smart going down the road sideways in a ditch...Not sure which one to use sry im no use...But i'd get one if i were you
11-26-2005, 05:35 PM
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Re: prop valve question (deadend9009)
OMFG that is misinformation and a half......
deadend9009, you need to stop now and make sure that you know what you are talking about first.....take it as constructive criticism
deadend9009, you need to stop now and make sure that you know what you are talking about first.....take it as constructive criticism
11-26-2005, 05:41 PM
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Re: prop valve question (EL Vap133)
The proportioning valve for drum brakes allows the pressure to equalize before pressure is applied to all 4 wheels. When you have a caliper in the rear instead of a wheel cylinder then the pressure is not alleviated by a return spring on the drum brake pads. This means that no gap is lost from the pads and friction surface therefore there will not be a need for pressure equalization. Your stock prop. valve is an automatic unit and will be able to differentiate the difference and will have no adverse effect on braking. There will be no lag or acceleration in rear brake application like the rumors and misinformed indivuals will tell you.
There are tons of people in Honda Challenge racing with stock drum prop valves racing with 4 wheel disc. If the prop valve adversely effected the vehicle, none of them would even touch the stock unit, except to remove it.
the proportioning valve has nothing to do with pressure distribution.......in a hydraulic system all pressures equalize over time. The proportioning valve is designed to allow a quicker pedal response for drum brake vehicles by allowing the rear brakes to get the brunt of the fluid first to allow for the pads to make contact. As soon as there is resistance then the pressure through out the system equalizes immediately. Therefore, if you have very little to no gap (like every disc brake on a Honda) then you will have no deviation in pressures between the front and rear brake fluid distribution.
The prop. valve acts as an automatic orifice tube that senses pressure equalization. Once pressure throught the system is qualized then the porp. valve is nothing but a brake fluid passage.......that is it.
Do not confuse a Proportioning valve with a brake control metering valve. The metering valve (kinda like Wilwood's adjustable unit) is nothing but a controlled orifice that is not allowed to alleviate after pressure is equalized.
There are tons of people in Honda Challenge racing with stock drum prop valves racing with 4 wheel disc. If the prop valve adversely effected the vehicle, none of them would even touch the stock unit, except to remove it.
the proportioning valve has nothing to do with pressure distribution.......in a hydraulic system all pressures equalize over time. The proportioning valve is designed to allow a quicker pedal response for drum brake vehicles by allowing the rear brakes to get the brunt of the fluid first to allow for the pads to make contact. As soon as there is resistance then the pressure through out the system equalizes immediately. Therefore, if you have very little to no gap (like every disc brake on a Honda) then you will have no deviation in pressures between the front and rear brake fluid distribution.
The prop. valve acts as an automatic orifice tube that senses pressure equalization. Once pressure throught the system is qualized then the porp. valve is nothing but a brake fluid passage.......that is it.
Do not confuse a Proportioning valve with a brake control metering valve. The metering valve (kinda like Wilwood's adjustable unit) is nothing but a controlled orifice that is not allowed to alleviate after pressure is equalized.
11-27-2005, 08:21 PM
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Re: prop valve question (deadend9009)
Haynes manuals are crap and they do not include information about hybrid conversions.
The manual gives you symptoms and scenarios of what could happen if the spool valve in the valve sticks
The manual gives you symptoms and scenarios of what could happen if the spool valve in the valve sticks
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