 Brake proportioning pressure regulator, Where the heck is this thing? |
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| ratrustle |
 Aug 27 2005, 08:51 PM
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#1
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Newbie  Group: Members Posts: 27 Joined: 6-June 05 From: Olympia, WA Member No.: 4,213  |
I'm only 44 so both me and the car outa be hard (it's the car that has the problems).
I'm stumped! I just replaced all the brake parts on my car... Lines, calipers, pads, and rotors. I have bleed the lines like Eric's articles says to do and adjusted the rear calipers (.004). Everything has gone real smooth -- except for one thing. I still have a mushy pedal. I have bleed the lines 3 different times starting with the RR, LR, RF, LF and doing the bottom bleeder first on each caliper. I have read the threads about adjusting the proportioning valve. The Haynes manual calls it the Brake Pressure Regulator? The problem I'm having is that I can't find the darned thing! Where is this thing? Is it possible I don't have one and have done something else wrong? Any help, pictures, etc. would be real helpful. |
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| URY914 |
Aug 27 2005, 09:07 PM
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#2
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I built the lightest 914 in the history of mankind. Group: Members Posts: 126,350 Joined: 3-February 03 From: Jacksonville, FL Member No.: 222 Region Association: None |
It is in front of the engine, behind the driver's seat, on the lower firewall. You can only get to it from under the car.
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| Allan |
Aug 27 2005, 09:41 PM
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#3
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Teenerless Weenie Group: Members Posts: 8,373 Joined: 5-July 04 From: Western Mesopotamia Member No.: 2,304 Region Association: Southern California |
Does it actually have a bleeder on it?
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| bd1308 |
Aug 27 2005, 10:04 PM
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#4
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Sir Post-a-lot Group: Members Posts: 8,020 Joined: 24-January 05 From: Louisville,KY Member No.: 3,501 |
my vote is no....
just have to bleed the air through it, cant directly bleed the valve... |
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| ratrustle |
Aug 27 2005, 10:05 PM
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#5
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Newbie Group: Members Posts: 27 Joined: 6-June 05 From: Olympia, WA Member No.: 4,213 |
Well, I don't see anything there other than a brass tee that seems to go to both rear calipers.
Do some cars come without this device? Maybe it's like Microsoft Windows and I just have an "unnannounced feature"! |
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| Lou W |
Aug 27 2005, 10:12 PM
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#6
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"Here Kitty Kitty" my ass...... Group: Members Posts: 4,109 Joined: 9-May 04 From: Roseburg, OR. Member No.: 2,039 Region Association: Spain |
Here you go, upper left of picture;
Attached image(s) 
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| ArtechnikA |
Aug 28 2005, 07:01 AM
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#7
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rich herzog Group: Members Posts: 7,390 Joined: 4-April 03 From: Salted Roads, PA Member No.: 513 Region Association: None |
some owners who believe they are being smarter than the factory replace them with a T. Question One: Do You Have Stock Brakes ? if you have big calipers up front from some kind of conversion, you're probably OK. if not, watch out for the day you put heavy stuff in the front trunk, have a full tank of gas, and hit the brakes on a curve on a rainy day. you'll have a lovely view of oncoming traffic after you've looped to the outside of the curve... the proportioner *is* heavy and hard to bleed. there are better, lighter versions available now, and if you have stock brakes and stock-ish tire sizing IMO you should run one. the proportioner is designed to save you in a panic stop and keep the rear brakes from locking first, sending you off the road backwards (an unpleasant thing). if you have some kind of properly engineered brake upgrade, nevermind. |
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| ratrustle |
Aug 28 2005, 09:48 PM
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#8
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Newbie Group: Members Posts: 27 Joined: 6-June 05 From: Olympia, WA Member No.: 4,213 |
OK, so I didn't have a proportioning valve until today. I had one in the box of spare parts that came with the car. I thought it was a spare master cylinder.
I only spent 3 and a half hours installing this thing and getting the extra air out of the lines. I really appreciate everyones help with this. I would have never found what I didn't have without the assistance. RR |
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| tat2dphreak |
Aug 29 2005, 07:47 AM
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#9
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stoya, stoya, stoya Group: Benefactors Posts: 8,797 Joined: 6-June 03 From: Wylie, TX Member No.: 792 Region Association: Southwest Region  |
(IMG:http://www.914world.com/bbs2/html/emoticons/bs.gif) you just crack the top line to bleed it!! jeebus Britt! |
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