Author Topic: rear brake porportion valve (Read 2884 times)

THE ROCK · « **on:** Dec 13, 2008, 12:11:25 AM »

what happens if I remove the rear porpotion thing a ma gig off of my rearend? do I need it ? I was told that I dont..how will it affect my rear brakes?

emsvitil · « **Reply #1 on:** Dec 13, 2008, 12:28:53 AM »

Yes you need it.

Without it, the rear brakes will lock up.

*ROKTOY* · « **Reply #2 on:** Dec 13, 2008, 06:08:52 AM »

you need some sort of proportioning valve.

Joey88RUNR · « **Reply #3 on:** Dec 13, 2008, 07:40:44 AM »

I took mine off...been driving with out one for 3 months now....drove in the rain and No problems....brakes work better

4RunnerChevy · « **Reply #4 on:** Dec 13, 2008, 08:08:50 AM »

Not the best idea to take it off. If you do, then get rid of the return line and stick a $40 adjustable unit in there. You can even mount it in the cab for on the fly adjustability. That lspv adjusts your brakes depending on the load your carrying.

Mine in the engine bay at middle far right.

79coyotefrg · « **Reply #5 on:** Dec 13, 2008, 08:58:09 AM »

if your running 33 or larger tires you dont need it, i havent had one on my truck for over 10 years

boggerunner · « **Reply #6 on:** Dec 13, 2008, 09:32:21 AM »

i sell an adjuster for the stock valve

boggerunner · « **Reply #7 on:** Dec 13, 2008, 09:33:43 AM »

heres a pic

4RunnerChevy · « **Reply #8 on:** Dec 13, 2008, 09:58:22 AM »

Fancy, I used a zip tie before getting rid of it. I do like being able to adjust rear proportion, for weight. Even with tires over 33"

toyotanner · « **Reply #9 on:** Dec 13, 2008, 10:20:01 AM »

i took mine out a long time ago been running for 2 years w/o it

mudmaster · « **Reply #10 on:** Dec 13, 2008, 11:11:00 AM »

Mine is also gone.

THE ROCK · « **Reply #11 on:** Dec 13, 2008, 01:37:08 PM »

Im running 35" tires..if it aint easy and straitforward, I will wait until the 4 wheel disc conversion is done

4RunnerChevy · « **Reply #12 on:** Dec 13, 2008, 02:04:10 PM »

You guys runnin without em have a different setup I believe. I am running rear GM disks and calipers. So the prop valve mod works really well for me.

82juguete · « **Reply #13 on:** Dec 13, 2008, 07:01:32 PM »

Heres what i did on my 82 pickup....same idea as the heim joint one, but using scrap of aluminum angle and an eye bolt I had layin around the garage...cost??? $0

I will say that in the recent wet weather I have been able to lock up my brakes quite easily if i press them hard, but I think that i can tune the valve in better. I havent touched it since i cut the rod off...

jrock · « **Reply #14 on:** Dec 13, 2008, 08:07:36 PM »

I like that one.

brainlessfool · « **Reply #15 on:** Dec 13, 2008, 10:05:09 PM »

OOPS · « **Reply #16 on:** Dec 14, 2008, 07:35:11 AM »

If you find the rear brakes locking up to easy you can install an adjustable P-valve. FROR sell a kit with all the brake line adapters for the brake lines or you can get one from Summit and source the adapters fittings.

FROR P-valve:

Web page:

http://frontrangeoffroadfab.com/nfoscomm/catalog/product_info.php?cPath=27&products_id=57&osCsid=70e3bf63e06a0bb91edd00baf953c47c

*ROKTOY* · « **Reply #17 on:** Dec 14, 2008, 08:00:42 AM »

Quote from: Joeyotaman on Dec 13, 2008, 07:40:44 AM

I took mine off...been driving with out one for 3 months now....drove in the rain and No problems....brakes work better

I hope you don't find out the hard way, but if you hit the brakes hard when moving you won't like the results.
I run 35's and when I just tied it up and would get on the brakes hard the rears would lock up ever time. So I fabed up one like the one above and adjusted it so the rears would not lock up, works great.

Rocksurfer · « **Reply #18 on:** Dec 15, 2008, 11:54:01 AM »

I just put an extension on the OEM setup and was done with it.

locked 4x4 · « **Reply #19 on:** Aug 31, 2009, 11:18:32 PM »

I had a friend that just cut the rod and didn't put any adjuster on it. It just hangs their. Is that bad?? Im planning on taking off mine and I wonder if it would be better to take the whole piece out. It leaks a bit of break fluid and that kind of scares me. Any suggestions??

Steve_925 · « **Reply #20 on:** Aug 31, 2009, 11:28:37 PM »

with it hanging there you have very little brakes. best thing to do is take it out and replace it with the above mesioned one. i hate the stock ones, had bad experiences with buying used ones and them not working either(went through 3) i ended up running all 4 brakes off the front brake port on the master and plugging the other port. worked fine

locked 4x4 · « **Reply #21 on:** Aug 31, 2009, 11:55:40 PM »

so when the bar is pushed up it allows more breaking in the rear??

Steve_925 · « **Reply #22 on:** Aug 31, 2009, 11:59:14 PM »

Quote from: locked 4x4 on Aug 31, 2009, 11:55:40 PM

so when the bar is pushed up it allows more breaking in the rear??

yup.

THE ROCK [OP]

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