Proportioning valve...Do I need it.

[ezthere]

the truck has been sitting for over a year with out brake fluid.I have rebuilt the rest of the truck and am at the point of bleeding the brakes. I have fluid coming out of the bleeder port on the proportioning valve but can't seem to get the fluid to go down the brake line.I do not want to buy another proportioning valve..So can I pull it out of the system Cap the upper return line and just run the lower directly to the StainLess brake line.I don't see why not. Just thought I would get some input.

[kyle_22r]

if you want to defeat that system, the best thing to do would be to get a manually adjusted proportioning valve from summit.  FROR also sells a wilwood prop. valve that is set up to plug and play(most from summit are standard, you need metric).

i wouldn't think about just running straight unless it was only for the trail.   you need some brake bias or your back end will pass you if you slam on the brakes

[ezthere]

Ok I guess I will have to take the darn thing apart again..I am runer brand new lines trough out the truck.


let me ask this..When the prop valve arm is all the way up there is still a brake bias 

[MidgetMike]

I bypassed the one on my 84 and I never had firm brakes agian. I think it stopped faster but elt like os I made  a bracket for the 83 that is adjustable and I fiddle with that.

[UNBREAKABLE]

you need to keep it.

[ezthere]

Ok it's coming off the truck.

[ezthere]

Found this link...Your right. WE NEED THE VALVE.


http://www.off-road.com/toyota/projects/tacoma/rear_brakes/



We did test the braking performance without the LSPV before we installed the manual proportioning valve from Kartek to see if it was really necessary. The rear brakes had enough pressure to lock up our rear tires even at slow/rolling stops, so we immediately installed the manual proportioning valve (replacing the T-fitting junction shown in the picture on the left). The valve has one-port-in and one-port-out, so we just installed a 45 fitting on the inlet side and bolted the manual proportioning valve down using the same mounting hole that the T-fittings were threaded into. The adjustment knob is easy to access anytime we need to change the brake bias, and we have noticed much better braking performance since completing the installation.

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