73 SERIES MWB REAR PROPORTIONING VALVE

[Evil 73]

I want to remove the rear brake proportioning valve from my cruiser and replace it for a junction block, does anyone see a potential problem with this? I am aware it works by proportioning the brake byas from front to rear by the amount of weight that is put in the back, only thing is the rear panels have been removed completely and is now sporting tube guards and the bare essentials are bolted to the chassi with custom brackets, this is still lighter than the crappy sheet metal i cut off.

Any feedback would be appreciated.

Benny

[Ruggers]

you can do it but you will always lock up the rears before the front

[sierrajim]

Stop being a tight wad, buy an adjustble one.

I've spent enough money in the last few days buying parts from you that you could buy a shop full of adjustable proportioning valves

[Evil 73]

I'm hearing ya but you are correct i am a tight wad. Have you got an adjustable one lying around in ya piles of junk, oh i mean hilux/seirra bits.

[turbo4t]

I had one in my middy that sh@t itself. They are pretty expensive and cause more problems than they are worth. I by-passed it with an L shaped J box I robbed from the front of another cruiser where the line joins the chassis. You'll have to make some plugs for the fluid return lines as well. All the best

[Evil 73]

Turbo4t did you find you kept locking up the rears? Also i have changed my standard diffs for 80 series with discs.

[DNA Off Road]

Removing the OEM bias valve may technically be an illegal mod [unless engineered] if it is a road registered vehicle.

Cheers

[Frankenyota]

had mine overhauled for $100, new from toyota was $260. This was for a 83 hilux.
Considered bypassing it with a hose, but was told brake bias would be out.
Good brakes was more important to me.

Matt

[turbo4t]

Turbo4t did you find you kept locking up the rears? Also i have changed my standard diffs for 80 series with discs.

It did bring the rears in pretty hard but I was mainly using the car to tow a caravan so it was good. When I first bypassed it I tested it on the grass and it did lock the rear. On road it pulled up great with or without towing.

As for Alby's comment on being illegal and requiring engineering? What technically doesn't?

[sierrajim]

Think you forgot to mention that you're putting 80 series diffs under the car as well.

Front and rear discs. If you're running the 80 series brakes maybe look at the 80 series booster, master and proportioning valve?

[DNA Off Road]

You can always adjust the orignial if you can put up with the ugly looking thing...

http://www.lcool.org/technical/80_series/brake.html