No proportioning valve from factory? (1 Viewer)

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Dec 11, 2018
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I've been trying to install an entirely new brake system in my 1981 bj42 (canadian). I've replaced all brake lines, master cylinder, wheel cylinders, calipers, etc. But never came across any kind of promotioning valve. I'm thinking the PO may have removed it, or that it just never came with one. I would think that it should have one considering it has calipers in front and drums in the rear, but unsure. Any help would be appreciated.
 
Not sure on BJ42, but ‘70 FJ40 has no proportioning valve with original drums in front and rear. When I can converted to disc brakes in both front and back, I added a proportioning valve. It was recommended as the disc brakes in the rear may lock up earlier than the front. My guess is that with drums in the rear, there is no proportioning valve. My ‘98 Tacoma with discs in the front and drums in the rear also does not have a proportioning valve.
 
Not sure on BJ42, but ‘70 FJ40 has no proportioning valve with original drums in front and rear. When I can converted to disc brakes in both front and back, I added a proportioning valve. It was recommended as the disc brakes in the rear may lock up earlier than the front. My guess is that with drums in the rear, there is no proportioning valve. My ‘98 Tacoma with discs in the front and drums in the rear also does not have a proportioning valve.
Hey thanks for the reply! That makes sense to me. I guess I'll just have to lock up the brakes and test it out.
 
My Bandeirante is the same, original no valve and 4 drums. The diameter of the pistons inside the drums differs front vs. rear. I guess, this is how they "distribute" the brake power.

The preowner on my truck installed a reinforced suspension and discs at the front. The brake booster is still the same and no valve. For me it works pretty well like that.
I thought about converting the rear to discs as well, but the drums are kind of big and bullet proof and it just works for me, I never felt a lack of brake performance.

Hands up (even so I have the short version), I usually don't have a big load on the rear. Just a support for a jerry can and spare tire, some tools, once in a while a extra jerry can.
 

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