I suppose this question ONLY applies to 40 owners with disc/drum set ups. I've searched, and have experimented personally with Wilwood, factory used, and other brands of prop valves for the rear brake circuits with little success. The aftermarket adjustable prop valves help, but don't entirely correct the problem. I want to go ahead and state that this IS NOT a warped drum, weak caliper, bad master cylinder etc etc. problem. This is a design fault in my opinion. Later in production Toyota installed Load Sensing Prop Valves on most Land Cruisers in my opinion to correct this systemic issue.
My question is has anyone solved this issue with a combination of prop valves or what not that I haven't tried yet?
Just for back story this is a 77 fj40 with a late model (single wheel cylinder per wheel) rear axle. All the brake components including the calipers, rotors, drums, wheel cylinders, master etc. are all relatively new. I guess I should go on to say that I've put together several fj40 with the same components and they all have ultimately braked really well with the exception of this attribute. I guess I'm just at a point where I would like to put some bandwidth into a correction for it instead of adapting my driving habits like I have done over the years. My searches haven't yielded anything positive with the most recent one yielding someone giving up on solving the problem.
My question is has anyone solved this issue with a combination of prop valves or what not that I haven't tried yet?
Just for back story this is a 77 fj40 with a late model (single wheel cylinder per wheel) rear axle. All the brake components including the calipers, rotors, drums, wheel cylinders, master etc. are all relatively new. I guess I should go on to say that I've put together several fj40 with the same components and they all have ultimately braked really well with the exception of this attribute. I guess I'm just at a point where I would like to put some bandwidth into a correction for it instead of adapting my driving habits like I have done over the years. My searches haven't yielded anything positive with the most recent one yielding someone giving up on solving the problem.