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The mkiv Supra Owners Club

Hydraulic handbrake


Noz

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Been having a play about lately, and noticed my stock handbrake is not liking the beatings and eventually its going to fail. It's already up to 90° just to park, so I need to look into sorting it out.

 

Are these easy to install? Any limitations? First Im even looking into this so 100% no idea at the moment whats involved. Thought I'd ask the living knowledge of the forum.

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What if I use a shut off valve, to be able to switch the lines, so one feeds to the hydraulic handbrake, and one to to leave it open. That way I can run the stock system or turn the valve, and direct pressure through the handbrake only. We make valves where I work, there must be a way you can adjust the system on the fly and just close off the required valves or keep the system working both ends.

 

I assume a line lock must also been required for the front brakes?

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id like both. we do ball valves and various manifolds where i work, i dont see why you couldnt install a system and just block it off when required. some of the small bore ball valves i work with go up to 15,000, im sure hydraulic oil in the brake lines won't be that much. as long as you use the correct seat material i dont see why it wouldn't work a treat. i dont 100% understand the plumping of the system, how it would work with a valve.

 

If the hydraulic handbrake only put pressure to the rears, do the brakes still control all 4 wheels? i began looking into this when i made the thread welsh, all very new so still some unanswered questions :)

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What if I use a shut off valve, to be able to switch the lines, so one feeds to the hydraulic handbrake, and one to to leave it open. That way I can run the stock system or turn the valve, and direct pressure through the handbrake only. We make valves where I work, there must be a way you can adjust the system on the fly and just close off the required valves or keep the system working both ends.

 

I assume a line lock must also been required for the front brakes?

 

What is the purpose of this installation mate, are you using the car for drifting?

 

If so the OEM handbrake can remain in place so the car will pass the MOT.

 

The hydraulic handbrake is a seperate system altogether and really, unless you are drifting, is a pointless addition to a road car.

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The OEM handbrake isn't hydraulic, nor does it operate the rear pads. Yours does sound like it needs adjustment or perhaps a service.

 

It works brake shoes in a little drum in the centre of the rear hubs via a cable system. A hydraulic handbrake would not interfere with this system in the slightest.

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Yours does sound like it needs adjustment or perhaps a service.

 

Lol yes mate it definitely has took some stick.

 

I know the cable brake is a seperate system, I meant how will the hydraulic handbrake operate the rear brakes without have a line lock, as this would just operate the fronts as well wouldn't it? I know the front and rear are bias, but they all use the same connected line so without a line lock how is the rear operated without the front?

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Lol yes mate it definitely has took some stick.

 

I know the cable brake is a seperate system, I meant how will the hydraulic handbrake operate the rear brakes without have a line lock, as this would just operate the fronts as well wouldn't it? I know the front and rear are bias, but they all use the same connected line so without a line lock how is the rear operated without the front?

 

My bad mate, I was picking you up wrong on your question.

 

The hydro handbrake is plumbed into the rear brake lines only, then the rear system is isolated from the front when the hydro handbrake is pulled so pressure can be applied to the rear brakes without affecting the fronts. There is no need for line lock kits or anything of the sort.

 

When you press the brake pedal all brakes *should* work as normal as the fluid going to the rear brakes simply passes through the hydro hand brake master cylinder without interruption.

Edited by pedrosixfour (see edit history)
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