brake upgrade questions

[Robin260z]

hi guys i want some confirmations about upgrade my brakes.

In the front i would upgrade to toyota 4x4 vented calipers with the right rotors.

But is this a straight bolt on swap or do i have to use spacers?

second question; i want to upgrade my rear brakes to disc. found a advert that offers 2 maxima '81 brackets and 2 '79 280zx calipers.

Is this the exact combination to fit? And i gues i have to use 280zx rotors then?

Is there also an upgrade for the back with vented rotors?

Last question.

when upgrade the brakes i have read that i have to upgrade my bmc as well.

I have bought one allready and while cleaning/ renew the bmc the pistonseals broke. I found out that there are repair kits but cant find them anywhere. I have read that they are out of stock in th USA. does someone knows a solution?

Thank you.

regards from holland!

robin260z

hope

[jmortensen]

You will find more info on this at hybridz.org I think. My personal take on it is that the Toy calipers are too strong for ZX rear disc brakes, and you end up with a system that is too front biased. I ran the ZX rear disc with the stock front calipers and found that I could get the bias just right with an adjustable prop valve. With Toy fronts and ZX rears I took the prop valve out and still had way too much front braking. This might not be too big an issue on a street car and certainly the rear disc is better looking and much easier to work on, but if you're trying to get the best possible braking, a bigger rear brake setup or smaller front is a good idea.

Most people upgrade to the 280ZX master at the same time, I don't think it is absolutely required, but a stock master with Toy calipers has a lot of pedal throw.

There are vented rear brake options, but really vented fronts solves the braking issues on a Z that is driven really hard. If you look there are options from Arizona Z Car and others that have vented fronts and rears.

[ktm]

Jon, there is also the 240sx rear caliper option as well. They work well with the vented Toyo setup. Unfortunately, the only supplier of the 240sx bracket (that I am aware of) has not been heard from in a while....

As Jon stated, Hybridz.org has all of the information you need for your braking solutions.

[Oiluj]

I have the zx master with un-vented toyota 4x4 calipers in front, stock rear brakes and an adjustable propotioning valve. Brakes perform great and I was able to balance braking front-to-rear.

Who is selling the rear caliper set-up? I bought a similar sounding set online. The "re-manufactered" calipers were crap and could not be used. Spent a lot of time & effort to figure that out... After finally getting them to work I wasn't satified with the result. Changed them out for the stock rears and have never looked back...