Nissan z to frs brake upgrades?

[Shit Luck]

I found this and i dont speak or read japanese...
anyone shed some more light on this?
Is it lighter?
better balanced?
z brakes are easy to come by.
http://www.global-z.com/

[OrbitalEllipses]

Basically the same thing as Subaru 4-pot brakes, heavily discussed on NASIOC.

[Shit Luck]

Originally Posted by OrbitalEllipses

Basically the same thing as Subaru 4-pot brakes, heavily discussed on NASIOC.

ok I will have to go over there I guess... I haven't been on there in years.
I figured they are probably a lighter version of the subby brakes.

[OrbitalEllipses]

Originally Posted by Shit Luck

ok I will have to go over there I guess... I haven't been on there in years.
I figured they are probably a lighter version of the subby brakes.

Turbo Z32 should have had aluminum 4 pots up front; I believe in certain discussions caliper flex has come up and there are those who contend the iron calipers are "better" due their rigidity. There may still be someone aside from Global-Z that makes brackets to adapt to Subaru uprights, but it's not exactly popular as the Subaru 4 pots bolt right up and aren't *that* difficult to find. If you're looking to save a few bucks and can paint them yourself, remans are readily available.

[mav1178]

Originally Posted by OrbitalEllipses

Turbo Z32 should have had aluminum 4 pots up front; I believe in certain discussions caliper flex has come up and there are those who contend the iron calipers are "better" due their rigidity.

Types of caliper:

• 26mm rotor: aluminum caliper, 1990 nonturbo Z32
• 30mm rotor: aluminum caliper, 1990 twin turbo + 91-92.5 all models
• 30mm rotor: iron caliper, all models 92.5 - 96

http://importnut.net/300zxbrakeswap.htm (my friend Asad compiled this info, but for the site itself)

As for caliper flex, for a car our weight (2700lbs) it's not an issue. I had problems before with my setup on my S13, and it was due to a slightly bad wheel bearing.

-alex

[OrbitalEllipses]

Good info, thanks!

[utekineir]

Actually had put together a set for this a couple years back, then found a deal on new brembo calipers.

Have brackets ( from a seller making them on forester forums) that will let me use lgt front rotors, tempted to put on the frs. Right now are just collecting dust.

Don't think the rears can be used without a different bracket though since these cars take the newer Subaru rear brake style.

[wparsons]

Originally Posted by mav1178

As for caliper flex, for a car our weight (2700lbs) it's not an issue. I had problems before with my setup on my S13, and it was due to a slightly bad wheel bearing.

-alex

What does vehicle weight have to do with caliper flex? The caliper isn't supporting any weight, and a lower vehicle weight won't stop you from pushing as hard on the pedal...

Lower grip tires I could understand since the ABS will reduce fluid pressure to the caliper to keep the tires from locking, but you'll need more fluid pressure (and flex potential) to stop a LIGHT car on sticky tires than a heavy car on average tires.

[mav1178]

^^^ "flex" in the sense that the calipers cannot handle the load(s) of the car under braking as well, and the caliper halves "flex"...

I've rebuilt several sets of Z32 calipers before, and the entire assembly is held together with 4 pins. The caliper themselves are prone to heatsoak, and on the Z32 chassis the aluminum calipers seem to not do as well under repeated braking versus the iron counterparts.

A sequence could look like this:

1. Braking repeatedly
2. Caliper heat soaks and bolts are overly hot
3. Under heavy braking, the bolts stretch slightly and the caliper halves "flex"

Keep in mind the AL Z32 calipers are mounted to the suspension upright by way of iron inserts in the calipers.

What it comes down to is this: for purposes of using Z32 brakes on our cars, it works fine with the proper adapter hats and drilled rotors.

-alex