Post by
C-Kwik »
https://forums.nicoclub.com/c-kwik-u426.html
Sun Oct 20, 2002 3:57 am
The 300ZX brakes will bolt right up to any 5-lug 240sx. You do not actually need to change the lines. If you have a machine shop machine the area around the brake line opening so it is truly flat(only a very small amount of material needs to be removed), then a banjo fitting can work. The stock banjo bolt will need to be shortened or you will need to source a shorter one. I ran this set up just fine and ended up getting ss lines later, but am still using a banjo fitting. I've used this set-up now for almost two years with no probs.
Wheel clearance is an issue. The calipers protrude out farther towards the spokes of the wheels. Spoke design and wheel offset is critical.
As far as aluminum is concerned, the biggest advantage is less unsprung weight than it's iron counterpart. Heat dissipation should not even be mentioned in this context as if the calipers have to dissapate heat, than your brakes are not adequate. Plus, most streetable pads will overheat before brake fluid boils anyways. The Z32 rotors are more than adequate for most tracks on a 240sx.
Lastly, the aluminum calipers were only available from 90-92. And in 90, the non-turbos had 26 mm thick rotors and the turbo had 30 mm thick rotors. 91 and newer Z32's all had 30 mm thick rotors regardless of turbo or non-turbo. The 26 mm version has slightly smaller calipers as well, so it may be more likely to clear the wheel. If you got a wheel that some shop recommended the size for, then chances are it will not fit. On a 8 inch wide wheel, minimally, you should be looking at negative 35mm offset. Assuming you have a fairly flat spoke design with little or no dish. It can vary from wheel to wheel. If you can it might be easier to check fitment by trying to bolt up your wheel to your friend's 300ZX and see if it will clear or not.
Lastly, the Z32 aluminum rotors are all made by Sumitomo. The Z33(350Z) Track Model's brakes are made by Brembo.