eboling

Ok, so this thread is old, but I am currently working on a brake upgrade for my s14 suspended s130 and have done a lot of comparing of brake parts from s130, s13, s14, z31, z32, etc. I can tell you that the 82-83 280zx uses the same rear rotor as the 91-98 240sx, and that the 79-81 280zx used a rotor with a much deeper hat. However, the caliper brackets, even though they use the same bolt spacing, have a different height and offset. The 240sx caliper bracket is shorter (about 11mm) and deeper (about 17mm) than the 82-83 z bracket, but probably about the same depth as the 79-81 z bracket. So... Yes, a 4-lug 240sx rotor will fit a 280zx, but the caliper placement might not be correct without a custom adapter. You could also get lucky with another nissan caliper bracket. Several will bolt up with different results such as the 84-89 z31 (same brake pad), and 02-06 b15 (different brake pad) To give you an indication of the ridiculous combinations I have tried, for my s14 suspension project, I am currently running (front) 85 maxima 274mm rotors, 85 z31 brackets, and 93 altima calipers, and (rear) b15 se-r 278mm rear rotors, s14 calipers, s130 brackets, and 17mm spacers. I believe Fastbrakes makes a rear caliper bracket that might work with the 278mm rotors, but they only offer it with their in-house 11" rotors which may or may not be identical to the Nissan 278mm rotors. http://www.fastbrakes.com/product_p/fastbrakes%20240sx%20rear%2011.htm Good luck

I am working on just such a project. http://www.cardomain.com/ride/3978026/1983-nissan-280zx/ It is slow going as I just don't have enough time to work on my baby. I started with an s13 conversion, but changed course after a complete s14 suspension fell in my lap. I'm probably about 1/2 through. Still need to work out the parking brake, alignment, and a few other minor issues. I like the way that Takkun welded in new suspension mounting points for the rear of his s130, but not the major cutting and welding required to make the s13 shocks sit at the correct angle. In the end, I decided to modify the s14 subframe to fit the s130 chassis because I wanted to fit it as high up as possible under the car to keep the roll center as close to the cg as possible. In fact I will need to do a bit of hammering on the underside of the tool bins to clearance the subframe from the chassis. The s14 suspesion actually solves a few problems like the rear shock angles and I like the wider track (for modern wheels). The donor suspension I used is the 4-lug version, but 5-lug models are more common and possibly more desireable for z32 brake conversions and such. My modded s13 subframe