Upgrading to Z32 quad-piston calipers. Though they're not leaps and bounds better than 87-89T dual-piston calipers, the Z32 calipers offer a few nice advantages. For one (if you get the aluminum) they are far lighter than Z31 iron units, and this will reduce the unsprung weight of your front suspension as well as the cars overall weight.

I compiled this information in the hopes that someone might find it useful for ECU/injector/O2 sensor swap information. As these are the only major differences in the Z31's stock engine management, this should be what you need to figure out if …

The stock Z31 fuel pump (same for NA and Turbo applications) will have trouble keeping up fuel flow at anything over ~300 crank HP. A Z32 TT unit or Walbro 255lph for a 240SX will work and supply ample fuel for 500HP.

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Mounting the stock wastegate actuator to an aftermarket turbo compressor housing: The wastegate actuator is not the wastegate itself. It is only a component of the integral/internal wastegate system which Z31 are equipped with from the factory.

Included here are various custom exhaust systems made by users on the Z31.com message board. If you have your own custom system and wish to have your pictures added here, e-mail them along with any other relevant information to roasttchicken AT gmail DOT com.

By: Jason84NA2T There are many differences in the early (84-86) and late (87-89) Z31 300ZX's. The power steering pump is one of them, and a concern when swapping engines or doing an upgrade.

What is autocross? If you have no idea then go here and read. The Z31 (84-89 300ZX) was not really given the respect it deserved, at all. They handled just fine for the era, unfortunately they were softly sprung for (as some say) "good ride quality".

For ECU's natively running 16k BIN files (Z31), the data is usually placed in the second "half" of the memory when using a more common 27C256 ( 32k) chip. Formatting for binary submissions:

The steering rack can be left in place once it is unbolted from the crossmember, but once you begin to lower the crossmember down it will need to be supported somehow. I just placed a length of 2x4 underneath it to hold it in place. The physical difference in the …