Pull them out and replace them?
http://www.thumper300zx.com/z31/vacuum/vacuum.htm
300zx from 84 - 88 are z31
yes, see toms z31.com
Bill says hi
Nistune. Romulator are two of them you can use to reprogram a z31 ecu.
you have to turn the pistons at the same time you push the pistons in
i dont see why not, my 87 Z31 is running with a 86 ECU (figuring by the codes iv pulled so far are all 86 codes) my car is a 4/87
A million pounds.
You might have a problem with the orientation but it will work.Here's a list of engines seen in a z31, http://www.az-zbum.com/modification.engine.swap.shtml
main bearings might get i the way The pistons come out the top.
you had battery choose btp-z31
yes