hello everyone ive just recently won on ebay 4 300zx 30mm aluminium calipers im going too send them out to get them sand blasted, and painted.
i also have 4 caliper rebuild kits that im going to do myself once i get them back from paint.
now i need the 300zx /240sx conversion stainless steel brake lines......for both front and rear, when i go on ebay they ask if i want them for an s13, or s14. what one do i choose??
and for my rotors i also have to mill down the rear rotors correct??
will i lose my e-brake aswell??

 

are you saying you got four aluminum 30mm 300zx front calipers, or you got the 2 aluminum 30mm calipers that are from the front of a 300zx, and then the aluminum rear calipers from a 300zx also? The reason I ask is because your post says 4 30mm calipers, but 300zx rear brakes are not 30mm...

anyways, yes you are going to lose your ebrake, and you're going to need a relocation bracket, the S14 lines for the front (not sure about the rear, i never looked extensively into 300zx calipers for the ear). if you want to have an ebrake you're going to need different ebrake lines as well, custom parking brake backing plates, brackets, and the parking brake assembly itself, etc.

there are some other custom ebrake styles you could use, but again, the key word is custom.

no, you don't mill down the rear rotors. you mill down the front rotors... it sounds like you're in a bit over your head. good luck...

 

Not trying to thread jack, just had some questions on the same topic.

Is it possible to just convert just the front brakes to the 30mm 300zx brakes and leave the back stock? I mainly just want to get some 4 piston heavy duty brakes on my front with some cross drilled rotors and leave the back simple so I don't have to mess with a new ebrake and running new lines.

 

yes, that's what most people do. people doing the rear brake conversion is pretty rare.

there are better options than 30mm 300zx calipers though, in my opinion.