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View Full Version : Need a M/C recommendation...

boosteds13
02-25-2005, 02:09 PM
I just got the 26mm Z brakes for my S13. I have ABS in the car. I am sticking with the stock rear brakes. I did some searching but I couldn't figure out which master cylinder would be appropriate. Should I just get the Z32 one? Or would a J30 master cylinder be more adequate because of the stock rears? I am a little confused on this setup... Somewhere in my searching, I came across something about ABS equipped cars don't have to deal with removing a plug or something on the M/C. Is that correct?
orion::S14
02-25-2005, 02:19 PM
ABS cars already have a bigger master cylinder (15/16" as compared to 7/8"...that 1/16" of bore size makes a huge difference!)...so install them and then see if the bias is weird, or you feel the pedal is too mushy.

- Brian
boosteds13
02-25-2005, 02:31 PM
ABS cars already have a bigger master cylinder (15/16" as compared to 7/8"...that 1/16" of bore size makes a huge difference!)...so install them and then see if the bias is weird, or you feel the pedal is too mushy.

- Brian

Oh wow. I didn't know that. I'll give it a shot with the stock MC first and see how it goes.
SilviaDriver
02-25-2005, 02:36 PM
i have a 1986 200sx MC that is 15/16" that is good for z brake upgrades. i bought it for my s14 and turns out it doesnt fit
boosteds13
02-25-2005, 02:39 PM
i have a 1986 200sx MC that is 15/16" that is good for z brake upgrades. i bought it for my s14 and turns out it doesnt fit

Doesnt fit as in the lines don't match up?
SilviaDriver
02-25-2005, 09:11 PM
yea lines seem to not match up and im not wanting to bend anything
boosteds13
02-25-2005, 10:03 PM
yea lines seem to not match up and im not wanting to bend anything

You think the MC from an '86 200SX is the same as a '91 240 ABS MC? I didn't even think they had ABS back in '86....
SilviaDriver
02-25-2005, 10:32 PM
not sure if its the same, but i know the MC is 15/16" and is also for sale
Dream240
02-26-2005, 02:27 AM
here's all you need to know about the 300zx brake swap.

http://importnut.net/300zxbrakeswap.htm

Done and done.....
boosteds13
02-26-2005, 07:42 AM
here's all you need to know about the 300zx brake swap.

http://importnut.net/300zxbrakeswap.htm

Done and done.....

...right. That's where I saw the notation about ABS and the stock master cylinder and whatnot. Thanks for pointing out the site again.
DJPimpFlex
02-26-2005, 07:40 PM
as it says on import nut, for S14 you need to bend the lines.
nlzmo400r
02-26-2005, 07:53 PM
just my .o2. I did the 26mm swap up front, with stock rears (slotted rotors/pads) and used my stock 7/8 m/c and it works fine. The pedal feel isn't mushy as everyone told me. I wish i would've known this before hand, because i bought a new 300zx m/c and ended up selling it because it wouldnt be worth the time to install, the litle stock one works just fine, and I autoX and occasionally road race and haven't experienced any loss in feel at all. I jumped to DOT4 fluid, and its actualy stiffer than with the stock brakes and the old fluid (dunno what grade the old stuff was)
SilviaDriver
02-26-2005, 08:02 PM
importnut is using a 300zx brake MC. if i use an automatic s14 MC, i do not have to bend the lines as it is 15/16"

i dont want to bend my lines, it looks messy
boosteds13
02-26-2005, 08:08 PM
Yeah, I am just going to stick with the stock 15/16 master cylinder I have in there and call it a day. I really dont feel like swapping it out.
Soulja
02-26-2005, 11:33 PM
You think the MC from an '86 200SX is the same as a '91 240 ABS MC? I didn't even think they had ABS back in '86....

It will work fine on a non-abs s13. I'm running one on mine. But since the original question was about an abs car, I dunno.