Okay, so I did the 300zx brake conversion. I put in the two piston brake calipers (obviously), then stainless steel porterfield brake lines and porterfield brake pads. Like the ape I am, I realized that the master cylinder on the stock 240sx is smaller than the one on the 300zx turbo. I need a new master cylinder. Anyone know where I can find one and if the 300zx NA master cylinder will do or if I need the turbo mc. Please advise....I neeeeeed stronger braking.

The problem really lies in the initial bite and the longevity. The car brakes pretty decently when you're on the brakes hard but the initial bite is worthless. The car should be able to perform better on the braking. Plus, after a lot of braking, the 240 MC seemingly runs out of pressure and the brakes are utterly worthless.

thanks

well the Z brakes are 4 pistons. and 2, there are many different types of MC for the Z. however for the given year, the turbo and n/a will be the same thing. you can typically find a 1" mc but somethings you can get a 1 1/16" mc. i'm not sure what year those comes from but that will give you the firmest pedal. also besure to get a mc from nabco. go to

www.importnut.net and he will have step by step of how to swap mc's.

thanks for the advice, i'll be ordering that MC soon. I think I'll go with th 17/16 as well

Is anyone selling a master cylinder? Anyone? =)

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


how in the hell ur driving w the stock MC.. my car didn't stop at all !!!


get proj u pads... there D shit!!! u r car will stop on a dime!


btw, its 4 caliprs in the front 2 rear... 12 pstn total.. stock MC pushs 4 pistons... it will not hold!

Seems odd.
I put on Z32 fronts on my S14 and I am able to stop just fine. The pedal is exactly the same as with stock brakes, except I stop faster.
I don't get a spongy pedal that everyone is talking about.
Than again I did bleed my brakes :rolleyes:

Im getting ready to do the front conversion on my S14. I am just waiting for my calipers to get back from being powdercoated. I have Brembo slotted rotors, Stainless conversion lines, and PBR Pads. Should work out to be a pretty good swap.

I remember something about the MC having to do with the ABS... on cars with ABS there is only one line coming out of the MC going into the ABS pump... on cars without ABS there are 2 lines, one front, one rear... so the only time you need to slightly "modify" your MC is if the MC you get is/was different than your car... i mean, if the NEW MC was on an ABS car AND your 240sx does NOT have ABS then you need to unplug one of the pluged lines on the MC and use it as your second line..... and i think all 300zx cars had ABS... if not, then if the NEW MC you get was off of a NON-ABS 300zx and your 240sx HAS ABS, then you need to plug up one of the lines on the MC...

I had a link that i found when i did my front brake swap, but the link is now DEAD... search around and you'll find info on how to do it right...

Seems odd.
I put on Z32 fronts on my S14 and I am able to stop just fine. The pedal is exactly the same as with stock brakes, except I stop faster.
I don't get a spongy pedal that everyone is talking about.
Than again I did bleed my brakes :rolleyes:


Yeah I installed my Z32 breaks and I didn’t bleed them……… OK buddy?!


I DO DRIVE THE SHITE OUT OF MY CAR, (apparently u don’t) and when I say that the stock mc is not adequate, is bcus I drove it w the stock MC ,t he pedal is just TOOO WEAK, I couldn’t stop right!


But then again, u said that the stock MC is adequate enough to do the job for a daily driver. THAT IS WRONG! NEVER be cheep on your break, so u want to go fast but stop “OK”?!
if u want 2 take that risk , that is fine, just don’t pass that advise around!

The Z32 breaks is DESIGNED in mined to be used W the Z32 MC. The stock MC can’t handle the pressure PERIOD!

BTW , how the fuck can’t u tell the diff between the stock pedal and the Z32?! cmon man, the engagement point is totally different…

This is the internet dough, I don’t care 4 argument ..so whatever bro.

Seems odd.
I put on Z32 fronts on my S14 and I am able to stop just fine. The pedal is exactly the same as with stock brakes, except I stop faster.
I don't get a spongy pedal that everyone is talking about.
Than again I did bleed my brakes :rolleyes:


Yeah I installed my Z32 breaks and I didn’t bleed them……… OK buddy?!


I DO DRIVE THE SHITE OUT OF MY CAR, (apparently u don’t) and when I say that the stock mc is not adequate, is bcus I drove it w the stock MC ,t he pedal is just TOOO WEAK, I couldn’t stop right!


But then again, u said that the stock MC is adequate enough to do the job for a daily driver. THAT IS WRONG! NEVER be cheep on your brakes, so u want to go fast but stop “OK”?!
if u want 2 take that risk , that is fine, just don’t pass that advise around!

The Z32 breaks is DESIGNED in mined to be used W the Z32 MC. The stock MC can’t handle the pressure PERIOD!

BTW , how the fuck can’t u tell the diff between the stock pedal and the Z32?! cmon man, the engagement point is totally different…

This is the internet dough, I don’t care 4 argument ..so whatever bro.

But i also have a question for the people who know something about this... The brakes on the 95 240sx that i did the front 300zx brake swap on, are very stiff and the braking is not good at all... i couldn't even call it brake fade, because the brakes are faded to begin with, as soon as i step on the pedal.... the pedal is very stiff, and it barely brakes, i always have to drive very prudently and brake in advace so i don't end up rear ending someone...

Any ideas why this is and how i could fix it ?

mike

But i also have a question for the people who know something about this... The brakes on the 95 240sx that i did the front 300zx brake swap on, are very stiff and the braking is not good at all... i couldn't even call it brake fade, because the brakes are faded to begin with, as soon as i step on the pedal.... the pedal is very stiff, and it barely brakes, i always have to drive very prudently and brake in advace so i don't end up rear ending someone...

Any ideas why this is and how i could fix it ?

mike

A double double post.

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


how in the hell ur driving w the stock MC.. my car didn't stop at all !!!


get proj u pads... there D shit!!! u r car will stop on a dime!


btw, its 4 caliprs in the front 2 rear... 12 pstn total.. stock MC pushs 4 pistons... it will not hold!


Yeah, the braking is pretty shoddy but I have to say, with the stainless steel lines and the porterfield brake pads, the car stops pretty average, even with the smaller MC. I also have brembo slotted rotors. I think all the extra stuff helps a little bit to assuage the poor MC.

sorry about the doubl post, AF was weird somehow, i didn't click "post " twise..ah well
my bad yaall!

awdsr20, i have driven a few S14's with Z brake swaps with the stock MC and it seem to have a stiff pedal. however those were all ABS equipped cars and it worked. the only problem is that the rear was wearing out faster then the fronts were.

when i had the Z brakes and i was still running on the stock MC, i couldn't even do a burn out cause the front brakes were soo weak, it couldn't even hold the car still.

that makes 2 of us.. (i have ABS, disconected) but yeah, i could stope, i ha to get home ASAp 2 put the new MC on.

i read in sport compact car that there are two suppliers for the OEM mc for Z nabco and tokico. get the nabco cuz the tokico requires custom fabricated brake lines in order to fit. the nabco bolts right in

just to throw a twist into some of your plans...

i am soon doing a 3000GT VR4 rotor conversion on my Z32...so if anyone has 17" wheels or bigger, tell me and if it goes as planned i may be able to start having these custom brackets made and shipped out.

the stock Z32's have 30mm calipers except for the 90 N/A's which came with 26mm calipers. the Z32's rotors are 11" tall and the VR4's rotors are 12.5" tall. so if you are looking for a even bigger brake upgrade for your 240sx...im sure if it can be done on the Z32 it can be done on the 240sx.

if you have the Z32 26mm calipers this upgrade will not work as the VR4 rotors are 30mm wide. also, beings the VR4 has a different offset, a spacer will need to be made specifically for the 240sx. i probably wont be able to supply these as i dont have a 240sx at my disposal to take measurments from but if the Z32 front brakes swap right on the 240sx, with the custom bracket the VR4 rotors should also.

just a thought...if anyone is interested you can PM me and i will store it and get back to you once i have completed the conversion so i know exactly what it is involved and if it is even possible.

dude, for a light car like the 240...Z32 i think is cool enough...

my 2cts

Yea, Im with AWD. I think that with bigger rotors, you will still have the 30mm calipers and pads covering the same amount of surface area that they would on the 11 inch ones.

Yea, Im with AWD. I think that with bigger rotors, you will still have the 30mm calipers and pads covering the same amount of surface area that they would on the 11 inch ones.

yeah i understand...i was just throwing the idea out because im a nice guy. :)

anyways, the 11" rotors tend to warp very easily atleast with the 300zx because if its weight. so the 12.5" rotor helps with this and it also adds alot more leverage which causes greater braking ability if needed.

i have dont alot of research on teh subject and have talked to quite a few guys that have put the 13" supra rotors on their 300zx with the stock calipers and because the rotor was so big it didnt disperse heat evenly. so the 12.5" rotors would but a nice fit according to my research atleast. we will see what it turns out like.

like i said if anyone is interested PM me...if you dont think it is a good idea, i dont really care.

You know these ought to fit on a 240SX too, given the proper wheel to go with.

http://sportcompactcarweb.com/projectcars/9902scc_proj300zx03_zoom.jpg

14" rotors and 6 piston caliper anyone?

Anyway...as for the 11" rotors warping...never heard of that one...they had problems with the early style aluminum calipers warping but that got fixed with a switch to iron.

You know these ought to fit on a 240SX too, given the proper wheel to go with.

14" rotors and 6 piston caliper anyone?

Anyway...as for the 11" rotors warping...never heard of that one...they had problems with the early style aluminum calipers warping but that got fixed with a switch to iron.

yeah, the rotors tend to warp also do to the extreme heat enforced on the rather small 11" rotor. its not something a normal street driver will encounter but when Z32 owners start taking their car to the tracks and such, this becomes a problem.

the brake calipers themselves are very high quality, this is why alot of Z32 companies offer a "cheap" big brake kit. the caliper has more than enough clamping power, but the rotor is enlarged to increase leverage and ease on the heat and warping problems.

On the track I could definately see some warping going on but I was thinking toward the street only. Anyway, like you mentitioned, it shouldn't be a problem in any capacity with a lighter 240sx.

Also, the subject of Z32 rear brakes was brought up eariler or in another thread or somewhere. Most cars use a cable to tighten up the rear disc brakes for use as parking brakes. The Z used a small drum brake mounted to the inside of the disc brake. So, since the Z32 rear calipers have no provisions for a parking brake it makes for a difficult swap.

wow thats cool sure pm me whenever..

huh?

about the 3000GT swap sry bout that im still gettin used to this thang...