DjHackStyle

I like ur idea of upgrading the master cylinder, i checked out the specs for the 03 g35 master cylinder and it looks like it'll bolt on but the push rod depth is 1.75" versus the 03 maximas 1.01" so i dunno if that would work out. The bore size they use is 1" which is slightly bigger than our 15/16". If we can find a direct replacement upgrade that would be sweet.

DjHackStyle

Tell me what u think about this. Its the closest i could find

2003 350z with standard brakes


2003 maxima


The biggest difference i can see here is the location of one of the lines it might need to be bent. I dont know if it'll bolt on or if the 350z uses the same criss cross pattern for the brake lines as the maxima. Just going on specs.

knight_yyz

iTrader: (40)

Do the pads overhang? I'm trying to picture it and it sounds like it is pretty close.

I took my 16" rims from a 4th gen and was able to bolt them to the spindle. But, they would not rotate, so a decent spacer and you can run 16's

knight_yyz

iTrader: (40)

I don't know if anyone has ever upgraded the master cylinder. it should give more braking power according to the laws of hydraulics. Bigger bore = more pressure.

aackshun

iTrader: (3)

If you guys want master cylinders to play around with it for dirt cheap... Here...

832-467-4400

Ask for Aaron.

They have nearly every single master cyl for any Nissan/Infiniti for 03+

MrEous

iTrader: (11)

^^ That Aaron, good guy
Shipping is pretty fast too...no waiting around for weeks.

knight_yyz

iTrader: (40)

Now that i have been running this setup for a few days I am really happy with it. Braking is night and day difference over oem. I still have to get used to it. I can brake much later when pulling up to a set of lights. Even just touching the brakes the car takes a small nose dive. And aggressive braking is just plain fun. Wow, if you really want to stop on a dime you can do that with this setup.


I wouldn't mind playing around with a master cylinder, but I want to make sure it bolts up to the existing bolt pattern on the car. I don't think it really needs it now that the new pads are burned in and I have been driving for a few days

aackshun

iTrader: (3)

For chits n gigs, the AWD G35 uses the exact same master cyl as maximas do.... So obviously for heavier cars our master cyl is used

a32fever

Been checking all day. i cant find anything about g37 sedan brakes. I have my friends flooded 09 g37x in the yard getting parted was wondering if the calipers and any other parts would fit my 4th gen before I waste time on the g37 its not the S

aackshun

iTrader: (3)

So to clarify.

You have access to the brakes on said vehicle.

You have your car also.

And you're asking us to tell you if they fit?

To be honest, we should be asking YOU that question :-p

(Just my observation).

Progress will never be made if someone does not go out of their way and try something.

How do you think anything is discovered?

So here's what you should do.

Take off the brakes from the G37. Take off your brakes, take pictures of everything.

Attempt to install the brakes on your car, I know off the bat you will have bolt issues (you can just use a 1/4 drive extension to hold the caliper in place for testing) but just see if the caliper and bracket even line up w/ your spindle w/ the rotor for the 's.

Upload the pictures, results and opinion into a NEW thread.

Pat yourself on the back, you have just contributed to the community.

Crusher103

iTrader: (10)

MrEous

iTrader: (11)

Sometimes you make too much damn sense, Aaron.........

DjHackStyle

I bought a 350z master cylinder from a 2005. Got it used on ebay. Compared it to my maximas master cylinder and it looks like a direct bolt on. I see the difference in bore size and it looks beefier. Ill get some comparison shots for you guys. I wont be installing it soon because i have a really bad brake problem im still trying to figure out.

350Z left. Maxima right

MrEous

iTrader: (11)

^^ Should fit, IMO...the port sizes are the exact same. Biggest difference being the bore size on the 350z is an 1/8" larger.

(Just as long as you didn't get it from a Brembo package Z...the port sizes are larger on the Brembo package)

knight_yyz

iTrader: (40)

Well it makes sense that the 350Z master would be a good match with this brake upgrade. I'll have to see if I can find one and give it a try. How do the ports for the lines match up?

Is there a Nissan part number on that?

DjHackStyle

One of the lines is not a direct match, the maxima has a port facing up and the 350z MC has that port facing sideways. So either u bend ur line or make a lil hardline with the proper bends on it to reach. Maybe like 2 inches away.

knight_yyz

iTrader: (40)

According to Centric, the push rod lengths are different. Maxima is 1.01, and the Z is 1.00

DjHackStyle

Too minimal to make a difference .01 of an inch.

Maxima


350Z


Heres a closeup of the ports.

knight_yyz

iTrader: (40)

does something plug into the maxima reservoir? I don't recall anything being there, but it looks like an electrical port. I have to run out and check that out

DjHackStyle

Yea a lil sensor in the reservoir to know if its empty, Turns on the brake light.

knight_yyz

iTrader: (40)

but it doesn't appear to be on the Z reservoir, or is their a cover on that one?

DjHackStyle

Its on the other side of the reservoir. Which actually works out for the maxima because the wire plug comes from left of the MC and connects on the right side of the MC and if u use the 350z MC the connector hole is already on the left side, no need to run the plug around. If u really wanted to u can use the reservoir off the maxima MC and put it on the 350z MC. Looks like a direct fit, but i dont see a need for it, the plug is the same.

knight_yyz

iTrader: (40)

awesome, now I just have to source one

aackshun

iTrader: (3)

Bump. I am finally getting around to installing this on my own vehicle. Check this post in my blog for details and my personal opinions on this mod.

http://aackshunsgarage.blogspot.com/...n-upgrade.html

BPuff57

Sorry for the bump on a super old thread, but I wanted to be sure everyone had a definitive answer on whether this would fit. I have a 3rd gen Altima (SE-R), and used the content in this thread to modify the dual-piston calipers to fit. As-is, the bracket and caliper ceiling is too tight of a fit with the 12.6" rotors. You'll need to mill down the ceiling of both by around 3-4mm in order to get it to fit. Here's the final results, though:





This would work on a 6th Gen Max, and I believe there is no milling necessary on the 7th Gen Max.

As far as performance goes, I tested out my stock SE-R brakes (identical to the stock 6th Gen brakes), and I averaged around 110ft over ten 60-0mph stops. That's with Rays Gram Lights 57F wheels, new Continental Extreme Contact DW 245/40ZR18 tires at all four corners, and Motul 600RBF fluid. No stainless lines. After installing the 2006 350z setup (front and back), same ground, same weather, and same conditions, I averaged just over 100ft with 60-0mph stops.

This mod works. If you're on the fence and want an affordable BBK, do it.

Thanks to all the minds behind this!

Crusher103

iTrader: (10)

Great.

Bigger question who has done the 350Z master cylinder? That could really benefit the entire forum.

aackshun

iTrader: (3)

I have one. And my motor will be in the air today....

What's le beneits of a bigger master cyl? (I know the science, but idk if it's worth the work and idk if I want the black car to be the guinea pig )

That's a chitload of bleeding to do....

And dont go talking nonsense about brake boosters, AWD G35s use the same exact model booster as 95-03 Maximas.

I think I'll hold off, get SS brake lines and then do the master cylinder, at least I'll get the placebo of SS brake lines worst case scenario, I just don't see having a bigger piston enough to justify the labor.

Unless there's something in it for me???? I mean the master cyl is just sitting there in a box.... I can easily throw it on this weekend....

Ew, oh god, I just remembered the dirty has ABS -__-

asand1

iTrader: (1)

A bigger MC will shorten your pedal travel, but actually decrease brake fluid psi and brake force.

Carl Bush:
A master cylinder is used to convert force from the brake pedal into the hydraulic pressure that operates the brake calipers. The amount of pressure generated is a function of the force being applied, divided by the master cylinder bore area. A 1” master cylinder has a bore area of .785” inches squared. For every hundred pounds of force applied to the master cylinder piston by the pedal pushrod or balance bar, that master cylinder will generate pressure equal to 100 divided by .785 or 127.4 PSI. By calculating the area in inches squared (bore x bore x .785”) for any master cylinder size, you can calculate how much pressure change would be affected by a bore size change.

A 7/8” bore master cylinder has a bore area of .6” inches squared. If we apply that same 100 pounds of force to the 7/8” master cylinder, using the formula 100 divided by .6, that same 100 pounds of force from the pedal will generate 166.7 PSI. A decrease in master cylinder bore area produced a proportionate increase in line pressure. This line pressure management becomes a key factor in setting brake balance.

asand1

iTrader: (1)

A bigger MC will shorten your pedal travel, but actually decrease brake fluid psi and brake force.

https://www.facebook.com/notes/joes-...18382938195729

Crusher103

iTrader: (10)

That sounds great but if im not wrong this is not even something i have to researched. Pressure is important but we are talking about increasing the size of the entire brake system. When moving to larger rotors and calipers the system requires less pressure to produce the same results but requires moving more volume/fluid to make pressure. So in order for a brake pedal to stay constant in feel and braking force we would want the bigger master with less brake pressure but the ability to move more fluid.

Also if your brake pedal producing more pressure with smaller movements in turn that should make your brake pedal more sensitive. Myself and others have reported that it takes a lot more to get the bigger brakes to react but when they do you actually have less "room for error" or you have to be more precise with your pedal inputs, you lose predictability. I've driven 350Z and G35s both with Brembos and standard brakes and they have very linear brake pedals that have great bite with little travel, a good confident inspiring braking feel. So a larger MC should be more forgiving and allow more linear pedal while a smaller MC would make for a progressive pedal.

Like i said this is not something i have done tons of research on so correct me if im wrong. But i believe that is the trade off. your increasing one thing to decrease something else there is probably a kinetic energy formula or something on friction coefficients, somebody look it up. But if you have to apply 160 PSI to our stock brakes to get .75 G worth of braking im sure on a larger brake setup providing tires have unlimited grip, the brake pads have the same friction coefficient but now we have larger brake pads and brake rotors, 160psi will produce a higher G, maybe 1G of braking.

Also taking a look at the link you just posted, did you notice the math they were doing for the brakes is just on the front. Not front and rear. They are saying 7/8 master on a 4 piston caliper for the front axle. With the pistons bores measuring in a around 44mm. Then another master for just the rear. and doing calculations for it plus the balance bar. The Z32 most people run have a piston bore 40mm but also using a single master on the entire system. So its all eight of those pistons on the front plus the 2 34mm pistons in the rear. A few super cars run dual MCs but most cars just have a single MC. So that information is a nice baseline of understanding brake masters cylinders and pressure but i think its a little to simple to apply to everyday cars using a single master with proportioning valves, ABS, Soccer moms etc.

aackshun

iTrader: (3)

Well, since this thread is in reference to these calipers and not 4 piston floating....

I have noticed nothing by improvements in brake pedal's performance since the swap.

The most considerable one is the repeat hard stopping performance.

Crusher103

iTrader: (10)

Shut up b1tch, Only thing i want to hear out of you is "yes i have done the 350Z master cylinder and it works great, And i would like to give all praises to Crusher for allowing my presence in conversation because he is God" OR "yes i have done the 350Z master cylinder and it is not applicable to our braking systems, And i would like to give all praises to Crusher for allowing my presence in conversation because he is God."

asand1

iTrader: (1)

I guess all I was implying with my post is that if the Max MC is acceptable, it will put more psi in the rotors. Some like the all out performance. Myself, I would prefer the correct balance that the 350Z MC would give. And i would like to give all praises to Crusher for allowing my presence in conversation because he is God.

BPuff57

I get that - I believe the hardlines are all the same diameter as the 350Z, so the main differences are the caliper setup, BMC, and pedal. I don't know that we can swap the pedal (nor really want to... that's a TON of very uncomfortable work in a foot well... ), but the BMC should be a direct swap (except a little brake line bending). I have a 350Z BMC, and I'm planning the swap eventually, but need to get a good brake line bender, first.

Do you already have the 350Z brake setup plus the 350Z BMC??

asand1

iTrader: (1)

No, I have the 6th gen fronts on my 96. bias is off, but stopping is MUCH better than stock.

BPuff57

Just a heads up to everyone that I'm offering to build these for 5.5 and 6th gen owners. Thread is here.