Thread: Brake master upgrade

Anyone tried?

Altima one works great.

Its pretty common when upgrading the brakes, I have z32 brakes up front and p10 rears, I have to put in the altima master cylinder. I think there is a how to with a list of master cylinders that work.

Does the altima master Cylinder make a difference if you have the stock brakes?

Yes - because it has a larger diameter more it can move more fluid faster thus giving you more brake pedal.


Or you can go with Tilton pedals... Tilton Engineering - Innovative, High-Quality Racing Products

There is science behind upgrading master cylinders. Without calculating things. I would not upgrade based on other people stating "it works"
After market pedals are not that easy to adapt due to the steering column being in the way...
I went with a dual master setup by modifying the stock pedal to ~5.5:1 ratio and eliminating the vacuum booster but that would be unnecessary for a street car.

Waste of time unless you got it for free or something and are bored.

Not sure what the big deal is, you do not need an engineering degree to see the benefit. It is a bigger primary cylinder so you are moving more fluid with the same amount of pedal movement, it will not make your car stop any faster, but it will require less brake pedal movement for the same amount of clamping force. It will effect any car no matter what brake setup.

The one option where you NEED the bigger master cylinder is if you go to much bigger calipers. You will need a larger master cylinder to actually move the caliper piston, this is where you may need to do some calculations to make sure you have the correct master cylinder.

I am running stock calipers with larger rotors and the pedal feel is great, i do not have to put the pedal to the floor to get the car to stop.

Sure you can push more fluid but I'd say the difference in pedal effort is so minimal it's not worth it, unless he got it for free and wants to work on the car. Now as far as needing the bigger MC w/ bigger calipers I'd say that depends - on how much bigger the calipers are. For example - we have lots of guys on here with B13's or B14's running the NX upgrade which are larger calipers and not even touching their MC's. It works but not as effectively, for the reason you mentioned, you can't push as much fluid as those bigger calipers are engineered to use.

I of course have the NX MC, but to tell you the truth I didn't notice all that much. I drove the car around for about 2 minutes with the NX brakes w/ new pads and lines without changing the MC to make sure everything was good, since I was going to replace and bleed out all the brake fluid anyway, make sure no pistons were seized etc. as I got them used (still have the originals in my garage) and then I came home and replaced the MC, removed some things and bled the lines and replace the Walmart crap w/ Nissan heavy duty brake fluid ($8/bottle at the dealer - best stuff I've used so far but not synthetic)

Now if you went to Wilwood calipers and didn't change the MC you'd be insane

Your post does not make sense, you contradict yourself. You say you do not need to upgrade the MC with the NX2K brakes but you also say it is not as effective without using the NX MC. You also say you "of course" have the NX MC but say you did not notice much of a difference. You drove the car for 2 minutes with the stock MC, that to me is not enough time for a valid comparison, that is also not enough time to bed in the pads. So which is it, should the MC be upgraded?

My first post says everything that needs to be said. Unless someone has a direct comparison saying upgrading the MC from 3/4" to 15/16" has a negative effect, it can only benefit. There have been quite a few people that have done this swap and i have never heard any negative effects. I will also add that if you are going to a Wilwood or similar setup they will recommend which MC they want you to use.