A few weeks ago I decided to completely part out my car and sell it. About 5 days after that decision, I changed my mind and decided to sell my M3 and keep the Z. The issue is that I had already swapped someone my brembo setup for his 2007 G35 brakes.

The result is that I am getting an extremely soft brake pedal feel right now. When they do finally engage, they are great - it just take a while for it to get there.

It was explained to me that this is happening because the brakes actually have a larger piston surface area than the brembos. We have bled the brakes 3 different times and it still isn't satisfactory for daily driving, much less attempting to track the car.

Is there a larger master cylinder that I can use to fix this? Is the 2007 350Z/G35 master cylinder/brake booster larger or more efficient than my 2004?

I would like to try and take advantage of this setup if I can, but I just can't live with it like it is.

Thanks for the help!

 

I'd suspect air in the system first. When I swapped my brakes for Brembos the pedal was soft in spite of bleeding it 4 or 5 times. Based on suggestions, I bought a Motive power bleeder which forces fluid under pressure into the master cylinder. I got several large bubbles out of the front calipers when I bled them using the power bleeder. Apparently air can get trapped in the abs pump and is difficult to get out with the normal "press the pedal" method.

When you're bleeding them, is the pedal hard but it goes soft when you start the car? That was the problem I had.

Here's was my original thread...
https://my350z.com/forum/brakes-and-...m-brembos.html

 

Had the same issue Dave had when I swapped to Brembos. Ended up going to Z1 and they reverse bled em.

Pedal feels a lot better and I didn't upgrade the MC or anything.

 

Reverse bled? What is that? They suck the fluid out instead of pushing it out?

 

is this the product you bought Dave?

Metal Round Universal Power Bleeder

Also wondering about the reverse bleed

 

I got the Model 0107 as it's the one that fits the Nissan master cyl reservoir...

CLICK

I had borrowed somebodys Motive w/universal adapter once and it's a pain to use.

 

awesome, thanks for the help!

I'm going to try that and hope it helps. I'll report back on how it works.

 

I have an 05 Z and I was going to do the same swap, If you have some time can you pm me and tell me about it?

 

Just an update, since none of the threads I found had one.

I purchased the Motive Power Bleeder from above and some ATE Super Blue fluid. After doing that and driving it, it is nearly perfect. The pedal takes some slight travel at first, but then the bite is great. It is hardly noticeable now, whereas before I was nervous to drive them on the street... or anywhere.

For whatever reason regular bleeding just won't work, so if you are interested in this swap buy a power bleeder... best $50 you will spend.

 

Just so u know, the pads and rotors take some miles to bed in, before they did, the pedal will feel softer than normal.

 

^^^Whoa, nice looking Z dude

anyway, i have an 04 Z, and got the calipers off of an 06 g35

this is a good tip (with the power bleeder), ill keep this in mind in case this problem comes up for me too

 

I REALLY need to buy one of these things... I'm getting pretty sick of the soft brake pedal, makes it even harder to rev-match downshifts when the brake pedal is behind the accelerator.

Hey pchio what track is that? Thunderhill?

 

Yup Thunderhill

 

some say you can, but from my experience, you can not properly bleed our brakes without a power bleeder. we dont, but some vendors on here sell the motive power bleeder, id recommend that, and its a cheap product that will serve its purpose throughout the years.

no need for a bigger master cylinder. even when you upgrade to an 8 piston front 6 piston rear big brake kit, the OEM master cylinder is more than enough

 

That was certainly my experience. Sure, you can use the old "step on the pedal" trick for a normal, quick bleed of the calipers. But to do a full flush, the power bleeder is a lot easier.

If you disconnect the brake lines, resulting in air getting back into the ABS pump, there's no way you will ever bleed them the old pedal method. I did mine several times the old way and the pedal was hard as a rock. As soon as I'd start the car, the pedal would sink to the floor. After buying the Motive unit all it took was one more bleed and everything was fine again. I knew I had it beat when bubbles starting coming out of the front calipers even after multiple bleeds the old way.

 

the 0107 is for a Ford. That fits the Nissan master cylinder?

 

i did it the old fashion way, and my pedal is very stiff.....

 

Yep, it will fit. I bought mine from Z1 auto.

 

Yup, I actually used it on a Crown Victoria this weekend.

 

Great info in here - I have the same issue with a G35 owner I just did a Brembo swap for.. Going back today and bleed that hoe bag again.. I didnt bleed it caliper long enough.. The pedal feels spongy at first then its nice and tight...I bet I just missed one or two bubbles in there. I borrowed the bleeder from Z-YA and I tell ya..this thing is BALLER.!

subscribed and will update with outcome.. Found everything I need in this thread.. Thx..

Search FTW!