How To: 350z/G35 Dual Piston Brakes
04-07-2012, 06:09 AM
#81
Member
Join Date: Feb 2012
Location: Murfreesboro TN
Posts: 261
Is it possible to run our stock rotors with the G/Z caliper due to the 3mm difference stated above? I am doing my brakes today and will probably go pick up 6th gen caliper/brackets from the junkyard with autozone rotors/pads since it is infact confirmed to bolt up.
04-09-2012, 07:37 AM
#83
Well they're done. The total taken off is only about 2mm off the caliper. I ended up borrowing an angle grinder from a friend and stuck a 7" wheel to grind them down. It isn't perfect but it looks a ton better than when I was attempting it with a Dremel. <--:haha:
I decided to grind down the caliper 'ceiling' itself so new rotors wouldn't need to be milled down.
Anyway, here are some final pics: (click to see bigger)
Before and after
Rest of the pics
INTERESTINGLY...the pad has more contact area than a Wilwood pad does.
I decided to grind down the caliper 'ceiling' itself so new rotors wouldn't need to be milled down.
Anyway, here are some final pics: (click to see bigger)
Before and after
Rest of the pics
INTERESTINGLY...the pad has more contact area than a Wilwood pad does.
04-13-2012, 07:49 AM
#88
What more info do you need?
05-23-2012, 01:44 PM
#90
I ended up going with a bigger BBK and am about to sell the G35 calipers I personally grinded down...lol...so I never got to try them out. 
Though going from a stock 4th or 5th gen will see a vast improvement. Going from a 6th gen single piston setup to the dual piston setup should still see an improvement as well...
Though going from a stock 4th or 5th gen will see a vast improvement. Going from a 6th gen single piston setup to the dual piston setup should still see an improvement as well...
Last edited by MrEous; 05-23-2012 at 01:48 PM.
05-23-2012, 07:44 PM
#93
I ended up going with a bigger BBK and am about to sell the G35 calipers I personally grinded down...lol...so I never got to try them out.
Though going from a stock 4th or 5th gen will see a vast improvement. Going from a 6th gen single piston setup to the dual piston setup should still see an improvement as well...
Though going from a stock 4th or 5th gen will see a vast improvement. Going from a 6th gen single piston setup to the dual piston setup should still see an improvement as well...
05-24-2012, 07:00 AM
#95
You know what...
Come to Maxus to get a ride in G35 Dual Piston Brakes on a 4th gen.
The red car may not be pretty by then but it'll be rolling around well enough for people to get a taste of what cost effective braking is.
Come to Maxus to get a ride in G35 Dual Piston Brakes on a 4th gen.
The red car may not be pretty by then but it'll be rolling around well enough for people to get a taste of what cost effective braking is.
05-24-2012, 07:11 AM
#96
Member
Join Date: Aug 2011
Posts: 121
By the way, do you think that there will be brake pedal issues like some complain about with the Z32 brake upgrade?
05-24-2012, 07:37 AM
#97
Master Cylinder Piston Diameter.
Brake Proportioning valve.
The brake boosters are the same, and the rear calipers are similar piston sizes.
I have a box full of Master cylinders for G35s w/ the bigger pistons (than our 4th gens). If you want one I can do $20 shipped.
Now that's if you want to go the extra mile. To me though, I personally think that rumor is like 99% of the other stuff on this forum, I would say take it with a grain of salt and do your own research.
05-24-2012, 07:39 AM
#98
^^ Oh damn you Aaron...haha
My thought just based on observance of specs and nothing else...the master cylinder isn't needing to use as much force to push the pistons on the G35 DP calipers.
G35 DP calipers have 2x43mm pistons equaling 86mm being 'pushed'
300zx 4P calipers have 4x40mm pistons equaling 160mm being pushed.
...and just for comparison
6th Gen single piston caliper has a 57mm piston
5th Gen single piston caliper has a 57mm piston
So the G35 DP size is closer to stock than the 300zx.
G35 DP calipers have 2x43mm pistons equaling 86mm being 'pushed'
300zx 4P calipers have 4x40mm pistons equaling 160mm being pushed.
...and just for comparison
6th Gen single piston caliper has a 57mm piston
5th Gen single piston caliper has a 57mm piston
So the G35 DP size is closer to stock than the 300zx.
05-24-2012, 08:15 AM
#100
Found this info...
I believe most Maximas have a bore size of 15/16"...
...it may seem like a little bit of difference but I'm sure the 1/16"+ translates to more flow/lbs.
The 1 1/16" Bore Master Cylinder replaces original units on cars built prior to Z32's 01/1991. Build dates from 02/1991 onward used a 1" bore. However cylinders are interchangeable across all year model Z32 applications.
...it may seem like a little bit of difference but I'm sure the 1/16"+ translates to more flow/lbs.
03-16-2013, 06:04 PM
#102
Back from the dead
I just did a test fit on a 5.5 knuckle and everything looks good. I'm a tool and die maker by trade so i just brought the 08 rotors to work and turned them down about 3mm. I could have gone a little more. As you can see from the pics, there is still room outside the pad. I love this upgrade even before it is on the car because i did not have to hack the dust shield!! I just put everything together with brand new pads and these lightly used rotors.
In picture three it looks like there is a bit of an offset problem, but the caliper bolts right up with no problem.
In picture four you can see the rotors stick out past the pads a few mm. I may turn them down again and paint the outside diameter with a high heat rust proof paint.
I just did a test fit on a 5.5 knuckle and everything looks good. I'm a tool and die maker by trade so i just brought the 08 rotors to work and turned them down about 3mm. I could have gone a little more. As you can see from the pics, there is still room outside the pad. I love this upgrade even before it is on the car because i did not have to hack the dust shield!! I just put everything together with brand new pads and these lightly used rotors.
In picture three it looks like there is a bit of an offset problem, but the caliper bolts right up with no problem.
In picture four you can see the rotors stick out past the pads a few mm. I may turn them down again and paint the outside diameter with a high heat rust proof paint.
Last edited by knight_yyz; 03-16-2013 at 06:07 PM.
04-03-2013, 04:59 PM
#104
I never did install mine that I had grinded down...ended up getting an APRacing BBK for a good price. lol, so these are just sitting. Need to find a local 5.5 now to sell them to, or someone here.
04-27-2013, 07:02 PM
#105
Just did this upgrade today. Could've used a bigger rotor as you could see. Im relatively new to all of this so it was more of a trial and error for me especially since i got the brembo rotors for $100. I kinda like the banana yellow lol. It's different. http://i1323.photobucket.com/albums/...ps7633d5e7.jpg
04-27-2013, 07:22 PM
#107
I went with an oem 05 G35 brembo rotor. And no didn't have to shave the rotor caliper down at all. However I went with the oem G rotor for the mere fact as stated before that I got them for a steal and if the size was off by that much I could always just get rid of them. Drive it around the block afterward and wasn't too impressed. Feels almost the same as stock truthfully but it also could just be me used to the wife's minty brand new Altima brakes...who knows
04-27-2013, 07:52 PM
#108
04-28-2013, 10:14 PM
#113
Senior Member
Join Date: Feb 2012
Location: Bronx, NY
Posts: 973
I would like to use the 320mm or 12.6 6th gen rotors but dont know anyone that can turn them down to the right size.
By the way knight. After turning the rotors down, what is the correct size needed to clear the calipers?
04-30-2013, 04:19 PM
#114
*UPDATE* found a loose stabilizer link today (tightened it of course) and got wheels aligned. After which drove a cl55 AMG (amazing car) them drive my fifth gen and believe it or not my stopping power was way better. Anyway back to the subject, after alignment and stabilizer link correction brakes are almost obnoxiously good lol. Def recommend the dual piston caliper mod. And for those of us who aren't so mechanically inclined as to turn down the rotors or grind down the calipers. You can take the route I did and use stock 05 G35 rotors.uvh recommended even though I'm almost dying to know what it would look and FEEL like with the 12.6" 6 gen rotors.
04-30-2013, 04:37 PM
#115
Matt...How much pad overhang do you have? About a half inch?
Get as good of pics as you can.
Oh duh...Lol - 296mm is our size as well. (~11.6")
Thanks for the correction
Get as good of pics as you can.
Thanks for the correction
04-30-2013, 06:06 PM
#117
I went ahead and finally put my kit up for sale...all parts are new. I was the grinder in this virgin territory
http://forums.maxima.org/5th-generat...cessories.html
http://forums.maxima.org/5th-generat...cessories.html
05-11-2013, 05:28 PM
#118
Got them installed, just about to go for a test drive.
I didn't measure how much they were after I turned them down. I think I removed about 3mm overall, but I could have taken off more. The pedal feels a little soft in the driveway after bleeding, I'm wondering if the bigger bore master cylinder from the g would help. Also, anyone know if it is direct bolt on?
Or maybe I need different brake lines. I used the maxima stainless steel ones. I guess it's time for a test drive to be sure.
05-11-2013, 06:13 PM
#120
Just got back from the test drive and it feels pretty good. Braking is definitely improved. Also jumped up from 215 winters to 245 summers, so that helps a bit too LOL.
BTY, I got my whole setup used, I turned the rotors for the original owner, but as you can see from the rust stripe that shows I could have taken off more to match up with the edge of the pads better
BTY, I got my whole setup used, I turned the rotors for the original owner, but as you can see from the rust stripe that shows I could have taken off more to match up with the edge of the pads better