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R35 GTR Brakes on Z34

Looking for some input from you guys. I've been toying with the idea of swapping my brakes on my Z for some other ones. I've looked into an OEM+ upgrade

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Old 11-24-2019, 11:03 PM   #1 (permalink)
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Default R35 GTR Brakes on Z34

Looking for some input from you guys. I've been toying with the idea of swapping my brakes on my Z for some other ones. I've looked into an OEM+ upgrade being the R35 GTR. I know they have a completely different mounting design (top mounted 2+1 bolts) vs. the stock Z brakes (rear mounted 2 bolts). Instead of just doing that as a swap since I know that won't work, it got me thinking what about the spindle? Can the spindle, wheel bearing & brake assembly be swapped from the R35 to the Z34? Any input would be appreciated!
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Old 11-25-2019, 06:48 AM   #2 (permalink)
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If you're willing to go that far (and all those parts come with GTR tax $$$) why not just get a set of AP/Brembo/etc calipers that are made for the Z?

Otherwise, ask Z1 since they swapped to GTR parts for their Time Attack car.
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Old 11-25-2019, 10:58 AM   #3 (permalink)
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R35 GT-R brakes are very different in front and rear bias compare to 370z bias. Z1 converted to GT-R brakes but they also have the balance bar to set the correct bias. In short, don't do it.
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Old 11-25-2019, 01:35 PM   #4 (permalink)
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Quote:
Originally Posted by NorthStyle View Post
If you're willing to go that far (and all those parts come with GTR tax $$$) why not just get a set of AP/Brembo/etc calipers that are made for the Z?

Otherwise, ask Z1 since they swapped to GTR parts for their Time Attack car.
I was wondering since I found a set of brake callipers, pads and rotors from an R35 for reasonably cheap, I wondered how difficult it would be to mount them.

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Originally Posted by andy_meng1024 View Post
R35 GT-R brakes are very different in front and rear bias compare to 370z bias. Z1 converted to GT-R brakes but they also have the balance bar to set the correct bias. In short, don't do it.
I understand they are different size callipers, and the amount of fluid to push the pistons different from the R35 to Z34, however correcting the bias isn't hard to do. Countless BBK's require the same thing. If you upgrade to a BBK on the front of cars, 95% of the time, the bias has changed, and even sometimes resulting in poorer stopping distances. If you pull the ABS fuse and stomp on the brakes, your tires should lock up at the same time. If they don't, you can purchase a proportioning valve to fix that, which is very inexpensive. Here is a link to a $35 Wilwood unit: https://amzn.to/2DeqFTZ
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Old 11-25-2019, 02:04 PM   #5 (permalink)
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Originally Posted by milmast View Post
Looking for some input from you guys. I've been toying with the idea of swapping my brakes on my Z for some other ones. I've looked into an OEM+ upgrade being the R35 GTR. I know they have a completely different mounting design (top mounted 2+1 bolts) vs. the stock Z brakes (rear mounted 2 bolts). Instead of just doing that as a swap since I know that won't work, it got me thinking what about the spindle? Can the spindle, wheel bearing & brake assembly be swapped from the R35 to the Z34? Any input would be appreciated!
Is this for purely show purposes? Or is this for performance purposes? My two cents....If this is just for a street car, it's not worth the time and effort it will take to find and install everything respectively.
If track car only, I feel there are better options that won't require as much time/$$$ investment (spit balling here on the $$$, but I'm willing to bet that anything with GTR attached to it will be elevated in cost), that will perform on par or better.
If it's a mix of street/track driving, not worth it.

Finally if this is being done purely for car resume purposes and for show conversation pieces, I feel the desired effect may be achieved, but the return on investment wouldn't be worth it to me. Good luck and if you are stuck on doing this, make sure to do it right the first time and don't try cutting corners.
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Old 11-25-2019, 07:01 PM   #6 (permalink)
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Quote:
Originally Posted by milmast View Post
I was wondering since I found a set of brake callipers, pads and rotors from an R35 for reasonably cheap, I wondered how difficult it would be to mount them.







I understand they are different size callipers, and the amount of fluid to push the pistons different from the R35 to Z34, however correcting the bias isn't hard to do. Countless BBK's require the same thing. If you upgrade to a BBK on the front of cars, 95% of the time, the bias has changed, and even sometimes resulting in poorer stopping distances. If you pull the ABS fuse and stomp on the brakes, your tires should lock up at the same time. If they don't, you can purchase a proportioning valve to fix that, which is very inexpensive. Here is a link to a $35 Wilwood unit: https://amzn.to/2DeqFTZ
LMAO, you need to check yourself before you wreck yourself. It is not that simple. Z1 did a Bosch ABS upgrade as well. That is another $10k upgrade! I believe Valkyrie runs the same system in their Z but with a Stoptech Trophy BBK. Most here either stay with the OEM system or move to a BBK upgrade front and rear so that brake bias is not an issue.

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Old 11-25-2019, 09:16 PM   #7 (permalink)
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The Z34 and R35 launched pretty much at the exact same time. If swapping brakes was as easy as adding a proportioning valve we'd have seen it a long time ago and there would be tons of conversions out there by now with tons of info on the subject
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Old 11-25-2019, 09:49 PM   #8 (permalink)
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You guys make it seem like brakes are super complicated. I understand what Z1 did, but I'm wondering why they went that route. I'm not asking for your opinion if you think it can be done. Brakes aren't complex. If the R35 has those brembos, it can't be that hard to get around to retrofitting them to a Z34. It sure may be costly but that's not what I'm asking. If it's a matter of just buying a spindle, bearing, caliper, rotor and pads, that's not that bad. No offence to Z owners, but 95% of them slam their Zs, put Tomei's on, and CR2Ps.

If I wanted some great brakes for the price, I'd stick with the Akebonos and put better rotors and pads on, maybe even an aftermarket BBK designed for the Z, but that's not what I'm asking. I'm asking, what needs to be done to get the swap done? Can the ABS unit from the R35 be swapped onto the Z if the Z ABS pump can't keep up? Does it need a brake master? Do the lines need to be completely redone with large tubing?
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Old 11-25-2019, 09:53 PM   #9 (permalink)
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I guess you will need to figure all that out then as Jarblue said if it was easy or simple it would have been done by now. Good luck!

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Old 11-25-2019, 09:59 PM   #10 (permalink)
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Originally Posted by milmast View Post
No offence to Z owners, but 95% of them slam their Zs, put Tomei's on, and CR2Ps.
I don't suppose it would do any good to ask you where you got those numbers?

Maybe you shouldn't continue to spout misinformation. If this brake conversion were so damn easy it would have been done by some other idiot in their garage before.

Maybe you can be the first
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Old 11-25-2019, 10:10 PM   #11 (permalink)
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If you’re gonna ask for information or opinion on a desired subject, you probably shouldn’t bash the members of a forum you’re asking the question on if you don’t like the information provided.

But what do I know, since mathematically speaking, it’s a high probability that I’m in the 95% of owners you previously mentioned. Happy hunting for additional information and good luck down the rabbit hole Alice.


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Old 11-25-2019, 10:27 PM   #12 (permalink)
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Quote:
Originally Posted by Hotrodz View Post
I guess you will need to figure all that out then as Jarblue said if it was easy or simple it would have been done by now. Good luck!

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I strongly disagree with that. How many people have access to very cheap R35 parts..? Probably not a lot, hence why it either hasn't been documented, or hasn't been attempted. The spindles alone from the R35s are $1000 each. It very well may be easy and simple, but if its stupid expensive, that single part will deter people from attempting it as it could be money down the drain whereas BBKs like AP racing have been tested ample times on the Z platform.


Quote:
Originally Posted by DaveZ03 View Post
If you’re gonna ask for information or opinion on a desired subject, you probably shouldn’t bash the members of a forum you’re asking the question on if you don’t like the information provided.

But what do I know, since mathematically speaking, it’s a high probability that I’m in the 95% of owners you previously mentioned. Happy hunting for additional information and good luck down the rabbit hole Alice.

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I'm not bashing anyone, I'm just stating a fact that I'm asking if it has been attempted before, not whether it is a good bang for buck upgrade. Also, I'm not getting information, I'm getting opinions. Information would be giving part numbers, redirecting me to other posts regarding this brake swap, or maybe even a YT video outlining why it will or won't work.

On another note, I found on SPL's website two different parts for the FUCA, which makes me wonder if the control arm from the R35 would also need to be swapped over. Would it then also make the front track wider?

Here are the part numbers for the front suspension on an R35: https://www.courtesyparts.com/auto-p...omponents-scat
Here are the part numbers for the front suspension on a Z34:
https://www.courtesyparts.com/auto-p...omponents-scat

The bolt orientation for the FUCA is different (at least in the pictures) of the exploded views above.
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Old 11-25-2019, 10:29 PM   #13 (permalink)
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Quote:
Originally Posted by milmast View Post
You guys make it seem like brakes are super complicated. I understand what Z1 did, but I'm wondering why they went that route. I'm not asking for your opinion if you think it can be done. Brakes aren't complex. If the R35 has those brembos, it can't be that hard to get around to retrofitting them to a Z34. It sure may be costly but that's not what I'm asking. If it's a matter of just buying a spindle, bearing, caliper, rotor and pads, that's not that bad. No offence to Z owners, but 95% of them slam their Zs, put Tomei's on, and CR2Ps.

If I wanted some great brakes for the price, I'd stick with the Akebonos and put better rotors and pads on, maybe even an aftermarket BBK designed for the Z, but that's not what I'm asking. I'm asking, what needs to be done to get the swap done? Can the ABS unit from the R35 be swapped onto the Z if the Z ABS pump can't keep up? Does it need a brake master? Do the lines need to be completely redone with large tubing?


They did it because Nissan is paying.


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Old 11-25-2019, 10:31 PM   #14 (permalink)
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Quote:
Originally Posted by andy_meng1024 View Post
They did it because Nissan is paying.


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Old 11-25-2019, 10:52 PM   #15 (permalink)
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LMFAO, you are free to disagree as much as you want but you should not assume that money is a limiting factor as you have no clue to my or many others finance and that we having been stupid stuff with this platform for years. Many of us who are commenting actually participate in Motorsports and try, fail and succeed in finding a competitive advantage regardless of cost. So disagree all you want but you might want to limit your assumptions about those who comment. Obviously if we had information on what you are asking we would provided you with more. Most of us will stay tuned and provide feedback back even if we don't agree or think you will succeed. Why, because talk is cheap and we might be proven wrong and we are good with that as long as it moves the community forward. So if you don't want the strong tone that is coming forward then I would reframe your tone and comments regarding your assumptions about those of us that do possess some knowledge about the Z.

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