Brake discs technical question...
07-02-10, 08:07 AM
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Brake discs technical question...
Hi everyone...
I have a technical question about disc brake sizes compatible on our FD3S.
I'm planning on getting myself some Wilwood calipers with 234mm / 30mm brake discs...
Here is my question, when talking about disc sizes, we often mention the "diameter" and the "thickness"... but also the "height"!!!
I wanted to know which heights were compatible on the FD3S, is this really important? Does it have to be one exact height.
I've seen that 350Z (5 holes 4x114.3) discs were 224mm (diameter) / 30mm (thickness) and 49mm (height). For example, would it be possible to fit an EBC Turbo Groove disc made for 350Z in sizes mentioned above on a RX7 FD3S, knowing that the calipers would be changed...????
What do you guys think?
I have a technical question about disc brake sizes compatible on our FD3S.
I'm planning on getting myself some Wilwood calipers with 234mm / 30mm brake discs...
Here is my question, when talking about disc sizes, we often mention the "diameter" and the "thickness"... but also the "height"!!!
I wanted to know which heights were compatible on the FD3S, is this really important? Does it have to be one exact height.
I've seen that 350Z (5 holes 4x114.3) discs were 224mm (diameter) / 30mm (thickness) and 49mm (height). For example, would it be possible to fit an EBC Turbo Groove disc made for 350Z in sizes mentioned above on a RX7 FD3S, knowing that the calipers would be changed...????
What do you guys think?
07-02-10, 10:14 AM
#2
Anything is possible with enough time and money. Whether its a good idea is another topic of debate. 
You will need to clarify what you mean by "height". Are you talking about the hub area?
224mm diameter rotors are not large enough to make the cost of the development effort sufficient. You are welcome to spend some time search old posts or check the Suspension archives and look for the old M2 big brake kit which used rotors around that size and Wilwood calipers to fit under the stock wheels. Most people these days have already upgraded to 17" wheels and can fit the larger 330mm rotors readily available in kit form from StopTech, AP, Wilwood, RacingBrake, Endless etc etc.
Why re-invent the wheel?
Beyond the discussion of rotor dimensions, you also need to consider the piston sizing in the calipers and how that will affect the brake bias. Keep researching and learning.
You will need to clarify what you mean by "height". Are you talking about the hub area?
224mm diameter rotors are not large enough to make the cost of the development effort sufficient. You are welcome to spend some time search old posts or check the Suspension archives and look for the old M2 big brake kit which used rotors around that size and Wilwood calipers to fit under the stock wheels. Most people these days have already upgraded to 17" wheels and can fit the larger 330mm rotors readily available in kit form from StopTech, AP, Wilwood, RacingBrake, Endless etc etc.
Why re-invent the wheel?
Beyond the discussion of rotor dimensions, you also need to consider the piston sizing in the calipers and how that will affect the brake bias. Keep researching and learning.
07-02-10, 11:03 AM
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Oups... Sorry... I meant 324mm diameter rotors...! Thanks for the reply.
What I mean by "height" is the height of the rotor when you lay it flat on a table for example.
I think it is 67mm on stock rotors so I was wondering if smaller height could fit...???
What I mean by "height" is the height of the rotor when you lay it flat on a table for example.
I think it is 67mm on stock rotors so I was wondering if smaller height could fit...???
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