Brake pedal ratio - GT-R Register - Official Nissan Skyline and GTR Owners Club forum

M SKinner · 6th October 2008, 05:47 PM

Does anyone know the brake pedal ratio on an R32 GT-R? Ive searched the forum plus trawled through a service manual with no luck!

Chris Wilson · 16th October 2008, 03:35 PM

Hmmm, there's a proper question, someone removing the servo then?

I don't know, I had to physically measure my GTS-t R33 pedal, and it wasn't much leverage. I managed to move the pushrod hole up a bit to do what I wanted, but ended up with a remote servo on the front brakes. The reason you see Leviathan Bathurst cars with no servo is they use bespoke pedal boxes with a lot longer pedal with a much increased pedal ratio. What are you attempting, I live and breath this sort of thing.

M SKinner · 16th October 2008, 04:01 PM

Im ditching the servo, as the engine wont fit with it in place and replacing it with a Tilton pedal box. I've spoken to them about the problem of pedal effort and they have recommended i use their 6.2:1 ratio pedal box, and specified the master cylinder bore sizes to suit. Should be OK as both tilton and Andy Robinson from Robinson Race cars, tilton, and stop-tech have said it will stop fine with this setup.

6th October 2008, 05:47 PM	#1 (permalink)
M SKinner GTROC Member Join Date: Feb 2007 Location: Croydon, Surrey Posts: 601	Brake pedal ratio Does anyone know the brake pedal ratio on an R32 GT-R? Ive searched the forum plus trawled through a service manual with no luck! __________________ Matt Skinner R32 GTS-4, R32 GT-R project

16th October 2008, 04:01 PM	#3 (permalink)
M SKinner GTROC Member Join Date: Feb 2007 Location: Croydon, Surrey Posts: 601	Im ditching the servo, as the engine wont fit with it in place and replacing it with a Tilton pedal box. I've spoken to them about the problem of pedal effort and they have recommended i use their 6.2:1 ratio pedal box, and specified the master cylinder bore sizes to suit. Should be OK as both tilton and Andy Robinson from Robinson Race cars, tilton, and stop-tech have said it will stop fine with this setup. __________________ Matt Skinner R32 GTS-4, R32 GT-R project

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16th October 2008, 03:35 PM	#2 (permalink)
Chris Wilson GTR Register Member Join Date: Aug 2001 Location: Shropshire Posts: 1,487	Hmmm, there's a proper question, someone removing the servo then? I don't know, I had to physically measure my GTS-t R33 pedal, and it wasn't much leverage. I managed to move the pushrod hole up a bit to do what I wanted, but ended up with a remote servo on the front brakes. The reason you see Leviathan Bathurst cars with no servo is they use bespoke pedal boxes with a lot longer pedal with a much increased pedal ratio. What are you attempting, I live and breath this sort of thing.