Jump to content
SAU Community

Recommended Posts

kaaz 1.5

do it and you can thank me later.

shimming's good fun if you own a beat up 32, but if you want it to last, do it properly. Put it this way... ALL the power you make has to go through it. If you wanna wager that on a $1.50 shim go nuts.

shimming just increases the bite point of your viscous, which means there's still slip, as time goes on it'll wear down and cark your diff. Guaranteed. Unless you're prepared to pull down and flush pumpkins after every track day or major fang session.

Been weighing up getting a 1.5way diff or r33 gtr brakes on the car.

Which to do....

you could just drive normally, you know... like when you're not living your life a quarter mile at a time?

Been weighing up getting a 1.5way diff or r33 gtr brakes on the car.

Which to do....

diff before brakes. GTSt brakes aren't that shabby compared to 33 GTR brakes. GTSt diff is pox compared to 1.5.

percentage improvement and smile factor is much higher on diff.

Brake Rotor / Caliper information

--------------------------------------------------------------------------------

R32 GTST

Master Cylinder diam (mm) - 25.4 area 506.71mm^2Front Caliper Piston(diam x qty) - 40.4 ×4 = 5127.58mm^2

Front rotors (diam x thk) - 280×30

Rear Caliper Piston(diam x qty) - 38.18×2 = 2289.78mm^2 ratio FR = 2.239

Rear Rotors (diam x thk) - 297×18

total 7417.36 brake to master ratio 14.63

R33 GTST

Master Cylinder diam (mm) - 23.8 444.88mm^2Front Caliper Piston(diam x qty) - 40.4 ×4 = 5127.58mm^2

Front rotors (diam x thk) - 296×30

Rear Caliper Piston(diam x qty) - 38.18×2 = 2289.78mm^2 ratio FR = 2.239

Rear Rotors (diam x thk) - 297×18

Total area 7417.36mm^2 brake to master ratio 16.67

R32 GTR (Non V-Spec,)

Master Cylinder diam (mm) - 25.4

Front Caliper Piston(diam x qty) - 40.4 ×4

Front rotors (diam x thk) - 296×32

Rear Caliper Piston(diam x qty) - 38.18×2

Rear Rotors (diam x thk) - 297×18

R32 GTR V-Spec / R33 / 34 GTR with Brembos

Master Cylinder diam (mm) - 26.9 568.32mm^2Front Caliper Piston(diam x qty) - (44+3Cool×2 ... leading pistons smaller then trailing 5309.29mm^2

Front rotors (diam x thk) - 324×30

Rear Caliper Piston(diam x qty) - 40×2 2513.27mm^2 ratio FR = 2.1125

Rear Rotors (diam x thk) - 300×22

total 7822.56 brake to master ratio 13.76

This is the ratio of master piston movement to overall brake pad movement

R32/GTR calliper ratio 15.43

R33/GTR calliper ratio 17.58

So there isn’t much difference between the Brembos and the std Nissan R32/33 GTST calipers and R32 GTR callipers

Oh...and an old favourite that seems to be a good practical test of what the theory suggests....

Car & Driver did a test a few years ago ...Test Car was a WRX (US Spec which only uses two piston sliding caliper, not as good as Nissan 4 spot or later Model WRX 4 pots)

So tested kits were, std car, std car with upgraded pads and fluid, Brembo F50 Kit, Brembo Lotus Kit (Similar to as fitted to GTRs, 44/38mm pistons), Stoptech it and Prodrive Kit (Alcon)

Stopping Distances 70mph - 0 , 3 Stop

Brembo F50;_____________ 185 / 183 (Average / Best)

Brembo Lotus; ______________ 200 / 196

Prodrive; __________________ 198 / 194

StopTech;__________________ 187 / 186

Stock; ____________________ 205 / 196

Stck with pads and fluid; ____187 / 184

The above figures are all in feet, one stop difference between pad and fluid upgrade to crappy sliding caliper brake setup and massive Brembos is 1 ft...lol 30cms And over 3 stops the average is 2 ft...lol 60cms

So you can see the one stop max of the upgraded pads and fluid is damn good when you consider the $$$ to % difference.

Stopping Distances 100mph - 0 , 25 Stop

Brembo F50; _____________ 299 / 288 (Average / Best)

Brembo Lotus; ______________305 / 294

Prodrive; __________________ 308 / 295

StopTech;__________________ 297 / 290

Stock;_____________________ 340/317

Stck with pads and fluid;_____316/299

Not the world of difference you would be led to believe by the "you need 6pot caliper 343mm rotor crowd."

Specs of the kits:

Rotor Weight (pounds) Size in inches (diam / thk)

Brembo F50;.................15.8......................... .13.1 / 1.3

Brembo Lotus;..............12.9.......................... 12.9 / 1.1

Prodrive;......................16.5............... ............13.0 / 1.1

StopTech;...................13.9.................. ........12.9 / 1.1

Stock;.................. ......14.2..........................11.6 / 0.9

Caliper Weight , Piston Size, (mm)

Brembo F50;..........8.6 pounds...........40 / 44, Leading / Trailing

Brembo Lotus;.......6.8.......................36 / 40

Prodrive;...............9.1..................... 34.9 / 41.3

StopTech;.............9.3.....................36 / 40

Stock;.................10.8.................. .43 / 43

...and COST!!!

Brembo F50;.......................US$2,995

Brembo Lotus;.....................US$2,595

Prodrive;.............................US$1,999

StopTech;...........................US$1,695

Stock with pads & fluid;....... US$130

R32 GTST

Front rotors (diam x thk) - 280×30

R32 GTR (Non V-Spec,)

Front rotors (diam x thk) - 296×32

R33 GTST

Front rotors (diam x thk) - 296×30 Different caliper to R32 GTR but same disc diameter.

R32 GTR V-Spec / R33 / 34 GTR with Brembos

Front rotors (diam x thk) - 324×30

R34 GTT

Front rotors (diam x thk) - 310x30

The calipers that suit larger diameter discs have longer mounting legs to space the caliper out further.

quote from: Brake Rotor / Caliper information - GTRCanada - Canada's premier skyline enthusiasts club

you could just drive normally, you know... like when you're not living your life a quarter mile at a time?

diff before brakes. GTSt brakes aren't that shabby compared to 33 GTR brakes. GTSt diff is pox compared to 1.5.

percentage improvement and smile factor is much higher on diff.

hmm fair go, will look into diffs

The ford rim spec, I don't have a 33.

33 waslike $1500 full comp agreed value of $25k and heavily modified (all mods listed)

i see. what ford is that?

mmm the new xr6 turbos black on black with the red brembos = tuff

Edited by R-SPEC

isn't that the dude in canada who converted his R32 gtr to R34 look using factory replacement fenders stitched in n stuff?

lol nfi, thats the only pics i stumbled across. Apparently he did it in order to have the ultimate handling for his r32 gtr.

Brake Rotor / Caliper information

--------------------------------------------------------------------------------

R32 GTST

Master Cylinder diam (mm) - 25.4 area 506.71mm^2Front Caliper Piston(diam x qty) - 40.4 ×4 = 5127.58mm^2

Front rotors (diam x thk) - 280×30

Rear Caliper Piston(diam x qty) - 38.18×2 = 2289.78mm^2 ratio FR = 2.239

Rear Rotors (diam x thk) - 297×18

total 7417.36 brake to master ratio 14.63

R33 GTST

Master Cylinder diam (mm) - 23.8 444.88mm^2Front Caliper Piston(diam x qty) - 40.4 ×4 = 5127.58mm^2

Front rotors (diam x thk) - 296×30

Rear Caliper Piston(diam x qty) - 38.18×2 = 2289.78mm^2 ratio FR = 2.239

Rear Rotors (diam x thk) - 297×18

Total area 7417.36mm^2 brake to master ratio 16.67

R32 GTR (Non V-Spec,)

Master Cylinder diam (mm) - 25.4

Front Caliper Piston(diam x qty) - 40.4 ×4

Front rotors (diam x thk) - 296×32

Rear Caliper Piston(diam x qty) - 38.18×2

Rear Rotors (diam x thk) - 297×18

R32 GTR V-Spec / R33 / 34 GTR with Brembos

Master Cylinder diam (mm) - 26.9 568.32mm^2Front Caliper Piston(diam x qty) - (44+3Cool×2 ... leading pistons smaller then trailing 5309.29mm^2

Front rotors (diam x thk) - 324×30

Rear Caliper Piston(diam x qty) - 40×2 2513.27mm^2 ratio FR = 2.1125

Rear Rotors (diam x thk) - 300×22

total 7822.56 brake to master ratio 13.76

This is the ratio of master piston movement to overall brake pad movement

R32/GTR calliper ratio 15.43

R33/GTR calliper ratio 17.58

So there isn’t much difference between the Brembos and the std Nissan R32/33 GTST calipers and R32 GTR callipers

Oh...and an old favourite that seems to be a good practical test of what the theory suggests....

Car & Driver did a test a few years ago ...Test Car was a WRX (US Spec which only uses two piston sliding caliper, not as good as Nissan 4 spot or later Model WRX 4 pots)

So tested kits were, std car, std car with upgraded pads and fluid, Brembo F50 Kit, Brembo Lotus Kit (Similar to as fitted to GTRs, 44/38mm pistons), Stoptech it and Prodrive Kit (Alcon)

Stopping Distances 70mph - 0 , 3 Stop

Brembo F50;_____________ 185 / 183 (Average / Best)

Brembo Lotus; ______________ 200 / 196

Prodrive; __________________ 198 / 194

StopTech;__________________ 187 / 186

Stock; ____________________ 205 / 196

Stck with pads and fluid; ____187 / 184

The above figures are all in feet, one stop difference between pad and fluid upgrade to crappy sliding caliper brake setup and massive Brembos is 1 ft...lol 30cms And over 3 stops the average is 2 ft...lol 60cms

So you can see the one stop max of the upgraded pads and fluid is damn good when you consider the $$$ to % difference.

Stopping Distances 100mph - 0 , 25 Stop

Brembo F50; _____________ 299 / 288 (Average / Best)

Brembo Lotus; ______________305 / 294

Prodrive; __________________ 308 / 295

StopTech;__________________ 297 / 290

Stock;_____________________ 340/317

Stck with pads and fluid;_____316/299

Not the world of difference you would be led to believe by the "you need 6pot caliper 343mm rotor crowd."

Specs of the kits:

Rotor Weight (pounds) Size in inches (diam / thk)

Brembo F50;.................15.8......................... .13.1 / 1.3

Brembo Lotus;..............12.9.......................... 12.9 / 1.1

Prodrive;......................16.5............... ............13.0 / 1.1

StopTech;...................13.9.................. ........12.9 / 1.1

Stock;.................. ......14.2..........................11.6 / 0.9

Caliper Weight , Piston Size, (mm)

Brembo F50;..........8.6 pounds...........40 / 44, Leading / Trailing

Brembo Lotus;.......6.8.......................36 / 40

Prodrive;...............9.1..................... 34.9 / 41.3

StopTech;.............9.3.....................36 / 40

Stock;.................10.8.................. .43 / 43

...and COST!!!

Brembo F50;.......................US$2,995

Brembo Lotus;.....................US$2,595

Prodrive;.............................US$1,999

StopTech;...........................US$1,695

Stock with pads & fluid;....... US$130

R32 GTST

Front rotors (diam x thk) - 280×30

R32 GTR (Non V-Spec,)

Front rotors (diam x thk) - 296×32

R33 GTST

Front rotors (diam x thk) - 296×30 Different caliper to R32 GTR but same disc diameter.

R32 GTR V-Spec / R33 / 34 GTR with Brembos

Front rotors (diam x thk) - 324×30

R34 GTT

Front rotors (diam x thk) - 310x30

The calipers that suit larger diameter discs have longer mounting legs to space the caliper out further.

quote from: Brake Rotor / Caliper information - GTRCanada - Canada's premier skyline enthusiasts club

GTSt brakes aren't that shabby compared to 33 GTR brakes.

wow you made a huge fuckoff tl;dr post to say exactly what I said in 10 words 15 mins earlier. gratz.

Guest
This topic is now closed to further replies.



  • Similar Content

  • Latest Posts

    • Hi. Sry iam not a mechanic and iam not at the car atm so i dont know 100% but they told they measure those and even try to change those. AFM they have two. Coils are new a they have my old one too. Plugs too. ECU...we have 25 NEO stock and Nistune 25 NEO.   But i dont know if any one those could be the problem and why/if/what can cause this, Only thing they did not check is fuel...but that walbro 255 is new(like 1,5 years)... That fuel pressure gauge idk...but i let them know Any suggestions?   EDIT: how can they know if it is like you say he ECU pull power when it reaches a specific boost level that is too high? Tha car has boost controler
    • Can you clarify what you mean by boost cut, do you mean it misfires both when under load (driving) and when stationary and out of gear? Or does the ECU pull power when it reaches a specific boost level that is too high (boost control issue)? Does it occur at idle with no throttle? When you say "the ECU is OK", what ECU is it and why do you think it is OK? Have you used the NEO ECU, and if so do you have a MAP sensor attached? Same for the AFM, why do you think it is OK? Do you have any way to put a fuel pressure gauge on it (even just a mechanical one between the fuel filter and fuel rail)?
    • Hi.. Just another problem. So maybe you can help. I(my mechanic) done swap from my RB20DE NEO to RB25DET NEO. Everything is OK but we have a boost cut. Coils/Plugs are ok...AFM is ok. ECU is ok. I have Walbro 255 but it "changed" sound few months ago(you can hear it ouside) you did not hear that when it was new(maybe faulty?) Sooo...what now? What can cause this boost cut? It is even when you standing still...
×
×
  • Create New...