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G'Day,

I want to remove the ABS off my GTR. I assume I use a GTS-T master and run some new lines, but what happens to the attesa system, as it uses the ABS sensors. Will unplugging the abs unit interfere with the 4wd?

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https://www.sau.com.au/forums/topic/233476-r32-gtr-abs-removal/
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What makes you say that?

The ATTESSA unit has a number of inputs/outputs that also affect the ABS operation. So if you deactivate the ATTESSA system you render the ABS useless as well as the 4WD system. But this is not the same as saying you can/can't remove the ABS without upsetting the ATTESSA system.

Secondly, why would you want to revert to a GTS-T master cylinder? It is too small in bore size.

My mistake, looked through the manual and it seems that losing any of the abs actuators / motor relay / or circuit will just disable the abs not 4wd, as you said. I was thinking along the lines of the hicas where one thing kills the lot in that module.

A question for you as well,

What is the bore size of gtst and gtr master cylinders? I have 32'R brakes and I am unsure of the master cylinder matching, brakes are horrendous though..

Secondly, why would you want to revert to a GTS-T master cylinder? It is too small in bore size.

I thought the GTST and GTR Caliper's had the same size pistons, therefore, I thought I would use a GTST non ABS master cylinder with the three outlets. Is this not the way to go? What is the way to go?

Has anyone disconnected their ABS unit and done a launch to see if all 4 spin? I would but my engine is broken.

from http://nissans15.com/brakes.htm

Model Type Master Cylinder Diameter

S15 Spec R BM50 25.4mm

300zx turbo BM50/57 25.4 and 26.9mm used

R32 GT-T M-spec BM50 25.4mm

R33 GTST BM44 23.8mm

R32 GTR non Brembo BM50 25.4mm

R34 GTT ? ?

R32/33/34 Brembo* BM57 26.9mm

* GTR N1 Skylines apparently used the BM50 MC.

also this might be interesting, someone else chasing a 3-port 1" master cylinder.. http://www.sillbeer.com/2007/04/brake-mast...er-upgrade.html

But looking here http://www.ipixel.com.au/temp/bnr32n1bmc/bmc-46010-range.gif there is whole slew of different models used.

Looking at the bmc from the drivers side the model is towards the booster right next to where it says nissan. Last digits of the part number are stamped on the very end of the unit, for example mine are 05u20, ie 1".

Edited by heller44
from http://nissans15.com/brakes.htm

Model Type Master Cylinder Diameter

S15 Spec R BM50 25.4mm

300zx turbo BM50/57 25.4 and 26.9mm used

R32 GT-T M-spec BM50 25.4mm

R33 GTST BM44 23.8mm

R32 GTR non Brembo BM50 25.4mm

R34 GTT ? ?

R32/33/34 Brembo* BM57 26.9mm

* GTR N1 Skylines apparently used the BM50 MC.

also this might be interesting, someone else chasing a 3-port 1" master cylinder.. http://www.sillbeer.com/2007/04/brake-mast...er-upgrade.html

But looking here http://www.ipixel.com.au/temp/bnr32n1bmc/bmc-46010-range.gif there is whole slew of different models used.

Looking at the bmc from the drivers side the model is towards the booster right next to where it says nissan. Last digits of the part number are stamped on the very end of the unit, for example mine are 05u20, ie 1".

So the non M spec R32 GTS-T has what size master cylinder?

  • 5 years later...

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