Removing ABS

[r32king23]

I told you what to do already

So its just that simple? It won't mess up the AWD?

[skyline_addict]

I 2nd McFly and AndreP.

bending and flaring brake lines is an easy enough job with the right tools.

[JNS Performance]

No you just replace brake lines and put a gts non abs master cylinder in and bingo bango.

Did it on my GTR.

[Dragon Humper]

What`s the deal with the master, is it really that diff. from the non-ABS. This would be the first example I have ever heard of where the masters are diff.

EDIT: if the GTS master has a smaller bore (the front caliper bores are smaller, no?) then you will get less pedal feel and lockup will happen easier, you will need less pedal pressure for the same rotor clamping and less firewall flex but without the ABS you might not like it (I won`t, I like more pedal feel).

I asked Andrew about this and he said the same as McFly, etc... just unplug the ABS module, secure the plugs where they won`t get hurt and ignore the light on the dash (or pull it...LOL).

My car is for dragging as well and ABS won`t make it go any faster, weighs a fair bit and in my case, leaks profusely....so out it goes. Even a good used one is $200 (new is $900) and I would rather spend money on other safety equipment that will make me legal at an NHRA track.



Jon.

[Skym]

R32 GTR N1 didn't have ABS.

It might be the amount of connections for hard pipes that are different on side of master cylinder with ABS vs Non ABS brake master cylinder setup. Just like Braden said, use R32 GTS-T Non ABS hard pipes, Non ABS master cylinder, etc.

Look at how many hardpipes on ABS setup (firewall) -

http://www.japangeneralmotor.com/engines/RB26DET-SkylineGTRR.jpg

Then amount of hardpipes on Non ABS setup (firewall) -

http://got-jdm.com/images/RB26RWD.jpg

Also as you probably already know brake master cylinder is usually changed when fitting bigger 6pot front, 4pot rear brake calipers.

ABS on most cars is single stage (single pressure setting) and when used on racetrack, wheels lockup and exit racetrack if late braking. It's interesting watching Porsches in Australia with ABS do exactly that.

[Dragon Humper]

Another thing I thought of (and has happened to me) is that the ABS can become confused on the track and simply shut off. If your driving style and\or you have a brake issue that the ABS has been band-aiding then if the ABS shuts off you are screwed. No serious track car uses ABS. It`s only good for getting you out of trouble if you don`t know how to ease off and drive according to road conditions.



Jon.

[Skym]

My Skyline never had ABS and the only time I had brake lockup problems was when brake hose leaked on caliper side (drivers side) or tyres hit white paint on road when emergency stopping. Some don't pump the brakes, which is what ABS does to stop brake lockup during a emergency stop.

[iroc07]

Don't know if this was mentioned, but the GTR MC only has 2 outlets, thats why the GTS non-ABS MC works well, cause it has all 3 that you will need. Front left, Front right, and rear. I believe a Z32 master cylinder will work as well, because they use a 3 port MC, but one is plugged off, so you just unplug it and use it.

[Dragon Humper]

If that's all is is then that's easy, just T the front and I already have a proportioning valve from SSBC that will help me fine tune the rear bias once AMS gets off their ass and gets the R33 Brembo rotor and caliper spacer kit going.


Jon.

[NismoS-tune]

Gonna revive this. I have to change MC due to larger brakes and I don't mind dropping ABS. The GTST MC is not an option since it's too small. Is there an aftermarket MC that disables ABS or am I just better off getting a R34 MC and capping lines?

[r32king23]

I'm just using the Master Cylinder I have and just putting T fittings in. But I don't need much brakes considering its a drag car.

[NismoS-tune]

I'm just using the Master Cylinder I have and just putting T fittings in. But I don't need much brakes considering its a drag car.

I was thinking that but I need the best brake performance I can get out of what I have for the autocross build... I'll look into an R34 BMC maybe.

[Skym]

Forgot to say, I use a aftermarket master cylinder on my R32 Skyline without ABS. It's "Qualitee International" brand. It feels better than stock master cylinder.

Can get Qualitee International parts from Summit Racing Equipment -

http://www.summitracing.com/search/brand/Qualitee-International/

For Autocross you could remove brake booster, single brake master cylinder setup and run 2x aftermarket racespec brake resouvoirs, 2x brake master cylinders, etc, 1x clutch resouvoir setup, like found in engine bay on this SuperGT R32 GTR racecar -

http://3.bp.blogspot.com/_vhpEGyEVhes/Sr_S7kaTQDI/AAAAAAAAB-8/JLoplLmEgNU/s1600-h/IMG_2882.JPG

Probably save some weight in the process by removing brake booster, etc.

I think Tilton sell the triple resouvoir setup, brake pedal assembly with master cylinders that fits inside cabin that keeps master cylinders away from engine bay heat.

Tripple resouvoir setup -

http://www.tiltonracing.com/content.php?page=list2&id=501&m=b

Brake / clutch pedal assembly -

http://www.tiltonracing.com/content.php?page=list2&id=400&m=b

I think the brake bias setup can be from left to right on same axle for front, rear of car.

[judasentinel]

I just found out that the Master Cylinder on my car has THREE brake lines coming out of it. Does this mean that it is a NON-ABS MC? In addition to that, I dont have any ABS pump/reservoir/canister in the engine bay (supposed to be around the exhaust side by the firewall, right?).

Also, my GTR has an N1 aero kit installed on it. And I read in one of the posts by Skym on here that the R32 N1 GTR came without ABS. Could it be that I have an N1 GTR? The engine has been swapped out, BTW.

How does one find out if that is the case with my car?

[NismoS-tune]

3 brake lines normally mean non ABS. The ABS control block normally splits the front lines so you'd only see 2 coming from the BMC.