Results 1 to 11 of 11

Thread: Brake system gurus... removing ABS?

  1. #1
    Registered User MWP's Avatar
    Join Date
    May 2002
    Location
    Adelaide
    Posts
    1,720

    Question Brake system gurus... removing ABS?

    Hi all,

    So i want to remove the ABS system from my 1990 Celica GT4.
    The factory setup has crossed fl-rr fr-rl circuits.

    Can I just bin all the factory lines, abs brick & combination/proportioning valves, and just run:
    - master1 out -> T -> front left & front right
    - master2 out -> rear prop valve -> T -> rear left & rear right

    Is it that simple?
    Or isn't that ideal / safe?

    Thanks.

  2. #2
    Non Compos Mentos Gammaboy's Avatar
    Join Date
    Jun 2008
    Location
    Brisbane
    Posts
    15,453
    Yes, you should be able to do just that.
    "Where can we get hold of a Vincent Black Shadow?" "Whats that?" "A fantastic bike," I said. "The new model is something like two thousand cubic inches, developing two hundred brake-horsepower at four thousand revolutions per minute on a magnesium frame with two styrofoam seats and a total curb weight of exactly two hundred pounds."

  3. #3
    Registered User
    Join Date
    Apr 2017
    Location
    Sydney
    Posts
    425
    Agreed, should be that simple.

    Might require engineering if registered. If not registered, should be OK. And are you planning on retaining the booster?

  4. #4
    Registered User MWP's Avatar
    Join Date
    May 2002
    Location
    Adelaide
    Posts
    1,720
    Thanks guys.
    Yup, i'll keep the factory master & booster.

  5. #5
    Opens GAZ914's Avatar
    Join Date
    Jan 2003
    Location
    Sydney, Australia
    Posts
    1,581
    Just be careful with brake bias front to rear.

    I did something similar on my N14 Pulsar SSS - no ABS though.
    Ended up with too much rear brakes (no proportioning valve) and ended up fitting an aftermarket prop valve to the rear and all good.

    My VT Commodore rally car also has no ABS now and it feels a bit rear biased - in this case it is a good thing
    Race Car: VT Commodore (Murray) coming soon!
    www.vsport.com.au

  6. #6
    Registered User TRD-MX62's Avatar
    Join Date
    Jun 2014
    Location
    melb
    Posts
    1,735
    Really don't get the whole remove the ABS thing, even 90's toyota ABS is better than most people can do.
    Quote Originally Posted by ALLMTR View Post
    the theory is the fuel pump is one of the only things that can fuck out on a diesel

  7. #7
    Registered User Shane001's Avatar
    Join Date
    Jul 2007
    Location
    Sydney, Australia
    Posts
    960
    Quote Originally Posted by TRD-MX62 View Post
    Really don't get the whole remove the ABS thing, even 90's toyota ABS is better than most people can do.
    Depends what you're doing it for. Had a mate a few years back still with ABS on an RX7 race car, ABS computer threw a spastic on the main straight at SMP and nearly put him in the wall. First thing I did with mine is rip the shit out lol.
    Last edited by Shane001; 15-05-18 at 08:33 PM.

  8. #8
    Non Compos Mentos Gammaboy's Avatar
    Join Date
    Jun 2008
    Location
    Brisbane
    Posts
    15,453
    90s abs is the suck on gravel.
    "Where can we get hold of a Vincent Black Shadow?" "Whats that?" "A fantastic bike," I said. "The new model is something like two thousand cubic inches, developing two hundred brake-horsepower at four thousand revolutions per minute on a magnesium frame with two styrofoam seats and a total curb weight of exactly two hundred pounds."

  9. #9
    Registered User MWP's Avatar
    Join Date
    May 2002
    Location
    Adelaide
    Posts
    1,720
    1990 Toyota ABS is suck everywhere. Really terrible.
    I'm also now using larger front brakes, and using Prius front uprights that have no wheel speed sensors.

    I'll be installing a Wilwood proportioning valve somewhere in the cabin.

  10. #10
    Down with ma homies Greg Rust's Avatar
    Join Date
    Dec 2006
    Location
    Perf
    Posts
    10,449
    Take caution when removing the abs brick as they can have stored fluid pressure in an accumulator. Bit of rag over the pipes.
    xw Falcon 393 full race cam, NGK spark plugs.

  11. #11
    Gimme six Schlitzes Beavis's Avatar
    Join Date
    Nov 2001
    Location
    Boston, MA
    Posts
    7,165
    Quote Originally Posted by MWP View Post
    Hi all,

    So i want to remove the ABS system from my 1990 Celica GT4.
    The factory setup has crossed fl-rr fr-rl circuits.

    Can I just bin all the factory lines, abs brick & combination/proportioning valves, and just run:
    - master1 out -> T -> front left & front right
    - master2 out -> rear prop valve -> T -> rear left & rear right

    Is it that simple?
    Or isn't that ideal / safe?

    Thanks.
    I had a '94 Pulsar GTi-R and that is exactly what I did. Worked fine.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •