LS400 Front Brake Upgrade..The Easy way!

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Thread: LS400 Front Brake Upgrade..The Easy way!

  1. #1
    EFI Certified Tuner dejacky's Avatar
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    Thumbs up LS400 Front Brake Upgrade..The Easy way!

    The Lexus LS400 brake calipers (1995-2000 models) are more powerful 4-piston calipers that are also lightweight compared to stock sc300/sc400 and mkiv Supra NA calipers. They stop these cars a lot better, were designed to stop the ls400 cars from 150pmh to ZERO mph, and are easy to install. Here is how I did mine:


    1) Remove your wheels and lug nuts

    2) Our Brake Calipers are held in place by TWO 17mm bolts. Unscrew these and the brake caliper is now loose and slides off the brake rotor (aka disc). Since the lug nuts are off and you've just removed the brake caliper, there is nothing securing the brake rotor (aka disc) in place. So, slide the brake rotor off the wheel studs and replace it with a LS400 brake rotor.



    3) Put the wheel lug-nuts on and hand tighten to keep the new LS400 brake rotor steady & secure.

    4) Make sure you Hammered/Bent/Cut parts of the sc300 brake dust shield to fit the LS400 brake calipers & rotors.



    5) Place LS400 calipers on the rotor and align the TWO mounting holes. Install TWO LS400 17mm Brake Caliper bolts (shorter than sc300 ones) and torque them to 87 ft/lbs of torque.

    6) Disconnect your stock brake lines from the sc300 brake caliper (2-piston inferior design) and screw that same bolt-brake line into your LS400 calipers = very simple. You're just plugging the same brake line, that was in the sc300 caliper, into the LS400 caliper.



    7) Bleed your brakes properly!
    Last edited by dejacky; 03-06-2007 at 08:10 PM.
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    SupraForums Member Anthracite93's Avatar
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    nice pics/write-up

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    2JZ-Phantom SealSupra-6's Avatar
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    dejacky, will these caliper clear the stock rim size or do we need to upgrade to 17 inch rims?

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    !black MadMaxx's Avatar
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    Welcome to 3 years ago

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    SupraForums Member Suprazzz's Avatar
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    Good info.Now I just need to find the calipers and rotors.

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    SupraForums Member javi1012's Avatar
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    same here clublexus here i come

  8. #7
    EFI Certified Tuner dejacky's Avatar
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    Quote Originally Posted by MadMaxx View Post
    Welcome to 3 years ago
    I was never satisfied with any of the previous write ups that didn't show good pictures of what exactly needed to be done ;p . You will need at least ls400 wheels (16inch) or 17inch + wheels to clear these brake calipers.

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    does everything bolt up perfect because in other write up it saids you have to trim part of the caliper to fit properly and also you have to change the brake lines but from you write up it seems like everything fits perfectly?

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    2JZ-Phantom SealSupra-6's Avatar
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    you have to trim the brake dust shield.

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    EFI Certified Tuner dejacky's Avatar
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    Quote Originally Posted by SealSupra-6 View Post
    you have to trim the brake dust shield.
    correct. I bent back parts that didn't need to be cut and just cut the necessary parts of the brake-shield off. It's probably best to cut the entire shield off, but since my cutter was very coarse, I wanted to minimize potential for slipping and slicing an important brake part off . Since I'm using mkiv Supra twin turbo wheels (17inch and high-disc fitment compatible), my calipers didn't need to be cut or modified in any way.

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    SupraForums Member zupar1187's Avatar
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    where can you get performance rotors for the ls400 calipers?

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    Addicted to Boost hksyota88's Avatar
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    will this work for a mk3 supra? this seems like a good upgrade... i like it
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    EFI Certified Tuner dejacky's Avatar
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    You use the same procedure for installing supra twin turbo brakes too. I know that supra tt 17in wheels fit the mkIII supras, so perhaps mkIII cars can accept this brake upgrade too. I just got good oem quality (made-in-usa) LS400 rotors from NAPA for ~$74 for the front pair.

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    Found E85 NOT in NJ! twinturbosupra94's Avatar
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    sweet job dejacky +1

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    Addicted to Boost hksyota88's Avatar
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    so thats all that needs to be done with TT brakes>?..... how big are the LS400 rotors?

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    EFI Certified Tuner dejacky's Avatar
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    Quote Originally Posted by hksyota88 View Post
    so thats all that needs to be done with TT brakes>?..... how big are the LS400 rotors?
    LS400 brakes are ever-so-slighty smaller than the Supra TT brakes. For all intensive purposes, they supra TT front brake calipers and rotors are practically the same size as the LS400 ones...if I remember correctly it's a rotor diameter difference of about 0.75 inches...

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    So is there an upgrade for the rear calipers too?

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    Addicted to Boost hksyota88's Avatar
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    good writeup ..i now need to make decisions

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    highly doubt it will work on a mk3 as it probably needs the nighpager adapters too

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    SupraForums Member javi1012's Avatar
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    i was wondering the same thing, what options are there for the rear brakes?

    if these are so cheap, could a group buy be made for a full kit calipers, rotors, pads, brake lines for the front brakes for us NA?

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    i have a set of front calipers from a ls400, 220 shipped for the set(calieprs, pads, pins, shims, etc)

    all you need to purchase are some rotors.

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    Newbie michaelvanle's Avatar
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    Quote Originally Posted by dejacky View Post
    I was never satisfied with any of the previous write ups that didn't show good pictures of what exactly needed to be done ;p . You will need at least ls400 wheels (16inch) or 17inch + wheels to clear these brake calipers.
    You don't really need a write up with pictures for this. It's very straight forward.

    Unbolt caliper, take out rotor, install rotor, bolt on new caliper, bleed.

  24. #23
    EFI Certified Tuner dejacky's Avatar
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    Thumbs down

    Quote Originally Posted by michaelvanle View Post
    You don't really need a write up with pictures for this. It's very straight forward.

    Unbolt caliper, take out rotor, install rotor, bolt on new caliper, bleed.
    And you really don't need to make more useless posts than you already do that contribute nothing to the thread topic.

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    wasting my life on SF muchoboosto's Avatar
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    maybe an uber stupid/nooooooob question. but, this is a viable upgrade to na mkivs correct? the 400 brakes are still superior to the supra brakes?

    thanks and sorry for the dumb assery


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  26. #25
    Newbie michaelvanle's Avatar
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    If you are talking about the TT brakes, I wouldn't say it's better, by any means, than the TT's. I think it might be lighter though.

    Quote Originally Posted by dejacky View Post
    And you really don't need to make more useless posts than you already do that contribute nothing to the thread topic.
    You get a free cookie from SF if you reach 10k post, so I was told.

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