GS - 1st Gen (1993-1997) Discussion about the first generation GS300

DIY ***Official LS400 Brake conversion with pictures***

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Old 04-02-13, 09:01 AM
  #16  
is300nat
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nice mod and write up man, what part of Tennessee are you in? Im in Knoxville and btw how are the threads on the tie rod and castle nut, can you take it off or did it mess the threads up to where it cant be removed?
Old 07-09-13, 08:55 AM
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MR_F1
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For anyone looking to do this swap, figs has a group buy going for 2 piece ls400 rotors right now. Good for a 4lb weight reduction per side.

Link

Last edited by MR_F1; 07-09-13 at 06:35 PM.
Old 07-16-13, 11:51 PM
  #18  
figthestig
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how about pad wear issues with doing this swap? since everything is fixed mounted is was told that there can be issues with uneven pad wear or the pads sticks or knock-back issues.
Old 07-17-13, 01:56 AM
  #19  
Nixspeed
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You should have less pad wear issues than with a sliding caliper. There is a reason all high end cars and race cars use this style. You get less pad drag resulting in free spinning disc as well as uniform pad clamping force.

I have a set of these, slightly used and already clearances to fit 1gs if anyone is looking. I just put it back to stock so the stock wheels would fit to sell the car.
Old 02-27-15, 07:19 PM
  #20  
TRACKMKIII
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I know I am bringing this thread back from the dead but has any had a soft/low/spongy pedal after do the LS400 or TT front brake conversion? I just finished my LS400 front conversion a few days ago and I have a low soft brake pedal. I have bleed the system several different ways and the brake pedal is still soft and low. The first 50% of brake pedal travel does very little and then the brakes grab. Sometimes if I double pump the pedal it seems like I have full pressure but on the next stop the pedal feels soft again. Which leads me to believe there is air still in the system but I have bleed the system several times. I am using SS brake lines so that shouldn't be an issue. The pads I am using came with the calipers when I bought them and they are in good shape but just to eliminate that as a possible problem I ordered EBC Green Stuff pads. I have read in a few places that upgrading to the TT or LS400 master cylinder is a possibility but I have not seen any definitive information....does anyone know any info about this? Upgrading to MC from a car with 4 piston calipers makes sense. Well any help or information will be greatly appreciated!! BTW the calipers are rebuilt and the bleeder screws are facing the correct direction.
Attached Thumbnails DIY ***Official LS400 Brake conversion with pictures***-forumrunner_20150227_221706.png  
Old 03-01-15, 07:09 AM
  #21  
kene
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maybe try bleeding the system with a vaccum bleeder. That may be able to pull every last air bubble out completely.

Old 03-01-15, 02:51 PM
  #22  
TRACKMKIII
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Thanks for the suggestion. I installed the new pads today and bled then again with the vacuum bleeder. The pedal improved some but the brakes still aren't inspiring confidence. Occasionally if I double pump the pedal the brakes feel great and stop the car much better than the factory brakes. I may look into a new master cylinder and maybe try to find more info about the TT/LS400 Master Cylinder upgrade. If anyone has any info about the upgrade please chime in!!
Old 03-01-15, 06:42 PM
  #23  
twojayzee
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Did you try the old school two person bleed going corner to corner?
I had to do that multiple times, but it was rock solid when complete.
Old 03-01-15, 06:50 PM
  #24  
TRACKMKIII
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Yup I did that again after I installed the new pads today. Steady stream with no bubbles. My "TRAC" Accumulator and pump don't work so my "TRAC" is on most of the time.....is it possible that air could be trapped in there?
Old 06-29-15, 06:50 PM
  #25  
21ls400
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Default ls400

Will this set up work on my 94 lexus ls400
Old 07-22-17, 01:00 PM
  #26  
Deathbarel
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pictures are not working. is there any way to fix this. if i install rca spacers the car will be too low.
Old 04-24-20, 10:40 PM
  #27  
Amel2jzgte
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Definitely in my plans for my 2 gen Aristo!! Good job 👍👍
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