LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

Big brakes?

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Old 11-01-08, 07:16 AM
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python
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Default Big brakes?

has anyone bought the big brake kit (SUPRA TT) upgrade for a 92 Ls from lextreme? i need to know how they perform compared to stock brakes...thank you
Old 11-01-08, 08:17 AM
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LiCelsior
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just ask any SC/GS guy...way better than stock! also there was a guy selling his LS with the TT brakes.
Old 11-01-08, 11:47 AM
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Christian
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Hello,

just to be sure. Is it right that the Supra tt setup is a direct bolt on? Because for the LS Calipers from 95-00 model it is not!

Chris
Old 11-01-08, 12:40 PM
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actually 95-00 calipers will bolt right on, the problem with them comes from the fact that because they are 2piece ALUMINUM calipers (and the TT calipers are Steel) they are extremely wide and foul on the lower balljoint stud. this can be corrected by either shaving the bolt down (not recco'd) or getting a Roll Center Adjuster. the GS guys have been using the latter method for quite some time, however they arent widely available for the LS yet.

The TT calipers will bolt right on without modifications, but they are MUCH more expensive as well as being Heavier than the 2LS setup.
Old 11-01-08, 01:09 PM
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python
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so they will work for a 1 gen correct?
Old 11-01-08, 01:34 PM
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yep, you need calipers, pads, shims, rotors, mounting bolts, lines, and you'll either have to trim the dust shield or just take it off.

oh, and you'll need some new wheels since the factory 89-94 wheels won't clear EITHER brake setup.
Old 11-01-08, 02:19 PM
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python
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im assuming these will work
Attached Thumbnails Big brakes?-000_0148.jpg  
Old 11-01-08, 05:39 PM
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j three
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How much clearance do you have between the stock caliper and the back of your wheel spokes. That would give the pros more info to help out. Also measure in metric "millimeters". Hope that helps a little bit.
Old 11-01-08, 06:58 PM
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Don't recall all the numbers now...the TT Supra rotor was like 12.7", the 95-00 LS was 12.4". The rotor on the 1-LS is like 10.X. Do the conversions stick with the stock sized rotor or go bigger?
Old 11-01-08, 07:17 PM
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Whatever calipers you get, you'll be using the corresponding rotors. So if you're upgradeing to the supra calipers, you'll need supra rotors.
Old 11-01-08, 09:01 PM
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python
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i am sure i have 2 inches to spare
Old 11-01-08, 09:08 PM
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then you should be alright

for future reference, you need what are called "high disk" wheels to clear big brake calipers.
Old 11-02-08, 07:36 AM
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hmmm, not really sure what high disc wheels are PD, i would hate to spend that kind of money and find out they wont fit
Old 11-02-08, 09:57 AM
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Rough clearance, you'll need about 3/4" from caliper to spoke in the new caliper position. You can check with the wheel manufacturer to see if these are spec'd for the 2-LS. If so, no worries.
Old 11-02-08, 11:31 AM
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ehh, i don't really like to do it this way but if they ALMOST clear you can throw a 5mil-10mil spacer (with extended lugs) to make it work....
assuming your wheels are already conservative offset.


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