Monday, October 8, 2012

LS400/UCF20 or LS430/UCF30 or Sumitomo Front Brake Upgrade to Z27AG Rcolt




<- pads on the left top and bottom are the 4pot ones


Requirements:
- Custom dog bones from FullBlast or DiY
- GTO Rotors
- Pads
- Brakelines?
- 16" rim min (UCF20)


Note sure min rim size for a UCF30, but i believe the 16" is fine



-------------------------------- Lexus Info

http://www.lexls.com/info/lsgenerations.html

First Generation - LS400 = UCF10/11
Series I: 1990 - 1992
Series II: 1993 - 1994

Second Generation - LS400 = UCF20/21
Series III: 1995 - 1997
Series IV: 1998 - 2000

Third Generation - LS430 = UCF30/31
Series I: 2001 - 2003
Series II: 2004 - 2006

Fourth Generation - LS460/LS460L = UCF40/41
Series I: 2007 - Unknown

-------------------------------- FullBlast Kit

http://www.bfm-fullblast.ecnet.jp/products/colt/brakikit.html

Φ315 × ○ rotor for Mitsubishi GTO two
mono-block caliper for ○ × Toyota UCF30 two
piece caliper bracket × 2 ○
○ class two short parts, brake pads ×
accepted by ○ wheel mounted at 16 inches

- Celsior/LS400 UCF20 4-pot alloy calipers
- LS430 brakes are the big monoblock alloy calipers used in the Night Pager UCF30 Celsior Caliper Kit

-------------------------------- GTO Disc Information

PRODUCT MODEL (Mitsubishi GTO/3000GT Z15A, Z16A With 313mm Discs )
- Mitsubishi GTO/3000GT With 313mm Brake Discs Fitted

Size
Diameter - 313mm
Height - 45mm
Brake Disc Type - Vented
Thickness - 30mm
Minimal Thickness - 28.4mm
Number Of Holes - 5

Manufacturers Part Numbers for REF ONLY
BRAKEKIT032
Discs = MR235802 MB235803 MB928897
Pads = MR389516

BFM Fullblast RColt - Minkara UCF30 Kit - Z27AG 
YR Advance RColt - Minkara Blog

-------------------------------- 

Subcategory : Mitsubishi
Application : 3000GT GTO 3.0 V6 Twin Turbo Z16A 313mm Disc 8/92>99
Product Code : KBD660G
Quick Code : D4567
Details : Vented discs. A = 313, B = 30, C = 28.4, D = 45, E = 69, F = 5.

-------------------------------- DBA Disc Comparison

Part No - Ventilation - Diameter - Height - Thick - Min Thick - CB - Studs - Shipping Weight kg
DBA 4402 - Vented      - 276        - 45       - 24    - 22.4      - 69 - 4     - 6     * Evo III
DBA 4213 - Vented      - 296        - 45.2    - 30    - 28.4      - 69 - 5     - 7     * Evo IV RS CN9A
DBA 4216 - Vented      - 314        - 45.5    - 30    - 28.4      - 69 - 5     - 8.6  * GTO -
DBA 4425 - Vented      - 276        - 45       - 24    - 22.4      - 69 - 5     - 6

I am currently using the DBA 4402 - z27ag-evo-twin-pot-pads-n-rotors-p2.html
More info here - project-mu-or-carbotech-276mm-or-294mm.html

-------------------------------- 4Pot Sumitomo from a Nissan

I have just realised using the 314mm rotor for the GTO you can combo it with the S15 Sumitomo 4pot brakes. I believe they are stock on a 280mm rotor. Minimum i would run is the 296mm
These similar 4pots are found on R32 and alike http://www.sxoc.com/
It looks like there are a few types. Some are aluminium and some are iron.
A few japanese guys run this combo, see here - http://minkara.carview.co.jp/
I have yet to figure out what dog bones they run. Because he runs spacers he also uses KYO-EI Long Hub Bolt SMB2. I believe i will use H&R hubcentric spacers, as i trust these.  I will see what i need at a later date to clear a possible future brake upgrade.

R32 GTR runs the 296mm rotor. A perfect match.
V-Spec runs a much bigger rotor, I believe with Brembos.
Z32 brakes are common upgrade items due to the lightweight aluminium.

I bought hub centric rings OD=73mm / ID=67.1mm. I believe our CB is 67.1mm.
I should really confirm this (well the Volvo S40 is 67.1mm). But i run a rotor of 69mm. Could be the reason its not entirely a super snug fit :)

-------------------------------- H&R Hubcentric Trak+ Spacers  - CB = 67.1mm 
This CB seems to be shared between Mitsubishi, Volvo and Hyundai according to H&R.

10646715        Volvo S40
wheel number of holes 4, wheel spacer DRS-System 10 mm 114, 3/4, 67, 1 mm note 18, offset: +15 | Notes:  18

30646715        Volvo S40
wheel number of holes 4, wheel spacer DRS-System 30 mm 114, 3/4, 67, 1 mm, offset: +15

40646715        Volvo S40
wheel number of holes 4, wheel spacer DRS-System 40 mm 114, 3/4, 67, 1 mm, offset: +15

5064671         Volvo S40
wheel number of holes 4, wheel spacer DRM-System 50 mm 114, 3/4, 67, 1 mm, offset: +15

http://www.h-r.com/includes/download.php?file=../bin/42TG0651.pdf

-------------------------------- Disc Size based on GTO/3000GT Year Model
Please reference DBA P# above.

3000 GT
JF 10/1992-5/1994
 - 213 - 4213
3000 GT 5/1994-on
 - 216 - 4216

3000 GT, GT-SL, GT-VR4
GT & GT-SL 4/1990-1995
 - 425 - 4425
GT-VR4 1990-5/1993
 - 213 - 4213
GT-VR4 6/1993-1999
 - 216 - 4216
                                                           Image: Compare LS400 discs

-------------------------------- Lexus Rotors?

DBA Part Numbers for LS400/UCF (NOTE: Couldn't find any reference for these @_@)
Standard Vented Rotors (Front) - DBA745 (Special Order)
Slotted Vented Rotors (Front) - DBA745SL (Left Hand) & DBA745SR (Right Hand)

RDA
Lexus LS400 2.0L 94-2000 Front Disc Brake Rotors RDA7517- 7517SL/SR





















Rotor Type: Vented
Diameter: 314mm x 28mm
No of Bolt Holes: 5








Celsior UCF20/21 Brakes fit JZX90/100
Front brakes:
UCF10/11 rotor : 276 x 28
UCF20/21 rotor : 315 x 28 - JZX Install






-------------------------------- Lexus UCF30 better than the UCF20?
UCF30/31 are lighter, monoblock all aluminum vs the jza80 calipers where only the outer half is aluminum.. but the UCF caliper mounting holes are atop the caliper whereas the jza80 caliper attaches the conventional way
UCF20/21 Calipers are basically the same as JZA80 4 Pots. Slightly narrower and a bit heavier, but also a lot cheaper.
I know to fit them to a JZX90/100 you not only need the special offset nuts for the mounting holes, but also Roll Centre Adjusters.
JZA80 1996–2002 Twin Turbo Supra Front & Rear Brakes - Planet Soarer Information

Some info from the Supra guys:

I installed the front brake of LEXUS LS430(Japan name "CELSIOR").

This caliper has light excellent strength for the mono-block 4 pots structure of aluminum.
Brake rotor is JZA80 324mm.

A rear brake was replaced with another thing at the same time, too.

The rear caliper of NISSAN SKYLINE GT-R (BNR32) was installed.
This caliper is excellent because it is a confrontation-type 2 pots though it is small.
Brake rotor is JZA80 in the same way.


This brake installation kit is on market to Japan.
The cost which I spent on this brake was about 250000 yen in total.
Of course it is the brake of front and rear. It was very powerful and moreover these brakes were excellent iin a balance of front and rear.

My JZA70 is equipped with ABS. Therefore installation was difficult, and needed time. Installation could be done beautifully. ABS works no problem too.

An installation photograph is at my Web site. As for the details, see this.

----
Takeshi Onishi
'91 TT 1JZ-GTE Japan
http://www.master-t.jp/


-------------------------------- Mounting Information
TBC



2 comments:

  1. ... Would these lexus ls430 Calipers work under 16" wheels, with around a 295/300 or so discs/rotors?.

    ReplyDelete
  2. ... Can someone point out the models,of each of the 3 Calipers shown, together above pic (middle one being a lexus l430) ??.

    ReplyDelete