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Tuesday, August 21, 2018

R32 GT-R Brake Master Cylinders

BM57 brake master cylinder. 1 1/16th inch bore. Rear line which goes to front calipers is split with block.


Brake master cylinders are probably the most sexy part of your entire braking system. Really. Honestly. Probably not. 

When you press on the brake pedal, which is a type of lever, the other end actuates a rod that moves the piston in the master cylinder.  The R32 GT-R came with both BM44 (15/16th piston) and BM50 (1 inch piston), not sure exactly how those broke out.  However translating from Japanese, it seems like the three port BM44 was used on the Nismo, and possibly the N1, along with the GTS-t R32.  All the other R32 probably got the BM50 master cylinder at 1 inch.

The larger the diameter of the piston, the more fluid it moves. When you swap out to larger calipers, you want a larger piston in the master to be able to move more fluid down at each caliper.

Something we just were looking at, is the 2 and 3 port versions of the master cylinders. The BM44 it seems is a 3 port used with non-ABS cars, and the BM50 being a 2 port used with ABS.

Brake Master Cylinder
  • OEM Sumitomo R32 GT-R and GTS-t (Nismo and N1 maybe?)
    • BM44
    • Nabco 
    • 3 port? (No ABS?)
    • 15/16" piston  (23.8125 mm)
    • 46010-02U20
  • BM50 - Also OEM R32 GT-R and R32 GTS-t 4WD
    • 1" piston (25.4 mm)
    • Nabco
    • 2 port (With ABS)
    • 46010-05U20
  • OEM Brembo R32 GT-R Vspec/R33 

ABS removed. Rear port, which controls the front calipers is tee'd off. This is a BM57 master cylinder


  • R32 GTR (Non V-Spec)

    Master Cylinder diam (mm)25.4 area 506.71mm²
    Front Caliper Piston(diam x qty)40.4×4 = 5127.58mm²
    Front rotors (diam x thk)296×32
    Rear Caliper Piston(diam x qty)38.18×2 = 2289.78mm²
    Rear Rotors (diam x thk)297×18
  • R32 GTR V-Spec / R33 / 34 GTR with Brembos

    Master Cylinder diam (mm)26.9 568.32mm²
    Front Caliper Piston(diam x qty)(44+3Cool×2 ... leading pistons smaller then trailing 5309.29mm²
    Front rotors (diam x thk)324×30
    Rear Caliper Piston(diam x qty)40×2 2513.27mm² ratio FR = 2.1125
    Rear Rotors (diam x thk)300×22
    Brake to master ratio13.76

Wednesday, August 15, 2018

R33 Nissan Skyline : Fluid Capacity : Oil Pressure

USA legal 25 year old R33 GTS-t
25 year old, and USA legal R33 GTS-t

Engine Lubrication and Cooling Fluid Capacities for R33 Nissan Skyline

Engine Oil Capacity (quarts)
Item RB20E/RB25DE RB25DET RB26DETT
H Level 4.2 4.3 4.8
L Level 3.2 3.5 3.7
Oil and Filter Change ~ 4.4 ~4.8 ~4.9

Coolant Capactiy (liters)
RB20/RB25DE/RB25DET RB26DETT
Capacity ~9 ~9.2

Engine Oil Pressure(kg/cm2, psi)
RPM Idling 2000 6000
RB20E ~1.0, 14 ~3.8,54 ~4.8,68
RB25DE ~1.0, 14 ~3.3,47 ~5.3,75
RB25DET ~1.0, 14 ~3.5,50 ~5.6,85
RB26DETT ~1.5, 21 ~3.0,43 ~4.6,65

RB26dett with extended oil pan from Trust/Greddy

RB20DE in an R32 GTS

Monday, August 13, 2018

Brakes : Nissan Skyline



Since the Nissan Skyline was never offered in the US, some maintenance parts can be hard to find. Since brake parts are wear items, they have to be replaced periodically.



The Skyline GT-R calipers are similar to the 300ZX, and use the same pads.  The front rotors however are larger 296 mm on the GT-R vs 280 mm on the Z32tt.


HR32 - 4 lug Nissan Skyline

On the rear brake side of the HR32, it appears nothing crosses over to any US chassis.

Rear brake pads, calipers, and rotor part numbers

AY060-NS008 - Pad kit, disc brake - Rear R32 HR32. 4 lug

44011-44F00 - Caliper Assembly, rear left hand - HR32

44001-44F00 - Caliper Assembly, rear right hand - HR32
Rear rotors
43206-15U01  (alternate - 43206-44F02)

R32 GTS4 HNR32 Brakes -

Early R32 GTS4 brake rotor  40206-69F00. Same as 300ZX

Tuesday, July 31, 2018

August 2018: The R33 Nissan Skyline GTS and GTS-t turns 25 years old

1993-1998 Nissan Skyline GTS and GTS-T Buyers Guide



The earliest versions of the R33 Nissan Skyline GTS and GTS-t start turning 25 years old in August of 2018. Over 25 years old means they are exempt from US DOT, or Federal Motor Vehicle Safety (FMVSS) standards.  At 21 years old a vehicle is EPA exempt in original configuration.  The R32 Skyline GTS stopped being produced in 1993, but the GT-R version went though the end of 1994.  The R33 GT-R version first being sold in January 1995, it will be legal starting in January 2020. 

There were 16 different configurations of the R33 Skyline in 1993(25 in 1995).  This includes differences like engine, rear wheel drive vs all wheel drive, two door vs four door, and manual and automatic transmission. There are also turbo, and non-turbo versions. Horsepower ranged from 128 to 246.  The most desirable cars generally being 2 door, 5 speed, RB25 turbo, and rear wheel drive. Thanks to GT-R Registry for the information

We have several R33 GTS arriving this week, and many more over the next few months. Future Inventory



Configuations/Chassis codes of the R33 Skyline

  • HR33 
    • GTS
    • GTS Type G
    • GTS Urban Runner S
    • GTS Type S
    • GTS Type X
    • GTS Type X Limited
    • GTS Type X 40th Anniversary
  • ER33 
    • GTS25
    • GTS25 Type G
    • GTS25 Urban Runner S
    • GTS25 Type S/S
    • GTS25 Type X
    • GTS25 Type X Limited
    • GTS25 Type XG
    • GTS25t Type G
    • GTS25t Type S
  • ENR33 GTS-4
    • GTS-4
    • GTS-4 Type G
    • GTS-4 Type X
    • GTS-4 40th Anniversary
  • ECR33 GTS-25
    • GTS25t Type M
    • GTS25t Type M Active LSD
    • GTS25t Type M1 4 Door
    • GTS25t Type M2 2 Door
    • GTS25t Type M2 4 Door
    • GTS25t Type M 40th Anniv
    • GTS25 Type S



The HR33 GTS could be a 2 door coupe, or a 4 door sedan. It could have a 5 speed manual, or an automatic transmission. The engine was RB20E with 128 horsepower.  This is your entry level R33. With a single over head cam 2 liter engine, it was not a motivated mover. Add an automatic, and four doors, and we would call it downright slow.
Available Colors HR33
Paint Code Production
1N3 1761
1N4 11694
AN0 1962
AR1 449
BN6 1392
DN0 332
KH2 8849
KH3 5274
KL0 1336
KN6 4645
KR4 10179
QM1 10894
WK1 4959
First Production HR33 - 000101 GTS August 1993
Last HR33-109971 - GTS Type X 40th Anniversary April 1998



The ER33 was available with a normally aspirated or turbo version of the RB25DE. The cars could also be two or 4 door, and 5 speed manual, or 5 speed automatic.  The RB25DE was rated at 187 horsepower, where the RB25DET was rated at about 246 horsepower.  Turbos are more gooder.  28446 ER33s were produced from August 1993 to April 1998.
Available Colors ER33
Paint Code Production
1N3 1151
1N4 6753
AN0 659
AR1 179
BN6 674
DN0 173
KH2 5294
KH3 2377
KL0 176
KN6 2006
KR4 3481
QM1 3074
WK1 2383
First production ER33-000121 GTS25 Type G August 1993
Last ER33-072473 GTS25 Type S April 1998


ENR33 as the start of the chassis number, signified that it was an all wheel drive car.  They were available as 2 or 4 door, 5 speed manual, or 4 speed automatic. The RB25DE was rated at 187 horsepower.  7500 ENR33 or GTS4 R33 were made November 1993 to April 1998
Available Colors ENR33
Paint Code Production
1N3 217
1N4 1055
AN0 350
AR1 81
BN6 192
DN0 24
KH2 946
KH3 1043
KL0 172
KN6 608
KR4 998
QM1 1070
WK1 720
First production ENR33-000067 GTS4 November 1993
Last ENR33-220984 GTS4  April 1998




The ECR33 came with either a naturally aspirated, or turbo version of the RB25DE, rear wheel drive, Hicas, and either a manual or automatic transmission. The turbo version could be 2 door or 4 door. The NA version was just available as a 2 door.  A total of 64308 ECR33's were made from August 1993 to April 1998.
Available Colors ECR33
Paint Code Production
1N3 2356
1N4 3743
AN0 7393
AR1 611
BN6 638
DN0 117
KH2 6629
KH3 11726
KL0 3656
KN6 1499
KR4 6556
LP2 178
QM1 18570
WK1 584
First production ECR33-000151 GTS25t Type M August 1993
Last ECR33-135381 GTS25t Type M 40th Anniversary April 1998

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