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Revision as of 09:54, 14 November 2023

Hitachi R145 was used in 4WD applications as the rear final drive. Many applications used a 4-bolt rear cradle which contained the entire suspension except for the struts.

1 Overview
2 Sources
3 Gearset
4 LSD
5 Coupling
- 5.1 Electric Coupling
- 5.2 Hydraulic Coupling
6 Gasket
7 Case
8 Weight
9 Rear Suspension

Overview

Coupling Type - Hydraulic (alloy case)
Coupling Type - Electric (alloy case)
Short Pinion type (cast iron)
Long Pinion type (cast iron)

Post 399034

Standard type [short pinion]
N14, N15 Pulsar
B13, B15 Sunny
N30, JU30
M12, G10, 
RB14, W11 P12, VW11, W11

Short Pinion type (38300-5V200 NN30 R'nessa SR20 Rear diff shown)
Album 28884
2 rear mounting studs + 2 front mounting ears

Long pinion type (N14 Pulsar including RNN14 GTI-R)
Album 24208
2 rear mounting studs + 4 front mounting bolt bosses

Hydraulic clutch Coupling Type
C24 Serena 
M12 Prairie Liberty
K11 March
P12 Primera
VW11V Expert エキスパート
U30 0108-

Electric Coupling Type
T30 X-Trail
Murano USA Z50 electric coupling

Electric Coupled
Post 399034 Post 399034

Hydraulic clutch Coupling
Album 24212

Sources

R145 was mostly used with 4-cylinder engines

 Z50 2002-2007 Muranoᵂ USA
 N14 1990-1995 Pulsar
 N15 1995-2000 Pulsar#N15
 B14 1995-1999 Sunny
 B15 1999–2004 Sunnyᵂ
RB14 1995-2000 Rasheenᵂ
 C24 1999-2000 Serena JPN (IRS post-vanette)
     2001-2012 Asia markets
     2007-2023 China
 K11 9911-0010 Micra/Marchᵂ CG10DE+CGA3DE
 M12 9811-0105 Prairie Libertyᵂ
 N30 1997-2001 Nissan R'nessaᵂ
 P12 2001-2008 Primeraᵂ
 T30 2001-2007 X-Trailᵂ
JU30 2000-2003 Bassaraᵂ
 U30 1998-2003 Presageᵂ
VW11 1999-2006 Expertᵂ エキスパート
 W11 1999-2005 Avenirᵂ
 Y11 2002-2005 Nissan Wingroadᵂ/AD Wagon VHNY11, VFY11

J10 2006-2012 Nissan Qashqaiᵂ/Dualis 
Nissan Rogueᵂ
Renault Kangooᵂ
 HY 2007-2017 Renault Samsung Koleos/QM5ᵂ

Gearset

2.466 split case with coupling
2.466 split case with coupling
3.357
3.692
3.700

38100-CA000ᴳ GEAR SET-FINAL DRIVE 37/15=2.466 [split case] $617 USD
             T31 J11 U31 Z50 Z51
38100-CA00Eᴳ GEAR SET-FINAL DRIVE             [split case] $1384 USD (2023)
             Z50 Z51 U31 J10 T31 Altima.2019-2024 Murano.2011-2024 Rogue.2010-2011,2015-2020
             Rogue Sport.2017-2022
             * superceeds 38100-CA000
38100-4N500ᴳ GEAR SET-FINAL DRIVE 37/15=2.466 [split case]
             C24,K11,M12,P12,T30,VW11,W11,JU30,U30.2002- Y11
38100-4N50Eᴳ GEAR SET-FINAL DRIVE 37/15=2.466 [split case]
             T31   2011-2016 Serena C26.MR20DD

38100-10E60ᴳ GEAR SET-FINAL DRIVE 47/14=3.357 [short pinion]
             M12, N30, W11, U13

38100-11E65ᴳ 48/13=3.692 [long pinion]
             JU30 9911-0108 KA24DE+YD25DDT, B15, G10, U30.2000-2001 split case

R180
38100-03G10ᴳ GEAR SET-FINAL DRIVE 37/10=3.700 [long pinion]
             B13, B14, N14, N15, RB14 Rasheen

LSD

Can R145 use the R180 LSD?

Both Nissan and Cusco sell rear R180 LSD

38760
38411-20R21ᴳ COUPLING ASSY-VISCOUS $584 USD
* Superseded 38411-20R14
* N14 Pulsar/Sunny JDM.SR20DET (RNN14) 1991-1994 [R180]
* M11 USA Axxess 0189-0394 4WD.KA24E.SGL.FA (R180)
* U12 Bluebird 1988-1991
* P10 Primera 1991-1995

Cusco for R180
MZ TYPE-RS No. LSD684ᴳ 1.5 way Subaru BP/BL (2003-2009 Legacy/Liberty)
MZ 1-way

Coupling

The coupling takes the place of a center differential. These models have a totally different case, which is split on the axle centers.

Electric Coupling

The electric coupling is designed to work at any setting from non-powered to fully-powered, for various torque splits. The electric coupling, when not powered, allows the rear diff to free-wheel (putting the vehicle into FWD mode). When fully powered, the propeller shaft rotation connects to the diff as normal.

For this reason, operating as a RWD-only diff is complicated. You could use a relay and fully power it, but the failure mode would be to stop transmitting power.

Z50 USA Murano (CVT)
T30 JDM X-Trail GT

Hydraulic Coupling

Appears to be a continuous (non-disconnectable) driver unit?

38760M  assembly
38760KS assembly kit with bearings

38760-4N210ᴳ COUPLING ASSY-HYDRAULIC
* K11 March

38760-4N215ᴳ COUPLING ASSY-HYDRAULIC
* C24 Serena 
* M12 Prairie Liberty
* P12.QR20DE.AT 0101-
* VW11V Expert エキスパート

38760-4N815ᴳ COUPLING KIT-HYDRAULIC
* KIT with 38760-4N215 and two bearings
* U30 0108-
* JDM.U30,C24,M12,JU30,P12,VW11,W11
* P12.QR20DE.AT 0101-

Gasket

38320-01G02 or Liquid Gasket

Main: Diff Gasket#IRS

Album 28879 Album 28883

Case

38310 CASE (CARRIER COMPL-GEAR)

COUPLED TYPES
38310-8H500 [electric coupling]
            T30
38310-4N500 [hydraulic coupling]
            C24, M12, JU30.QR25DE, P12, U30, VW11, W11

SHORT-NOSE
38311-20E00 
   * N30 Rnessa
   * JU30 9911-0108 KA24DE+YD25DDT
38310-4N500 
   * JU30.early

LONG-NOSE
38311-71Y00/38311-71Y02
   * B13, B15, M12, G10, N14, N15, RB14, W11

R180 38311-S6200
   * USA.M11 non-LSD
R200 38311-S7000
   * USA.910+M10+M11.LSD+S130

Weight

Longnose R160 < 56 lbs
Longnose R180 ~ 66 lbs
Longnose R200 76 lbs
Shortnose R200 72 lbs

Rear Suspension

431 REAR SUSPENSION

STRUT TYPE
B13,B15 drum brake
N14,N15 DB *DISC OPTION SR20DE

N30 Short-nose
JU30 9911-0108 Short-nose
JU30 0108- Hydraulic Type
U30 0108- R145A hydraulic type
* Double A-arm suspension on cradle
* transverse leaf
* drum brake

P12, strut type, flat 4-bolt?
* disc brake

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R145