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[Datsun 1200 encyclopedia]

H165

From Datsun 1200 Club

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Category: Differential

Hitachi H165 differentials uses a 165mm (6.5") ring gear. One was fitted to Datsun 1200 Sunny Trucks (B120). Early (H165 pre-1973), H165B Type I (1973-1979) and H165B Type II (from July 1979). The gear sets do not interchange between the various Types.

Contents

Identification

H165 has 8-stud removable center. H150 and H190 are also 8-bolt. H145 is 8-stud.

New Type uses M11 bolts, all others use M10 bolts.

H165 Chassis ID code is HC

Size

Measure the gear. This H150 unit measures 150mm
25277.jpg

H145 measures 145mm
H165 measures 165mm

Pre-1980

B10: H145, 3.900 
 VB10: 4.375 (van/wagon)
 B20: 4.375 S.T.D. / 4.625 Optional (ute/pick-up)
B110: H145 3.900
VB110: H145 4.111 (van/wagon)
PB110: H165 4.111
B120: H165 4.111 (ute/truck)
B210 1974: H145 3.900
B210 1975-up: H150 3.700 or 3.889
PB210/GB210: H165
B310: H150 various
A10: H165 various

1980-up

Axle Codes
H = Hitachi removable gear carrier (pumpkin/centre section)
HA - H145 (145mm diameter ring gear, 5.709 inch)
HA38 H150 3.889 ratio
HB - H150 (150mm diameter ring gear, 5.906 inch)
HC - H165 (165mm diameter ring gear, 6.496 inch)
HD - H190 (190mm diameter ring gear, 7.480 inch) ALUMINUM CARRIER
HE - H190 CAST IRON CARRIER
HF - H190A revised for strength

Axle code is on Chassis Identification plate 1980-on
21048.jpg

Starting in mid-80s, Axle Code is on door-jamb sticker.

Factory LSD has a sticker on the back of the diff housing.

Counting

To verify the ratio in the vehicle matches the original equipment (or build tag), you may count turns of the wheel vs turns of the driveshaft. If slightly less than 4 turns of the driveshaft results in one turn of the wheels, it is a 3.9 ratio. If it takes a bit more than 4 turns, it is a 4.111 ratio.

Even better is to note the stamped numbers on the ring gear. For example, this unit is stamped 39:11
24439.jpg
39 divided by 11 = 3.545 ratio
25276.jpg

Pinion gear is similarly stamped
25278.jpg

Overview

Datsun Competition (later Nismo) used to sell various ratios:

  • H165B Type I (to 6/79): 3.545, 3.7, 3.9, 4.111, 4.375, 4.625, 4.875
  • H165B Type II (from 7/79): 3.364, 3.545, 3.7, 3.9, 4.111, 4.375, 4.625, 4.875

Available from production vehicles: 3.7, 3.9, 4.111 & 4.875 reference: diff ratios

1240.jpgC120 van ratios

You can get 4.1:1 and 4.875:1 ratios quite easy, it is the same diff that Bluebirds (rwd Maxima) and C20 (Datsun Vanette) -- some with aluminum centers -- and some 4wd Datsun Pickup (non-1200 ute) front diffs (those are wider assemblies, though, so just use the center section). For example: A10 Stanza/HL510 (1978-1982): 3.7:1 180B (610) wagon: 3.89:1 Series 1 Bluebirds (810): 3.89:1 Series 3 Bluebird wagon (910): 3.89:1

Pit Road carries the H165 part (LSD Nismo P/N 38420-RS110). [DatRats] also has been known to carry the 1200 ute stuff.

Ratios

H165 is available in:

3.364 
3.545
3.700
3.900
4.111
4.375
4.625
4.875

Types

H165 uses different gearsets depending on which version is it:

Type I Namiha (old type) - last used 1979
* includes both H165 and H165B (low tooth) types
* For Gear Carrier 38310-N5000
* N5 gearset numbers
Type II Takaha (high-tooth) - used 1979-1986
* high-tooth H165B
* For Gear Carrier 38310-W8500
* W gearset numbers
New Type - first used in 1986
* M11 bolts for ring gear (others use M10 bolts)
* Same Gear Carrier as Type II
* G3 gearset numbers
Type I
38100-N5000 3.700
38100-N5100 3.889
38100-N5200 4.111
38100-N5300 4.375
38100-N5400 4.625
38100-N5505 4.875
Type II
38100-W8500 3.154
38100-W8600 3.364
38100-W8700 3.545
38100-W8800 3.700
38100-W8900 3.889
38100-W9000 4.111
38100-W9100 4.375
38100-W9200 4.625
38100-W9300 4.875
New Type (M11 holes)
38100-G3100 3.700
38100-G3200 3.889
38100-G3300 4.111
38100-G3400 4.375
38100-G3500 4.625
38100-G3600 4.875
Bolt-drive Gear
38102-11S00 M11 $2.57 USD
38102-W8500 M10 $2.57 USD

Strength

H150 vs H165

24438.jpg

1672.jpg

25279.jpg

25280.jpg

Datsun 1200 Factory H165

B120

Datsun B120 (1200 Sunny Truck) gear sets - H165 (HC41)
H165 
* 38100-28500 4.111 HYPOID GEAR & PINION SET (37/9) (to '72-12)
H165B Type I carrier
* 38100-N5200 4.111 HYPOID GEAR & PINION SET (37/9) (from '73-1 to 7906)
H165B Type II carriers
* 38100-W9000 4.111 GEAR SET-FINAL DRIVE 7907-8605
* 38100-G3300 4.111 GEAR SET-FINAL DRIVE 8605-
22817.jpg
Datsun B120 (1200 Sunny Truck) gear sets - H165 (HC41)
Type I carriers
* 38100-28500 4.111 HYPOID GEAR & PINION SET (37/9) (to '72-12)
* 38100-N5200 4.111 HYPOID GEAR & PINION SET (37/9) (from '73-1 to 7906)
 Type II carriers
* 38100-W9000 4.111 GEAR SET-FINAL DRIVE 7907-8605
* 38100-G3300 4.111 GEAR SET-FINAL DRIVE 8605-

PB110

PB110 axle housings are basically the same as the 1200 Truck, but have the correct minor differences for either Sedan or Coupe.

38100-29000 HYPOID GEAR & PINION SET (35/9=3.889)
38310-A6100 GEAR CARRIER COMP
38423-28500 GEAR-side, diff bevel
Sedan
 43010-H2800 CASE COMP.-rear axle (up to '72-11)
 43010-H2851 CASE COMP.-rear axle (from '72-11) > 43010-H2800
Coupe
 43010-H2500 CASE COMP.-rear axle (up to '72-11)
 43010-H2551 CASE COMP.-rear axle (from '72-11) > 43010-H2500
 * Also sold by Nissan Competition. See H165 Conversion Listing

Gasket

Center section gasket for H165 carrier.

  • 38320-N5000AS Gasket-carrier $4.27 USD
    • supersedes 38320-04110 GASKET-GEAR CARRIER H165

23236.jpg

38320 GASKET-GEAR CARRIER
H145 38320-18010 GASKET-GEAR CARRIER $1.70 USD
H150 38320-H5001 Gasket-carrier $4.43 USD
H165 38320-04110 GASKET-GEAR CARRIER H165 
H190 38320-B3002 Gasket-cover $4.13 USD 

23236.jpg th_H190_differential_cover_gasket.jpg th_M78_differential_cover_gasket.jpg

NOTE: 8-hole gaskets: 
H165, H150 are 8-bolt. H145 is 8-stud.
H190 is 10-bolt

For more details, see main article: Diff Gasket

Alloy Carrier

The real advantage of an alloy diff is in the reduced unsprung mass, which is particularly important in a light car like a 1200.

Rare alloy H165 carrier - from 1967 Datsun 510 Bluebird (Series 1) Australia
8845.jpg

Australia report: P410 & P411 Datsun Bluebirds & possibly even P310. These are pre 1600 models sold in the 1963 - '65 period. & are H165 diffs

Empty shell: Alloy 5.5 lb, Iron: 14.5 lb
9007.jpg th_Leftside.jpg

USA Datsun Roadster - 1500 SP310, 3.88 ratio, 23 spline side gears

Nismo

Also see: LSD#H165

Nissan Competition

Also see H165 Conversion Listing

Page 29 of 1984 catalog

H165B RING & PINION SETS (TYPE I)

The ring and pinion sets listed below will fit the 710 (from 4/73), HL510 (to 6/79) and 200SX/S10.

38100-N4905 3.545 R&P SET
38100-N5000 3.700 R&P SET
38100-N5100 3.900 R&P SET
38100-N5200 4.111 R&P SET
38100-N5300 4.375 R&P SET
38100-N5400 4.625 R&P SET
38100-N5505 4.875 R&P SET 


H165B RING & PINION SETS (TYPE II)

The ring and pinion sets listed below will fit the HL510 (from 7/79) and 200SX/S110 (to 6/81).

38100-W8600 3.364 R&P SET
38100-W8700 3.545 R&P SET
38100-W8800 3.700 R&P SET
38100-W8900 3.900 R&P SET
38100-W9000 4.111 R&P SET
38100-W9108 4.375 R&P SET
38100-W9208 4.625 R&P SET
38100-W9300 4.875 R&P SET

H165B LIMITED-SLIP ASSY

38420-N5020 L/S ASSY (TYPE I) 710 (from 4/73), HL510 (to 6/79) and 200SX/S10
38420-A1260 L/S ASSY (TYPE II) HL510 (from 7/79) and 200SX/S110 (to 6/81)
38423-N5020 SIDE GEAR (2)
38425-18000 PINION (4)
38427-21010 SHAFT
38431-21010 PRESSURE RING (2)
38432-21010 FRICTION PLATE (1.65MM) (4)
38433-21010 FRICTION DISC (1.65MM) (4)
38433-21011 FRICTION PLATE (1.90MM) (4)
38434-E4610 SCREW (4)
38435-21010 SPRING PLATE (1.65MM) (2)
38436-21010 SPRING PLATE (1.65MM) (2)

H165 AXLES BAFFLES
These baffles can be installed in any Datsun equipped with an H165 rear axles assembly.
pThey are designed to contain the differential oil in the center section.

43015-H7920 AXLE BAFFLE/RH
43016-H7920 AXLE BAFFLE/LH
DIFFERENTIAL OIL COOLER ASSY
21660-P9000 OIL PUMP ASSY
21664-P9000 BRACKET/OIL PUMP
21652-P9000 OIL COOLER ASSY

Swaps

Swapping an H165 into a 1200 can be great to match larger engine swaps. Sometime H165 is fitted because LSDs are more available for the H165 than for the H145 or H150.

See: Diff Widths

Datsun B110 (H145): 51.36 in (1305 mm) or 1185 mm axle flange-to-flange (less brakes) 
Datsun B310 (H150): 53.5 in (1360 mm) 
Datsun C20 Vannette: around 1400mm (105mm wider than a 1200) 
Datsun V510: 53 in (H165 wagon)
Datsun A10 wagon (leaf type) 49" between backing plates. 
* Estimated 53" axle wheel flange to flange. 

The best swap candidate for Datsun 1200 is the H165 assembly from a Datsun 1200 Truck (B120). But they are not direct bolt-ins, as the spring mounts, shock mounts and brake lines/cables are slightly different. Some minor fabrication is needed.

Likewise for Datsun 510 axle swaps.

For example, sedans need a shock bracket welded to the axle housing, which coupe housings and ute housings lack.
14584.jpg 11405.jpg

Datsun A10 axle is only 2 inches wider, so use positive offset (FWD) wheels to make up the difference. A10 has 4-link mounts, unless you get the wagon version which is leaf sprung.

200SX is 4-link, which brackets can be ground off and leaf pads added.

200SX, direct swap for B310 axle
th_IMG_20111001_182015.jpg

Donor Cars

Available from production vehicles: 3.3, 3.5, 3.7, 3.9, 4.1, 4.4, & 4.875 reference: diff ratios


Australia

You can get 4.1:1 and 4.875:1 ratios quite easy, it is the same diff that Bluebirds (rwd Maxima) and C20 (Datsun Vanette) -- some with aluminum centers

* A10 Stanza/HL510 (1978-1981): 3.700 and 3.875
* 180B (610) wagon: 3.889:1
* Bluebird 910 sedan: 3.889:1 and 3.700 (wagons used H190)
* 200B (810) wagon 4.111
  earliest versions before they switched to Borg Warner 
* Series 3 Bluebird wagon (910): 3.889:1
* Bluebird series 1 (L20B engine)
* Bluebird series 2 (L20B engine)

C120 Vanette

C120 (or C20) Ratios

3.889 V.SB.LD20
4.111 LD20
4.375 V.A15
4.875 T.A15, Z20
4.625 A15
5.143 A12

Japan

Namiha M10
Takaha M10
New Type M11

410

410 = C1 engine (998cc)
P410 = E1 engine (1189cc)
38320-04100 GASKET-gear carrier ALL
38100-04100 SET-GEAR, hypoid (41T:8T=5.125) S
38100-04101 SET-GEAR, hypoid (37T:8T=4.625) P,DF,L,N,DN
38100-08300 SET-GEAR, hypoid (35T:8T=4.375) 
* U,LU,UN,LUN,WU,WLU,WUL,WLUN & 4 speed. SS
38100-09600 SET-GEAR, hypoid (37T:9T=4.111) (op) 4 speed. SS
S = Standard
D = Deluxe
F = Fancy
N = automatic clutch
L- = left hand drive
-L = handling package?
R = 2-door sedan
SS = Sport Sedan
SS-R = 2-dr Sport Sedan 
U = export
W = Wagon
C1 = 2-bbl carb
E1 = 2-bbl Hitachi DAB-308-7
E1 = 2-bbl Nikki 2D-30CE <> 2D-30CE-2 Pedal clutch
E1 = 2-bbl Nikki Pedal clutch
E1 = 2-bbl Nikki 2D-30CF <> 2D-30CF-2 Automatic clutch
-K = SS = Twin Carburetor Hitachi HJE38W-1
SS = E1 (1200) Twin Carb
SSS = 411 R16 Twin Carb
SS = 411 J13 Twin Carb

411

411 J13 used H165
411 J16 used H190 

P411 = J13
38320-04100 GASKET-gear carrier 1.3 <> 38320-04110
38100-13201 SET-GEAR, hypoid (35T:8T) 1.3l (except P-P)
38100-17901 SET-GEAR, hypoid (37T:8T) P-P [LPG]
38100-14301 SET-GEAR, hypoid (37T:9T) (op.) SS

PB110

L14-powered B110.

38100-29000 HYPOID GEAR & PINION SET (35/9=3.889)
38300-A6100 GEAR CARRIER ASS'Y (35/9)
38310-A6100 GEAR CARRIER COMP
38102-28500 BOLT-drive gear (8) 

PB210

L14-powered B210.

38300-N5100 FINAL DRIVE ASS'Y (35/9=3.889) <> 38300-N5101
38300-N5101 FINAL DRIVE ASS'Y (35/9=3.889) (from '73-10)
38300-N5300 FINAL DRIVE ASS'Y (35/8=4.375) L14T
38100-N5100 GEAR SET-hypoid (35/9)
38100-N5300 GEAR SET-hypoid (35/8)
38310-N5000 GEAR CARRIER COMP
38102-28500 BOLT-drive gear (8)

GB211

GB211 is L16-powered B210.

38300-N5000 FINAL DRIVE ASSY (37/10=3.700) MT
38300-N5100 FINAL DRIVE ASSY (35/9=3.889) AT
38100-N5000 GEAR SET-FINAL DRIVE (37/10=3.700) MT
38100-N5100 GEAR SET-FINAL DRIVE (35/9=3.889) AT
38310-N5000 GEAR CARRIER COMP
38102-28500 BOLT-drive gear (8)

H165

3.700 38100-N5000
3.889 38100-N5100
4.111 38100-N5200
4.375 38100-N5300
4.625 38100-N5400
4.875 38100-N5505
PB110 3.889
PB210 3.889, 4.111, 4.375

H165B

Namiha

GB211 3.700, 3.889
JP710(7306-)/JP711 3.889, 4.111
PA10 3.700
PA11(-7906) 3.700, 3.889
P810 3.889
PJ811 3.889, 4.111
S10/S11/PS110(-7906) 3.700, 3.889
C210/PC210 4.111, 3.889
C211(-7906) 4.111, 3.889
PC120(-8006) A12,A14 4.111, 4.375, 4.625, 4.875, 5.143

Takaha M10

PA11(7907-)/RA11(7907-) 3.700, 3.889
PJ910 3.889, 4.111
YJ910 3.889
PS110(7907-) 3.700, 3.889
JS12 MT 3.700, 3.889
PC211(7907-) 4.111, 3.889
FJR30 CA18S 3.700
FJR30 Z18 3.889
JF30 3.900, 4.111
PJC31 3.889
SJC31 4.111 
PC120(8006-) A12,A14 4.111, 4.375, 4.625, 4.875, 5.143
C22 A15 4.375, 4.625, 4.875
 
3.154 38100-W8500
3.364 38100-W8600 
3.545 38100-W8700 39/11
910 8401-8601 5F 
3.700 38100-W8800 37/10
910 8210-8312
C31 8011-
R30 8210-
S110 7906- Z20E
S12 8308-8605
3.900 38100-W8900 35/9
910 7910-8605
C120 7907-
C31 8011-8210
R30 8108-8210
S110 7907- Z18
S110 8105- Z18E
4.111 38100-W9000
B120/B121 7907-8605
910 7910-8605
C120 7907-
C31 8011-
F30 8009-
S12 8308-8602
4.375 38100-W9100 35/8
C22 8509-8605 
4.625 38100-W9200 37/8
C120 7907- 
4.875 38100-W9300 39/8
C22 8509-8605 M10 RING GEAR BOLT
C120 7907-

New Type

M11 bolts

3.700 38100-G3100
M11 9508- (4WD.5P+4WD.7P).SR20DE
W10 9010-9301 4WD.GA16DS +4WD.SR20DE
W10 9301-9508 4WD.GA16DS +4WD.SR20DE
W10 9508- 4WD.GA16DS +4WD.SR20DE +SR20DET
910 8802-
S12 8605-
3.889 38100-G3200
910 8605 MT
4.111 38100-G3300
B120 8605-
910 8605- AT
910 8907- MT
4.375 38100-G3400
C22 8605-
TC22 8811- T.SB.A15S.MT +A15S.AT
4.625 38100-G3500
C22 8711-
C22 8711- V.A15
4.875 38100-G3600
C22 8605- 
TC22 8811- A12S

North America

1500 Roadster

Datsun Fairlady 1500 roadster used an H165 diff. The 1600 and 2000 used a H190.

  • 38100-10400 SET-GEAR, hypoid drive (35 : 9) [3.889] SP310/SPL310
  • 38423-04101 GEAR-side, differential bevel (2)

410/411

1964-1965 PL410 = E1 engine (1200, 1189cc)
1966-1967 PL411 = J13 engine (1300)
RL411 (R16 engine) uses H190
38100-13201 (35/8=4.375) 3-speed OPTION
38100-13225 [4.625?] 3-speed
38100-14301 (37/9=4.111) 4-speed OPTION
38100-14325 4-speed

610

1973 model year 610 Wagons came with a leaf-sprung rigid axles with H165 differential.

NOTE: 1974 and up used H190
38310-A6100 ASSY-CARRIER -0373
38310-N5000 ASSY-CARRIER 0473-
38310-N5000 ASSY-CARRIER AUTO 0873-
38100-29000 SET-HIPOID GEAR & PINION (35/9) -0373
38100-N5100 SET-HYPOID GEAR & PINION, 35/9 0473-0773
38100-N5100 SET-HYPOID GEAR & PINION, 35/9 (AUTO) 0873-0874

710

710 from 4/73 (TYPE I)

38100-N5100 SET-HYPOID GEAR & PINION, 35/9, 3.889 MANUAL -0874 WAGON
38100-N5000 SET-HYPOID GEAR & PINION, 37/10, 3.700 MANUAL 0974- WAGON
38100-N5200 SET-HYPOID GEAR & PINION, 37/9, 3.700 AUTO -0874 WAGON
38100-N5100 SET-HYPOID GEAR & PINION, 35/9, 3.889 AUTO 0974- WAGON
Sedan & Coupe
38100-29000 SET_HYPOID GEAR & PINION, 35/9, 3.889 MANUAL -0373
38100-N5100 SET-HYPOID GEAR & PINION, 35/9, 3.889 MANUAL 0473-0874
38100-N5000 SET-HYPOID GEAR & PINION, 37/10, 3.700 MANUAL 0974-
38100-28500 SET_HYPOID GEAR & PINION, 37/9, 3.700 AUTO -0373 
38100-N5200 SET-HYPOID GEAR & PINION, 37/9, 3.700 AUTO 0473-0874
38100-N5100 SET-HYPOID GEAR & PINION, 35/9, 3.889 AUTO 0974-
38320-04110 GASKET-GEAR CARRIER

S10

1977-1978 Datsun 200SX TYPE I

38100-N5100 HYPOID SET-GEAR & PINION (35/9), 3.889 MANUAL
38100-N5000 HYPOID SET-GEAR & PINION (37/10), 3.700 AUTO

A10

1978-1981 Datsun 510
1979 3.545
1980 CAN 3.545
1980-1982 USA 3.364
1981-1982 CAN 3.367
to 6/79 TYPE I
from 7/79 TYPE II
  • 38100-N4905 HYPOID GEAR & PINION SET, 3.545 -0579
  • 38100-W8700 HYPOID GEAR & PINION SET, 3.545 -0679
  • 38300-W8600 FINAL DRIVE ASSY, 3.364 USA 0779-
  • 38300-W8700 FINAL DRIVE ASSY, 3.545 CANADA 0779-0680
  • 38300-W8600 FINAL DRIVE ASSY, 3.364 CANADA 0780-

These are very similar to the setup in the Datsun B310 (Sunny/210) and so are good swap donor for the Sunny. They come in 4-link for the sedan/coupe, same as Sunny sedan/coupe and all North America Datsun 210s.

S110

1979-1982 Datsun 200SX to 6/81

North American models were fitted with H190 starting in 7/81

H165 models

* 38100-W8800 GEAR SET-FINAL, 3.700 0179- Z20E+Z22E
* 38100-W8800 GEAR SET-FINAL, 3.700 0880- Z22E.MT
* 38100-W8900 GEAR SET-FINAL, 3.898 0880- Z22E.AT

Parts

Bearings

Also see: Axle Shaft for the rear wheel bearings

Differential

38440-61501 BEARING ASS'Y-diff side (2) $49 USD
* also used by S110 H165
* SKF BR30207 $30 USD
SKF BR30207 specifications
Tapered Bearing Cup & Cone Set 
* I. D. mm 35 mm   (1.378")
* O. D. mm 72 mm   (2.835")
* Width mm 18.26mm (0.719")

Pinion Rear Support

38120-13201 BEARING ASS'Y-pinion rear $120 USD
* also used by:
  rear B12
  front 720,D21/D21U/WD21,D22U/WD22,S110,R50,S130/Z31
* SKF BR32306 $17
SKF BR32306 specifications
Tapered Bearing Cup & Cone Set 
* I. D. 30 mm    (1.181")
* O. D. 72 mm    (2.835")
* Width 28.75 mm (1.132")

Pinion Front Support

38140-13201 BEARING ASS'Y-pinion front $82 USD
* also used by:
  front 720,D21/D21U/WD21,M10/M11,910,B12,S110,S12,S130
* SKF BR32305 $36 USD
SKF BR32305 specifications
Tapered Bearing Cup & Cone Set 
* I. D. 25 mm   (0.984")
* O. D. 62 mm   (2.441")
* Width 24.25mm (0.994")

Side Gear

H165
38423-28500 GEAR-side, diff bevel
* 610.WAGON/710, A10, B120, S10/S110
38423-10600 GEAR-SIDE DIFF
* 38423-10600 is superseded by 38423-28500
* 411.J13
38423-04101 GEAR-side, differential bevel
* SPL310
H190
38425-00100 GEAR-PINION
* SPL311
38423-14600 GEAR-SET HYP
* 411.R16
H150
38425-G0300 PINION-mate diff bevel

Part Sources

Bearings are available from Nissan, or from bearing supply companies

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This page has been accessed 18,179 times. This page was last modified 22:41, 6 May 2014. Content is available under Datsun 1200 Club.