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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.
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Identification
H165, H190 is 8-stud removable center. H145/H150 is also 8-bolt/8-stud.
New Type uses M11 bolts, all others use M10 bolts.
Chassis ID code is HC
Flange
H145: scalloped flange, bolt hole rectangle 36 x 50 mm
H150: 45 x 54 mm round or rectangular flange
H165: 45 x 54 mm round or rectangular flange
There are some differences between flanges on H165's, some long (~217.5mm from carrier mounting face to driveshaft flange face), some short (~202.5mm). Depth of hole for centering boss varies also.
H190: 50 x 60 mm, round or rectangular
Size
Measure the gear
H145 measures 145mm H150 measures 150mm H165 measures 165mm H190 measures 190mm
Pre-1980
B10: H145, 3.900 VB10: H145, 4.375 (van/wagon) B20: H145, 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: H165 GB211: 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) 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
EXAMPLE: HF38 = H190 with 3.889 ratio was factory fitted
Axle code is on Chassis Identification plate 1980-on, in the engine compartment. 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
39 divided by 11 = 3.545 ratio
Pinion gear is similarly stamped
Factory LSD has a sticker on the back of the diff housing.
Chassis Identification plate 1980-on contains axle code:
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
C120 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
Datsun 1200 Factory H165
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-
Gasket
Center section gasket for H165 carrier.
- 38320-N5000AS Gasket-carrier $4.27 USD
- supersedes 38320-04110 GASKET-GEAR CARRIER H165
Compare to:
- 38320-B3002 Gasket-cover H190 $4.13 USD
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
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
USA Datsun Roadster - 1500 SP310, 3.88 ratio, 23 spline side gears
Nismo
LSD 2-way with 24 x 23T splines H165: 38420-N5020 3.889 to 4.625 namiha 旧型 H165B low-tooth: 38420-N5020 3.700 to 4.875 並歯型 H165B high-tooth: 38420-RS110 3.154 to 4.875 高歯型 takaha
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.
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
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)
C20 Vanette
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
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
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)
610
610 Wagons came with a leaf-sprung rigid axles with H165 differential.
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 S10 (Silvia/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 A10 (510/Stanza/Violet) 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/Silvia 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