H190

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Category: Differential

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The Hitachi H190 differential has a 190mm (7.49 inch) ring gear and can handle about 285 lb. ft. of torque, making it suitable for larger V6 or drag racing supercharged 1200s. H190 is the strongest live axle Hitachi fitted to Datsun cars (C200 from pickups is larger), and is available with lightweight aluminium carriers and a variety of stock ratios.

Contents 1 Gasket 2 Alloy 3 Ratios 4 Widths 5 Swap Notes 5.1 Side Gears 6 Nissan Competition 6.1 S110 6.2 620/720 6.3 Roadster 7 Donor Cars 7.1 Japan 7.1.1 LSD 7.1.2 510 7.2 North America 7.2.1 320 7.2.2 520 7.2.3 Roadster 7.2.4 410 7.2.5 510 8 620 9 720 10 S110 11 S12

Gasket

Center section gasket for H190 carrier.

• 38320-B3002 Gasket-cover $4.13 USD
  • 38320-B3000 GASKET-GEAR CARRIER
• 38320-25670 GASKET-GEAR CARRIER (10)
  • 38320-25660 GASKET-GEAR CARRIER (10)

Compare to:

• 38320-04110 GASKET-GEAR CARRIER H165
  • supercedes 38320-N5000, 38320-N5001

Alloy

35 pound H190 center section.

• Datsun 510 Wagon
• Datsun Fairlady Roadster
• Datsun 320 pickup

Ratios

Widths

• Datsun 320 pickup: 50" in H190 diff
• Datsun V510 wagon: 53" in

Gearset weight is approximatly 8 pounds.

Swap Notes

Several Datsun owners have swapped an H190 into the Datsun 1200s. The Datsun 320 pickup rear axle is one inch narrower than the Datsun 1200 unit.

Ratsun contains a nice photo essay with general information.

NOTE:

• There are at least four carrier types, which can only fit specific gear ratios
• There are various incompatible axle types/side gears, so swapping center sections doesn't always work

Side Gears

• 23-spline, early Datsun 320 pickup

  

• 23-spline, 510s and most late-60s and 1970s models

  

• 29-spline, S110 and pickups

  

Nissan Competition

1984 Nissan Competition catalog.

S110

The ring and pinion sets listed will fit the 200SX/S110 (from 7/81).

38100-P0806 3.364
38100-P0706 3.545
38100-P0606 3.700
38100-P0506 3.900
38100-P0306 4.111
38100-P0206 4.375
38100-P0106 4.625
38100-Y4006 4.875
38100-B4003 5.143
38100-T3003 5.429

620/720

H190 RING & PINION SETS (FROM 5/76)

[Same as S110 ratios above]

Roadster

H190 RING & PINION SETS

To install a 4.375, 4.625 or 5.125 ring and pinion into a third member equipped with a 3.700, 3.889 or 4.111 ring and pinion a 4.0mm/.157" ring gear spacer must be fabricated. Due to a smaller pinion shaft the 4.875 and 5.874 ring an pinion sts are interchangeable, but cannot be installed into third members equipped with other ratios.

[normal carriers]
38100-77700 3.700 R&P SET
38100-A5300 3.889 R&P SET
38100-25900 4.111 R&P SET

[high ratio carriers]
38100-26000 4.375 R&P SET
38100-77500 4.625 R&P SET
38100-37000 5.125 R&P SET

[special carriers]
38100-20600 4.875 R&P SET
38100-19901 5.874 R&P SET

Donor Cars

Japan

LSD

38420-A9980 3.70-4.11, 4.875-5.874

38420-16330 4.375, 4.625, 5.125

38420-B3400

38420-N9000 4-pinion
720 8004-8303 4-pinion 
S110 8204- HE41.FJ20

38420-41W00 2-pinion
720 8004-8303 2-pinion
720 8303-

510

510 Wagons and Vans came with a leaf-sprung rigid axles with H190 differential.

W510 Wagon
V510-S Standard Van
V510 Deluxe Van

Catalog C-091
38310-14800 COMP.-CARRIER, gear V&W
38100-22901 SET-GEAR, hypoid (37 T:8 T) [4.625] Van 
38100-22600 SET-GEAR, hypoid (37 T:8 T) [4.625] Van
38100-22501 SET-GEAR, hypoid (35 T:8 T) [4.375] Wagon [W510]
38100-23500 SET-GEAR, hypoid (35 T:8 T) [4.375] Wagon

North America

USA and Canada

Datsun SPL311/SRL311 "Roadster/Sports"
Datsun 410/411
Datsun 510 Wagon
Datsun 320 Pickup
Datsun 520 Pickup
Datsun 620 Pickup
Datsun 720 Pickup
Datsun S110 "200SX" from 1982-1983 (disk brakes)
Nissan S12 "200SX" 1984 (drum brakes)

320

Datsun 320 pickup uses a rear axles 50" in width with H190 diff -- narrower than a stock Datsun 1200 rear axle, making this a low-cost swap for high-power engines. But it uses 6-lug axles.

38100-08700 5.14 gearset

The 320 differential assembly uses 13 spline axles, so if swapping in a different pumpkin, swap the side gears too.

520

J13
Gearset was 39:8 (4.875)
38100-20659 SET-GEAR,HYPOID (39:8)
* superceded 38100-14901 & 38100-14900
38100-20600 SET-GEAR,HYPOID (39:8)

521 with L16
Gearset was 4.375
38100-B5500 SET GEAR HYPOID (35:8)
* superceded 38100-23500
38100-B3300 SET GEAR HYPOID (35:8)

Roadster

SPL311 = 1.6 SR16 engine
SRL311 = 2.0 U20 engine
38100-61000 RING & PINION 1.6L [1600] [3.889]
38100-25600 GEAR & PINION 1.6L [1600] [3.889]
38100-A5300 GEAR-SET HYP 1.6L [1600]
38100-77700 RING & PINION 2L [2000] [3.700]

410

1964-1965 410, 1200cc
38100-13201 3-speed OPTION
38100-13225 3-speed 
38100-14301 4-speed OPTION
38100-14325 4-speed

1966-1967 411 (3.889)
38100-A5300 GEAR-SET HYP 1.6L 411
411 OPTION 35:9  38100-14401 SET-GEAR,HYPOID(35T: OP.UT,LUT,WUT,WL UT
38100-61000 RING & PINION 1.6L 411
38100-25600 RING & PINION 1.6L 411

510

510 Wagons came with a leaf-sprung rigid axles with H190 differential.

1967-1973 Datsun 510 (Bluebird)

38310-14600 CASE-CARRIER,GEAR -1171
38310-A3000 CASE-CARRIER,GEAR 1271-
38100-61000 SET-GEAR PINION 35/9 [3.889] WPLA WPZ WPZA WPX WPXA
38100-A5300 SET-GEAR PINION 0770-1171
* superceded 38100-25600 SET-GEAR PINION 35/9 [3.889] -0670
38100-P0501 SET-GEAR PINION 35/9 [3.889] 1271-
38100-A3800 SET-GEAR PINION 37/10 [3.700] WAGON FLOOR SHIFT 1271-

620

Datsun 620 pickup USA came stock with these ratios:

38100-B3300 35/8 MT
38100-B3201 37/8 AT
* supercedes 38100-B3200

38100-P0101 37/8 -0775 AT
* superceded 38100-P0100 
38100-P0206 35/8 0578- AT 
38100-P0206 35/8 -0778 OP.MT(EXC CAMPER)
38100-P0206 35/8 0778- CAMPER
38100-P0306 37/9 0778- MT(EXC CAMPER)
38100-P0206 35/8 0578-0678 MT
38100-P0230 35/8 -0748 MT
* supercedes 38100-P0200
38100-P0200 35/8 MT
38100-P0230 35/8 0875-0478 AT

720

Datsun 620 pickup USA came stock with these H190 ratios:

NOTE: From 0183, 4WD uses C200 diff

38100-C6200 4.625      0784-     2WD.HD/W.Z24 
38100-P0106 37/8=4.625 0679-0680 T.LONG.4WD.L20B
38100-P0206 35/8=4.375 0679-0680 (L20B+Z22+Z24).AT + HD/T
                       0679-0680 T.REG.4WD +K/CAB.4WD
                       1182-     2WD.HD/W.Z24
                       0780-1282 T.LONG.4WD.Z22
                       0780-1282 4WD +HD/T
38100-P0306 37/9=4.111 0679-0680 L20B.AT
                       0679-0680 T.LONG.L20B.2WD
                       0780-1082 T.LONG.Z22.2WD
                       0780-1082 Z22.AT
38100-P0501 35/9=3.889 0183-     2WD.SD25
                       0979-     (T.REG+K/CAB).L20B.2WD.MT
                       0780-1282 (T.REG+K/CAB).Z22.2WD.MT
38100-P0506 35/9=3.889 0783-     2WD.AT.Z24
38100-P0607 37/10=3.70 
38100-P0606 37/10=3.70 0783-     2WD.(T+K/CAB).Z24.MT.F5
                       1182-0683 2WD.AT.Z24
38100-P0706 3.545      1182-0683 2WD.(T+K/CAB).Z24
38100-P0806 3.364      0183-     2WD.Z20
38100-R8160 4.375      1182-0784 (C.HD/T.HD/W+F.HD/T.DH/W).Z24

S110

Datsun S110 "200SX" Automatic from 1982-1983 (disk brakes)

NOTE: 1980-1981 uses H165
NOTE: Manual uses H165

38100-P0607 <> 38100-P0606
38100-P0606 37/10=3.70 0781- Z22.AT
38100-W8900 35/9=3.889 0880- Z22E.AT

S12

Nissan S12 "200SX" 1984 (1083-1184) w/CA20E engine (drum brakes)

38100-P0506 35/9=3.889 1083-1184 CA20E.AT
38100-P0606 37/10=3.70 1083-1184 CA20E.MT

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