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Datsun 1200 cars (sedan/coupe/wagon) use an H145 differential in the Rear Axle Assembly.

1 Differential Repair
2 Gear Sets
3 Parts
- 3.1 Ring & Pinion
- 3.2 Differential
4 Nissan Competition

Differential Repair

Replacing diff bearings or spider gears? Or ring & pinion? The procedure for re-assembly the differential gear carrier is very complicated. Be sure to get the factory service manual.

We recommend: Just swap the whole center section "pumpkin" from a 1971-1973 B110 or 1974 B210 in there. It will be cheaper and certainly easier, someone has one for free. The center section rarely goes bad unless the diff runs low on oil, so your chances of getting a good used one are high.

Yes, B110 and 1974 B210 center section is identical. You could also swap a 1975-1978 pumpkin they say you need a 2mm spacer between the pumpkin and the housing.

Backlash between ring gear and drive pinion
H145: 0.10 to 0.15 mm
R160: 0.1 to 0.2 mm
H165: 0.13 to 0.18 mm
H190: 0.15 to 0.20 mm

Gear Sets

B110 3.90 Datsun 1200 1970-1973 
B110 4.11 Wagon

B10 4.111 Datsun 1000 1967-1970 37:9
B10 4.375 van (VB10) with alloy carrier 35:8
B20 4.625 truck (ute) 37:8

B210 3.90 -7409 (North America & Japan) [39:10]
B210 7409- see H150

Datsun B120 (1200 Sunny Truck) gear sets - see H165 (HC41)

Datsun Competition (later Nismo) used to sell every factory H145 ratio: 3.9, 4.111, 4.375, 4.625. See "Nissan Competition" section below.

Parts

Suppliers - USA

Ring & Pinion

B10 Datsun 1000 H145 alloy carrier
38310-18000 COMP.-CARRIER, gear ALL
* 38315-18000 STUD (fixing differential bearing cap) 4 ALL
* 38317-18000 WASHER (fixing differential bearing cap) 4 ALL
* 38318-18000 NUT (fixing differential bearing cap) 4 ALL

JDM B10 Datsun 1000 H145 gear sets (will fit all Datsun 1200)
38100-18000 SET-GEAR, hypoid with pinion (37 T: 9 T) [4.11] Sedan & Coupe
38100-H0700 SET-GEAR, hypoid with pinion (35 T: 8 T) [4.375] Van
* superceded 38100-18100 
38100-15400 SET-GEAR, hypoid with pinion (37 T: 8 T) [4.625] Truck
38100-G0400 SET-GEAR, hypoid with pinion (37 T: 8 T) [4.625] Truck (from '69-Nov)

Datsun 1200 gear sets
38100-H1000 3.900 R&P SET Sedan & Coupe
38100-H1100 4.111 R&P SET Van

Differential

Differential Side Bearing

O.D: 62mm

38440-H1000 ASSY-BEARING DIFF SIDE (2 needed)
* replaces 38440-18000 ASSY-BEARING DIFF SIDE
* SKF BR30206 $22 USD

SKF BR30206 specifications
Tapered Bearing Cup & Cone Set 
* I. D. 30mm     (1.181")
* O. D. 62mm     (2.441")
* Width 17.25 mm (0.679")

* HGM Liftparts, $9.36
* ebatmus.com $13 and up
* NSK HR30206J
* KOYO 30206JR
* NTN 30206

Nachi E30206J

Schuck's
* SKF BR30206 O'Reillys/Schucks/Grand/Kragen $16.99
* National Bearing 30206
* BCA 30206 - $29.99
* Motor City S30206 - $9.88
RockAuto.com
* TIMKEN Part # 30206M - $14.96
* BCA/NATIONAL Part # 30206 - $16.74

Application: 
Alfa
Mitsubishi
Ford
Mazda
Nissan
Plymouth
Porsche
Subaru
details

Pinion Seal

B110, through 1974 model year B210. Probably fits B10 as well.

38189-18000 SEAL-OIL DRIVE PINION
SKF Oil Seal #550219 Partsamerica.com $22.99

Pinion Bearing

Rear

38120-18000 ASSY-BEARING DRIVE PINION REAR
* SKF BR32206

SKF BR32206 specifications
Tapered Bearing Cup & Cone Set 
* I. D. 30mm     (1.181")
* O. D. 62mm     (2.441")
* Width 21.26 mm (0.837")

Fits many cars, GM, Nissan, Isuzu, Mazda, Opel, etc.

Rockauto
* BCA/NATIONAL Part # 32206 - $19.84
Partsamerica
* SKF BR32206 - $18.99

Front

38140-18000 ASSY-BEARING DRIVE PINION FRONT
* Koyo 303/22X
* NSK HR303/22CNF

NSK HR303/22CNF specifications
Radial Taper Roller Bearing
* I. D. 22 mm (0.866")
* O. D. 56 mm (2.205")
* Width 17 mm (0.669")

Shims

Also need these:

* 38165-H1001 SPACER-DRIVE PINION BEARING $17.00
* 38154-G04xx WASHER-ADJUSTING DRIVE PINION $3.83 USD
Where xx = 00 through 17 for different thicknesses
* 38154-G0400 WASHER-ADJUSTING DRIVE PINION T=2.74
* 38154-G0401 WASHER-ADJUSTING DRIVE PINION T=2.77
* 38154-G0402 WASHER-ADJUSTING DRIVE PINION T=2.80
* 38154-G0403 WASHER-ADJUSTING DRIVE PINION T=2.83
* 38154-G0404 WASHER-ADJUSTING DRIVE PINION T=2.86
* 38154-G0405 WASHER-ADJUSTING DRIVE PINION T=2.89
* 38154-G0406 WASHER-ADJUSTING DRIVE PINION T=2.92
* 38154-G0407 WASHER-ADJUSTING DRIVE PINION T=2.95
* 38154-G0408 WASHER-ADJUSTING DRIVE PINION T=2.98
* 38154-G0409 WASHER-ADJUSTING DRIVE PINION T=3.01
* 38154-G0410 WASHER-ADJUSTING DRIVE PINION T=3.04
* 38154-G0411 WASHER-ADJUSTING DRIVE PINION T=3.07
* 38154-G0412 WASHER-ADJUSTING DRIVE PINION T=3.10
* 38154-G0413 WASHER-ADJUSTING DRIVE PINION T=3.13
* 38154-G0414 WASHER-ADJUSTING DRIVE PINION T=3.16
* 38154-G0415 WASHER-ADJUSTING DRIVE PINION T=3.19
* 38154-G0416 WASHER-ADJUSTING DRIVE PINION T=3.22
* 38154-G0417 WASHER-ADJUSTING DRIVE PINION T=3.25

Nissan Competition

From the 1984 Nissan Competition Catalog

H145A RING & PINION SET (TO 8/74)
* 38100-H1000 3.900 R&P SET
* 38100-H1100 4.111 R&P SET
* 38100-H0700 4.375 R&P SET
* 38100-G0400 4.625 R&P SET

H145A LIMITED-SLIP ASSY (TO 8/74)

H145A DIFFERENTIAL ASSY
The H145A 3rd members will fit the 1200 and B210 (to 8/74) 
and do not include limited slip units.
* 38300-H1000 3.900 3RD MEMBER
* 38300-H1100 4.111 3RD MEMBER
* 38300-H0700 4.375 3RD MEMBER
* 38300-G0500 4.625 3RD MEMBER
H145A AXLE BAFFLES
Differential Oil Cooler Assy

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H145

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