Rear brakes
Rear brakes are traditional twin-shoe type, with manual adjusters of the wedge-and-tappet kind.
Overview
The same rear brake drum was used 1967-1994. It is an 8" diameter cast iron drum, that fits 1-3/8 wide brake shoes.
Starting from Oct 1989, Sunny Trucks started using a different brake shoe -- while still using the same drum as early 1200s. These late model 1200s use a self-adjusting rear brake system. Aside from the drum, all the parts differ from earlier rear brakes.
Maintenance
Don't let this happen to you!
Installation
B110 rear brake parts
Order of Wheel Cylinder shims:
Specs
- Linings (shoes)
- 35 x 4.8 x 195 mm (width x height x thickness)
- 1.378 x 0.189 x 7.68 inch (W x H x T)
- 1-3/8 x ~3/16 x ~7-11/16 inch (W x H x T)
- Total breaking area: 273 cm² (42.3 sq. in.)
- B110: (manual adjusting)
- Cylinder: 11/16" with front discs
- Cylinder: 13/16" with front drums
- B310: Drum LT-20 (auto adjusting)
- Cylinder: 13/16" (20.64 mm)
1978-1989 B120 ute used rear type Drum-LT20 with front type Drum2L20.
Finned Alloy Brake Drums
Works Racing
Finned drums like these were offered by Datsun Competition in Japan.
Datsun Competition Dept supplied it's favoured teams with many experimental parts that were never sold over the counter. 1200s had alloy drums and calipers fitted as wellas the alloy diff heads from the wagons.
Also see: Brakes, Nissan Competition
Isuzu Bellett
1969-1971 Isuzu Bellet 1600 GT (model G161) featured ALFIN rear brake drums.
http://i11.photobucket.com/albums/a164/KB10/th_Drums02.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/th_alfin-1.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/th_alfin-2.jpg
* 3 outer holes on face * keyhole-shaped slot for adjusting brakes on face * 8" diameter * marked "Izumi Al-Fin" * about 2.22 kg each 
Datsun Z-car
Larger 9" alloy drum are used on all S30 models (1971-1978 Fairlady/240Z/260Z/280Z). All 1200 brakes are 8", so the backing plate with brake shoes needs to be switched.
NOTE: Photos shows ex-race brakes so have extra holes drilled
- Fit under 13" wheels (as with original 240Z/260Z)
- The fins look like structural type, not cooling type.
- There are cast iron inserts where the brake shoes touch.
- The rest is aluminum
* 3 outer holes on face * round slot for adjusting brakes on face * 230 mm (9") diameter 
Nissan 43206-E4100 DRUM-BRAKE REAR * approximately 6.45 lbs. 
Cast Iron version * approximately 12.5 lbs * Centric 123.42002 Standard Finish * Centric 122.42002 Premium Finish specifications: 
RockAuto.com
Fitted Sunny Truck H165
http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/th_alfin-H165-1.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/th_alfin-H165-2.jpg http://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/th_alfin-H165-3.jpg
Datsun Roadster
1968-1970 Datsun roadster 1600/2000 used a finned alloy brake drum similar to the 240Z unit. 1965-1967 used cast iron version.
Nissan 43206-25500 * 9" diameter * lug holes for 7/16" studs (240Z uses metric studs) * center hole 70mm? (240Z is 68mm) * no brake adjuster hole (which 240Z requires) * squared-off fins (240Z fins are tapering) * height is about .090" different vs 240Z drums
Roadster axles do not have a centering flange, so the size of the lug holes is critical for correct drum centering. The 240Z drums have slightly larger holes and so will not center positively on roadster axles. An adapter can be fabricated for use in fitting 240Z drums on a roadster, which will also correct the drum height. It is close enough that some have used no adapter with varying success.
Roadster drums lack the adjuster hole which 240Z drums have
Weight
* B110 iron drums: 8 lbs * 240Z iron drums: 12.5 lbs * 240Z alloy drum: 6.45 lbs * Roadster alloy: 7.9 lbs * Bellet alloys: 8.9 lbs
Rear Brake Shoe
set (8 x 1-3/8, fits B110, B210 and B310)
- RAYBESTOS 371PG $15.36
- WAGNER PAB371 $16.52
- ACDELCO 17371B $19.02
- WAGNER BD60368 $39.89
B110 rear brake parts
Rear Drum Brake
- 44060-G0300 SHOE ASSY-REAR BRAKE SHOE 7510-7611
- 44060-G0325 7612-8910
- 43206-18000 DRUM BRAKE-REAR
- 44060-G1225 8910-
1989 October and newer Sunny Truck feature auto-adjust rear brakes:
Adjusters
44200-18000 B110 adjusters (manual, square adjustment nut)
44200-18000ᴳ ASSY-ADJUSTER REAR BRAKE 44204-18000ᴳ WEDGE-adjustor 44205-18000ᴳ TAPPET-adjustor 
1200 late star aduster (self-adjusting with star wheel)
44200-W5211ᴳ ADJUSTER ASSY-REAR BRAKE, RH
44201-W5211ᴳ ADJUSTER ASSY-REAR BRAKE, LH
Same as B310 A14/A15 type
Others
B310 small H83 (automatic with star wheel, A12-powered models)
44200-H8300 ADJUST. ASS'Y RH
44201-H8300 ADJUST. ASS'Y LH
https://i297.photobucket.com/albums/mm219/ddgonzal/Datsun%201200/wiki/H83_adjustor.jpg
B310 A14/A15 adjuster assembly (automatic with star wheel)
44200-W5211 ADJUSTER ASSY-REAR BRAKES,RH
44201-W5211 ADJUSTER ASSY-REAR BRAKES,LH
- superseded 44200-W5210/44200-W5210
B310 star adjuster SCREW (A14/A15 models)
44202-W5210 SCREW RH
44203-W5210 SCREW LH
Part Numbers
To 7302
13/16" diameter * 44100-18000 ASS'Y-CYLINDER-rear wheel (13/16") B10, B110 to 7302 * Fits early B110 with front drum brakes RockAuto $13
11/16" diameter * 44100-H0500 CYLINDER ASS'Y-rear wheel (11/16") * Fits early B110 with front disc brakes RockAuto $30
From 7303
44100-H3100 CYLINDER ASS'Y-rear wheel (13/16") * for late B110 with front drum brakes
44100-H3300 CYLINDER ASS'Y-rear wheel (11/16") * for late B110 with front disc brakes
Rear Disc Brakes
For customizing the rear suspension, see Rear Disc Brakes.