Parts interchange..
Strict Interchange
Close interchange means the parts fit as-is without modification.
Ashtray (rear): 4-dr is same as B110
Armrest
Coat hanger and Assist strap (?)
1974 Room lamp (dome light)
1974 Muffler (has resonator!)
1974 USA Mirror
(interior) Handbrake cover (new part is larger than original part)
Almost all engine parts except block and fuel pump
Fuel filter, Oil filter
A12- and A13-powered versions rear axle assembly (see notes in Differential article)
Front Seats. Use the B110 rails with the B210 seats
Leaf spring parts (except main leaf)
A12 models -- entire 56-series Transmission
Rear brake shoes & drums
Radiator (smaller models are strict interchange, larger ones fit with simple bracket extensions)
Wheels, 12" as-is, 13" with tire change
Tires (13" tires require corresponding 13" wheels)Front Seat belts are a three-point with retractor that bolts to the B-pillar. Just like B110 seat belts. The advantage is they are a superior single-belt design without a separate shoulder belt.
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Loose interchange
Loose interchange is where the part fits -- but may work or look significantly different.
Distributor (improved with internal condensor)
Air cleaner
Seat belt hook (can it be fitted to B110?)
Steering wheel 2-spoke 391mm (B110 is 400mm)
Rear brake shoes
Rear Axle: 1974 complete H145 axle assembly fits B110Has improved, larger wheel bearings
Larger axle tubes, so get all the U-bolts and fittings
Improved oil control, with double-sealed bearings and anti-brake comtamination configuration
ISO clamp system for quieter ride at low speeds
[*]H145 diff center: 3.9 ratio same as B110[*]H145 Propeller Shaft, same as B110 (1974 model)[*]Throttle cable[*]56A 4-speed transmission with 2mm engine plate[*]60-series transmission 4-speed has strengthened gears and bearings and improved rear seal[*]Engine-to-transmission gusset (improves wikipedia:NVH)[*]Clutch (improved for quieter ride), pressure plate (higher pressure) and throwout bearing[*]Improved front engine mounts with roll-control
1974: softer
A14 models: harder
[*]Automatic Transmission[*]Strut Parts
Strut bearing, oil sela, spring seat upper and dust cover (but not the top hat)
Swaybar larger than B110 (17mm). 1974: 18 mm.
[*]Rear Leaf spring leafs (except main leaf, which is longer)[*]Wheels are 12" (Australia) or 13" (USA) and fits B110[*]Rear wheel cylinder. 13/16 size same as B110 with front drums, but larger than B110 with font discs (11/16).
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No Interchange
For details, see B210.
Steering, Front suspension, and brakes: Many Datsun 610 parts fit B210 (USA models). These differ from B110
Engine crossmember (wider than B110)
Diff U-bolts and mounting pads (wider)
Rear Wheel bearings (larger)
Lug nuts. B210 uses larger 13/16 size. B110 uses 3/4 size
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Swap Parts
Modification is needed
Console. Large size looks promising
<a href="http://datsun1200.com/modules/mediawiki/index.php?title=63-Series_Transmission" title="63-Series Transmission" style="background-color: transparent; color: rgb(37, 82, 213); text-decoration: none; ">63-Series Transmission 5-speed from 1976-1978 models
Clutch slave cylinder: 11/16 instead of 3/4 of B110
Strut swaps into B110, as complete with rotor and brake, if using some of the B210 lower suspension parts
Coil spring (after cutting for length, B210 is longer). Virtually identical spring rate, so no advantage
???
Rearview Mirror
Sun Visor