Here is a list of weights I complied over the years. Some are from manual and some are from weighing them. these may not be 100% but it will at least give people a guide as to how much weight savings they might achieve. Note some things I don't have weights for.

Datsun 1200 Component Weight in lbs
Alternator 8.5
Denso Lightweight 5.5
Battery, Grp 24 36
Battery, Grp 51 (Civic) 26
Battery Miata 25
Battery, AGM UB12180 14.3
Battery, lawn tractor U1R-1 17
Battery, lawn tractor U1-9M 13
Battery, Lithium 2.3
Battery Tray
Bolts, misc
Block, A12 70.4
Block, A14 / A15 (w/main caps)73
Brake Drum, Alloy 240Z 6.45
Brake Drum, 1200 9
Brake, Caliper, 1200 5
Brake, Caliper, 280ZX 10.6
Brake, Caliper, 81 Cressida 7.95
Brake, Caliper, Wilwood 4.1
Brake, Master Cylinder ??
Brake, Rotor, 1200 9.7
Brake, Rotor, 280ZX 10.86
Brake, Rotor, slotted 280ZX 10.15
Brake, Rotor, 280ZX turn 18MM 9.72
Brake, Rotor Willwood w/hat 8
Brake, Hub, 280ZX 5
Brake, Hub, 280ZX Alloy 3
Bumper, Front 6.6
Bumper, Rear 8.14
Clutch Master ??
Clutch & Presure Plate 7.92
Connection Rod A12 0.946
Connection Rod A15 1.1
Control Arms
Crankshaft A12 23.76
Crankshaft 70mm w/sclp throw 20.9
Crankshaft A14 26.2
Crankshaft A15
Crossmember 10
Cylinder Head, Complete GX
Dashboard
Differential, H145 Steel carrier 92
Differential, H165 Steel carrier 114
Differential, H190 Alloy carrier 96
Door, bare 30
Door, bare -wdw frame,impact-bar,cut inner panel 24
Door, complete 40
Door Hinge 1
Driveshaft
Engine, Complete A12 w/header,FCR carbs, Alt, oil, no starter 171
Engine, A15 same as above, +12lbs 183
Engine, Complete, A12 192
Engine, Complete, A14 205
Engine, E15/13 161
Engine SR20DE (complete)330
Exhaust w/muffler
Fender, Frt Coupe steel 8
Fender, Frt Coupe, fiberglass 4
Fire System Halon 15
Firewall, rear alloy
Flywheel A12 20.8
Flywheel (lightened pr manual) 14.1
Flywheel A15 22.3
Flywheel tilton 5.72
Fuel Cell 5 gallon 29
Gasoline per gallon 6.3
Grill
Harness, cam lock 10
Harness, latch lock 7
Header / Extractors
Headlight, Assembly 5
Hood, Steel 21
Hood, Fiberglass 9
Horn 0.5
Manifold, Exhaust
Manifold, Extractor/Hdr
Manifold, Intake, Rnd Port
Mirror, Wink rear view 3.2
Mirror side view 1
Oil, 20w50 per gallon 7.34
Oil, 10w30 per gallon 7.26
Oil, 60w per gallon 7.49
Oil, 90w per gallon 7.5
Pedal Set
Piston, 73mm cast (w/rings & pin)0.726
Radiator, GX
Radiator, Standard
Radiator, Aluminum 3 core 11
Radiator, Standard (B14 Sentra) 15
Radius Arms
Rollcage, Autopwr 6pt 1.75 x .120 100
Rollcage, 8pt 1.75/.120 (rally spec) 124
Rollcage, 8pt 1.50/.120 revised 106
Rollcage, 8pt 1.50/.120 revised 85.56
Seat, Driver/Psngr with rails , each 22
Seat, Rear 26
Shell, Bare 400
Shock, Rear 3.16
Spring, Leaf 21
Spring, Leaf Composite
Spring, Pad 5
Spring, Shackle, set
Starter (early manual) 10.1
Starter (Auto) 11.9
Steering, Box 13
Steering, Column
Steering, wheel
Strut, assmebly 1200
Strut, assmebly 280ZX W/brakes 55
Sway Bar, Front 7/8 12.25
Sway Bar, Front 5/8 6.5
Tailight
Tank, Fuel
Tank, Fuel Cell (5 gallon) 19
Tie rods & drag link
Tire, 185/60-13 Hoosier TD 11
Tire, 155/80-13 Generic 13
Tow Hook 1
Traction bars
Transmission, 56A 4 speed 39.2
Transmission, 56A 5 speed
Transmission, 60L 5 speed 54.6
Transmission, 63 5 speed 80
Trunk Lid, Fiberglass 8
Trunk Lid, Steel 12
Undercoating/sound deadening
Valance 5
Water, per gallon 8.3
Wheel, 13" Watanabe Magsm 7.1
Wheel, 13" (Hotwire) 13
Wheel, 13" (Hotwire) w/Str TD 185/60
Wheel, 13" (CSSR) w/Str TD 185/60
Wheel, 12" steel 9.24
Wiper, Motor 2.5
Window, Door 5
Window, Mech 5
Window, Net Release Bar
Window, Rear 8
Window, Rear Lexan 4
Window, Side 5
Windshield
Windshield, gasket
Wiring, Harness

63 5 speed transmission is as heavy as a world class t5 s10 unit!
SR20DE have read can weigh 230lbs in race trim but trail the qr20de
about 30lbs overall due to die cast alloy top and bottom.
More compact all round with better narrower head etc.
http://www.stcengines.com/wp-content/ ... 11/BLACK-FRIDAY-QR202.jpg

A12 and A15 engines have little difference according to your data
I measured bare A12 and A15 blocks and weight drops dramatically
when bored 3-4mm from stock like removing 2 feet steel pipe in weight.

D some of the weights are taken from Nissan manuals and 1200.com I believe the 80lbs on the 60 series may be wrong I think it's more like 60 but that's what I found.

I will be coming back to the post and correcting weights as I get a chance to actually weigh various components myself.



There are some weights that are semi educated guesses like the bare shell at 400lbs. That one was based on some member input.

There are others like the Cressida caliper which while lighter has few choices in pad materials; fine for street but not so much for track work.

Then there are others like the fiberglass trunk lid that saves a mere 4 pounds.

I recall the T50 was around 62lbs whilst the 63A around 70 lbs
SR20DE head was 58 lbs vs 25lbs for A series head, L series was 38 lbs

Love the sr20de bottom end they weight about 96 lbs but heads are heavy!
Sleeving offset bores on 2nd and 3rd with some tig to fill some areas could
easily fit an L series head for an all alloy SRL20B bare donk @ 134 lbs