This is a compilation of weight for many MKII MR2 parts. Thanks to everyone who has helped weigh parts they removed, JekylandHyde, HarrisRacing, and others!
Jekyl and Hyde’s winter list:
+50 lbs - Sparco Seats with brackets/sliders (both seats)
-78 lb - OEM seats … my driverside seat weighed 39 lbs! (didn’t weigh the p-side)
+5 lbs - Simpson 5-point harness
-2 lbs = oem subwoofer
-11 lbs = fire wall carpet
-5 lbs = the carpet on the floors
-25 lbs = fiberglass hood replaces OEM hood
-3.5 lbs = Cruise control actuator
3 lbs 7.5 oz = Radio speakers from doors
6 lbs 4.2 oz = Radio & CD player
1 lb 11.4oz = Power Steering ECU
2 lbs 12.9 oz = Power Steering driver
12.8 oz = Cruise ECU and switch
1 lb 10.5 oz = ABS ECU
6 lbs 7.5 oz = A/C evaporator and related lines
3 lbs 12.1 oz = Center console storage box
-32 lbs 3.9oz = Power steering rack, motor, lines, and hardware
+13 lbs 4.1oz = Manual rack weighs so we have about a 19lb savings.
-14 lbs 14.6oz = A/C condenser, all lines and hardware
- 3 lbs 9.9 oz = Fog lights
-12 lbs 13.2oz = ABS actuator
-2 lbs 11.9oz = Airbag computer
-1 lb .5oz = Rear speakers
-2 lbs 6.9oz = Power antenna
-1 lb 13.6oz = Rear trunk spring
Additional Jekyl and Hyde List (many of these weights are ballpark figures)
Trunk carpet and sound deadening material: 7.8 lbs
Spare tire and jack: ~45 lbs
Metal support that holds up the spare tire: ~2 lbs
Lightweight flywheel: ~10 lbs
Lightweight Clutch: ~5 lbs
Lightweight Racing Seats: ~20 lbs
Cruise Control: ~6 lbs
Lightweight battery: ~30 lbs
Downpipe: ~20 lbs
Aftermarket exhaust: ~30+lbs
Lightweight Wheels: ~15 lbs
Carbon Fiber hood: 24.4lbs
Carbon Fiber engine lid and sides: ~12 lbs
Carbon Fiber trunk lid: 9.8lbs
Carbon Fiber T-Tops: ~15 lbs
Carbon Fiber Sunroof: ~8 lbs
Spoiler Removal: 13.6 lbs
Power antenna motor: ~2 lbs
Lightweight steering wheel with no airbag: ~4 lbs
Rest of the airbag system: ~5 lbs
Floor mats: ~6 lbs
Carpet and sound deadening behind the seats on the firewall: 11.0 lbs
Front trunk plastic lining: ~1 lb
Remove trunk spring: 2.0 lbs
Power steering: ~30 lbs
Stereo and speakers: ~25 lbs
Air conditioning system: ~45 lbs
Replace Pop up Headlights with Flush Mount: ~15 lbs (per side - talk to Troy a.k.a trueleo)
Replace glass with lightweight lexan or Plexiglas: ~25 lbs
Lightweight Mirrors: 1 lb per side, 7 lbs is stock
Lightweight engine accessory brackets: ~15 lbs
Lightweight aftermarket brakes: ~35 lbs
Custom aluminum suspension pieces: ~10 lbs
Custom aluminum wheel hubs: ~20 lbs
Carbon Fiber Doors: ~40 lbs
Aftermarket engine management system: ~10 lbs
Harmonic balancer on rear crossmember: ~2 lbs
Manual locks and window conversion: ~8 lbs
Gut the interior: ~50 lbs
Windshield sprayers and reservoir: ~10 lbs if full
Metal knee plate behind driver’s panel under dash ~ 2.2 lbs
Remove side impact beams ~ 2-3 lbs
Front bumper reinforcement ~ 16 lbs
Stock trunk lid: 14.8lbs
Stock '91 wing center section: 12.4lbs
Stock '91 wing side pieces: 1.2lbs each
94-97 wing: 6-9 lbs
98+ wing: same as 94 wing
Stock front hood: 31.4lbs
CF Trunk lid: 5lbs
Madpsi Competition Carbon Fiber Hood: 7.0lbs
Stock 91 Front Wheel+Tire: 35lbs
Stock 91 Rear Wheel+Tire: 40lbs
Stock 93 Front Wheel+Tire: 38lbs
Stock 93 Rear Wheel+Tire: 43lbs
Harris Racing Weight List
Stock Exhaust (downpipe+bpipe+muffler) 75
Wing Center 13
Wing Sides (per each side) 1.5
Spare and Jack 31.5
Ant. & trunk hinge 4.5
Heat shields and bolts 4.5
trunk carpet 5
spare tire plastic ad holder 2
stock intercooler 6
intercooler piping 7
AC compressor, bracket pulley, intercooler fan 26
Cruise control and bracket 3
Cut off metal plate behind muffler 3
stereo 30
Car floor carpet 11
back wall carpet 11
head lights (assy per each side) 6
mirrors (each side) 7
fog lights (only 1) 2
front bumper support 17.5
rear bumper support 13
engine deck lid plastic 14.5
engine deck lid metal 6
T-tops (one) 10
floor sound deadening tar (each side) 6
wipers and bracket (not motor) 2
A/C condensor 8
Ebrake Handle 4
exhaust heat shield (under trunk) 5
Airbag 4
Back window 7
Side glass with frame (triangular) (per side) 3
back window fiberglass surround 4
Cut out bumper parts 2
SSAC Intercooler kit 15.5
SSAC downpipe 8
Back window (impact acrylic) 0.5
Side window (impact acrylic) 0.25
Stock Seat (each) 34
Stock Hood 32
E brake parts 10
door panel (each) 5
Source: http://www.mr2.com/forums/general-info/Toyota-MR2-20522-race-weight-reduction-real-weights.html
Stock turbo exhaust (muffler+pipe) ~31 lbs
gas = 6 lbs a gallon at 72 degrees, MR2 tank can hold 14.3 gallons, so if you want to know how much that half a tank of gas is weighing you down it is 42 lbs (6 lbs x 7 gallons).
2gr-fe 369 lbs
1mz-fe 401 lbs
5s-fe ???
3s-gte - 421 lbs
3vz-fe 469 lbs
S-54 - 86.1 lbs no fluid
E-153 - 126.3 lbs no fluid
1zz - 225 lbs
http://www.locost7.info/files/engine/1zzfe.pdf
2zz - 250 lbs
http://www.sandsmuseum.com/cars/elise/thecar/engine/toyota.html
4age - 270 lbs
http://www.drift-connection.com/ae86-specs.php
2gr - 369 lbs
http://www.sportscarmonitor.com/blog/1045711_lotus-exige-gains-weight-with-evora-v-6-but-by-how-much
1mz - 401
3s-gte 421 lbs
3vz-fe - 469 lbs
Sources: http://www.mr2oc.com/showthread.php?t=115863, http://www.mr2oc.com/showthread.php?t=202095
Model Weights:
(These weights are vague imo because they don't specify options such as PS/ABS/CC/ which can be a 75 lb difference.91 T-Top N/A 5 spd MT - 2695
91 T-Top N/A Auto - 2775
91 T-Top Turbo - 2845
91 Hardtop N/A 5 spd MT - 2705
91 Hardtop N/A Auto - 2765
91 HardTop Turbo - 2860
(Yes I know they are saying the hardtop weighs more, this is why I think this weight listing is inaccurate)
Then there is the 91 toyota brochure:
91 N/A Hardtop 5 spd - 2,599
91 N/A T-ttop 5 spd - 2,626
91 N/A T-top Auto - 2,672
91 Turbo Hardtop 5 spd - 2,758
91 Turbo T-top 5 spd - 2,782
These weights seem much more accurate as MANY stock hardtop n/a mr2s with a lightweight exhaust, no PS/ABS/CC weigh between 2450-2500 (SCCA E-Stock MR2s) so this make sense with the options accounting for around 75 lbs of options and gas as well.