lightweight rx7 - component weights
I've found a number of threads interesting as they relate to lightweight fx rx7's:
https://www.rx7club.com/2nd-generation-specific-1986-1992-17/how-light-can-you-get-fc-what-more-can-i-remove-856588/ https://www.rx7club.com/race-car-tech-103/adding-lightness-lll-438477/ https://www.rx7club.com/race-car-tech-103/adding-lightness-ll-418976/ https://www.rx7club.com/race-car-tech-103/adding-lightness-407951/ https://www.rx7club.com/2nd-generation-specific-1986-1992-17/continuing-what-does-stuff-weigh-196297/ Here's my contribution (all from an 87 TII)... speaker box over rear strut tower, with insulation, with cover, no fasteners RH 4.0 lbs LH 4.0 lbs driver's door panel w/o fasteners, w/o power window switch 8.0 lbs passenger door panel w/o fasteners, w/o power window switch 8.6 lbs driver side quarter panel molded carpeting, has some small brackets attached 1.8 lbs rear bin w/ fasteners RH 3.6 lbs LH 3.6 lbs drivers side fiberglass support for rear bin 3.0 lbs rear carpet with mat underneath 13.2 lbs rear jack, cover, fastener, jack handle 3.8 lbs aftermarket manual retractable antenna w/ wire and nut 0.2 lbs passenger side fiberglass support for rear bin w/ fasteners 3.4 lbs passenger side quarter panel molded carpeting 2.2 lbs carpet padding under bins (both sides) 3.0 lbs misc pads under bins 1.4 lbs glove box lid and screws 1.8 lbs passenger side sun visor, clips, screws 1.2 lbs ashtray, cigarette lighter 0.2 lbs AC compressor (this is off a 2000 LS1 v8 engine) 14.2 lbs AC compressor bracket (ls1) 2.2 lbs condenser (unknown make/model) 5.8 lbs accumulator, hoses, fasteners, pulley, belt 2.0 lbs front strut tower covers (both sides) 0.2 lbs arm rest console w/o lid, security light, mirror switch 1.2 lbs aftermarket alpine cd player 4.2 lbs passenger side lower dash w/ speaker 3.8 lbs security box/brain from passenger side lower dash, misc fasteners 1.0 lbs speaker, cover, misc fasteners from driver's side lower dash 1.2 lbs |
I put the car on Longacre scales today. Should be pretty accurate.
Without driver, 1/2 tank of gas: Total 2589 LF 724 RF 705 LR 574 RR 585 Front 55%, Rear 45% With driver and gear: Total 2806 LF 787 RF 729 LR 672 RR 616 Front 54%, Rear 46% |
good info
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I spent some time pulling the front end off to remove the front bumper support. Here are the *real* weights...
bumper support 10.8 lbs 2 support brackets with fasteners 4.6 lbs 2 support tubes with fasteners 0.4 lbs total weight savings from pulling out front bumper support 15.8 lbs I removed my sunroof, and I'm working with a guy to have a fiberglass plug made. I can confirm the sunroof, with the brackets, motor, seals, etc was 27.8 lbs. |
Originally Posted by bradg
(Post 11093254)
I removed my sunroof, and I'm working with a guy to have a fiberglass plug made. I can confirm the sunroof, with the brackets, motor, seals, etc was 27.8 lbs. What do the S5 seatbelt tracks weight? Or the stock NA steel hood? |
Logicon ventilation controller 1.4 lbs
Blower motor 6.3 lbs Heater core + box 6.0 lbs Blower motor relays and wiring jumper 0.4 lbs Radio surrond, upper vents, idiot light bar, trim 1.8 lbs 2 (of 3) horns 0.6 lbs Inner door seals 1.4 lbs Total 17.9 lbs |
Said goodbye to another 43 lbs:
6.4 driver's side door inner structure (cut out with angle grinder) 6.4 passenger's side door inner structure (cut out with angle grinder) 8.2 passenger's side door glass 8.2 driver's side door glass 6.2 driver and passenger window motors 4 passenger side window seal, window trim and tracks, door handle 4 driver side window seal, window traim and tracks, door handle 43.4 |
Passenger seat, oem T2, manual 33.4 lbs
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4 Attachment(s)
instrument cluster 2.4 lbs
instrument cluster hood w/ switches 3.0 lbs defrost dash cover 3.3 lbs dash wiring harness 1.6 lbs dash 20.4 lbs ventilation mixer box behind dash (w/o heater core or AC evap) 9.4 lbs |
Originally Posted by bradg
(Post 11055310)
I put the car on Longacre scales today. Should be pretty accurate.
Without driver, 1/2 tank of gas: Total 2589 LF 724 RF 705 LR 574 RR 585 Front 55%, Rear 45% With driver and gear: Total 2806 LF 787 RF 729 LR 672 RR 616 Front 54%, Rear 46% |
Originally Posted by fc323
(Post 11694772)
Does this prove That the lsx does throw off the balance of the car?
Since I weighed it, I've added an accusump (in rear), removed headlights, bumper cover, sunroof, and dash, changed to a larger radiator and oil cooler. I would expect the distribution has changed. Later this year, I plan to add a 6-point cage. When I re-weigh it after that, I will corner weight it until I'm satisfied. Also note the car started off with 183 hp at 2,849 lbs (15.56 lbs per hp). It currently sits at 2400 lbs with 398 hp (6.03 lbs per hp). Safe to say the performance and dynamics of the car have changed drastically. |
1 Attachment(s)
New weight = 2407 lbs
This is without driver, roughly 4/5 tank of gas, no corner weighting. Some of the funny x-weights showing up are probably related to less than perfect weighting conditions - sloped garage floor, dropping the car onto the pads rather than driving it, etc. |
NIce! I wonder how much my car weighs. Ill find out soon
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