Yep but see my man some of us already have a daily with good A.C!

 

Could you lighten the frame without comprimising Strength? I.E. Driling holes in point in the frame, where the effects are nil or negilible? I know they do that with some cars. Though the FB frame I have no clue if its plausible engineering wise...

 

I think that they are unibody, so unless you had a roll cage you couldn't. Correct me if I'm wrong though...

I'd love to go outside right now and lose a few pounds with my drill.

 

I'd love to do that myself! ^.^ But like you said it may be that the Uni-body design won't allow for it.

I have no clue about the FB frame so I wouldn't even want to touch it without doing a **** load of research XD

 

I finally transfered the title back to me from the friend i sold my 85 GS to 5 years ago. I've been driving her around this weekend and couldn't get over the funny smell, then I realized it's because my buddy is an avid pot smoker! Yet another reason for removing the interior, and i would like to reduce the amount of combustable material inside the car. She's destined to be a track car...

Kinda sad for destroying an interior that is otherwise in pretty great shape.

 

im sure that your carpet will gain a few pounds of dirt and sand over the period of 20+ years maybe get some new carpet

 

i haven't seen this idea thrown around very often.

How about converting from bucket headlights to fixed headlights. I would think the removal of the motors and buckets would knock off around 20 pounds.

 

Or simply toss the headlight motors and rig up a resisted track that can be lifted up or pushed down. Something that will stay either way. Oh wait, that's what I'm doing

 

I have done most of the above mentioned Mods. The one thing I might add is an aluimum flywheel saves quite a bit.
By the way this is one of the best threads I have seen in a long time in this section

 

lol ive done this its very ez.. and you can use stock brackets all you have to do is over extend the head light arm and it will hold its self up

when you look at it you can see what you can cut away witch is like 90% of it.. it works gr8 my car has been like that for a long long time

will show pics if needed

 

i would like to see them, can you retract them and then be able to put them back up or do they stay up?

 

they can go up or down.. but you have to do it by hand. i will take some pics tomorrow and show how i did it

cheers PaTricK

 

I didnt know they made aftermarket driveshafts for FB's, our are pretty light are they not, i went to go pick one up the other day and I though it would be heavy so i put some OOMPH if you will, into picking it up and I almost hit myself in the face, I would say that they might be less that 50lbs...please tell me if im wrong

 

2220LBS here. Without me ..I"m 180

 

O.o no one knows if you can drill out points in the frame to lighten it up? Withot affecting structrual integrity... That'd be interesting to see if possible...

 

frame? what frame?............unibody

 

Okay then! What would teh structrual fesiability be to lighten the unibody?

 

Plasma cutter

any real cutting to the body to lighten it makes the car weak and unsafe.. any1 doing mods like this should also have a cage!!!! no questions asked

 

i just read three page's of garbage, i thought i was going to learn something.
bad form

:AA:

 

I like the thread! We all think about weight to power ratios, specially with the first gens. Unfortunately the thread shows you hit a point of dimishing returns really quick with SA/FBs. BUt it is funny to see the creativity and lengths people are willing to!!!

 

Some of you mentioned that the window glass is lighter in the cars with automatic windows. Does anyone know by how much? If it is only a couple of pounds, then it's not really worth it. How much weight difference is there?

 

Did you cut out the door panels? If you did....can you still roll the windows down?

 

As long as you can mount the regulator in the door, you'll be able to roll the windows down. The window cranks attaches to the window regulator, not the door. The regulator has a splined shaft where the window crank slides over, and then you screw it on....

 

I know this tread is old but I'm reviving it and I hope it stays that way.

Here's a list I made from all the parts and mods I did to my GS* RX7. I am not saying this is accurate. Most of it was guess work. Anyone can chime in and correct me. I have yet to actually weight the car on a scale.

*note = Car has the stock interior look. GS model with GSL rear end (weight should be a few pounds more with the LSD but I omitted it). Car has a glass moonroof installed, No A/C, no power steering, no power windows or locks. Has EQ with tape deck stereo, manual radio antenna (kept breaking), no cruise ctrl. The car all the options available except the Auto trans and cruise ctrl.

I believe the GS is the best option for lightweight. Minus the moonroof option. But I live the moonroof, especially with the glass upgrade I made.
SA were heavier too. They had heavy steel bumpers.

Does anyone know why the 80-81 series 2 was the lightest ?? All i can think of is the single speaker build into the dash and no side trim on the car haha..

Parts removed
————————————————————————————————————————————
Weber 36DCD carbs installed = 72
Sub-zero starting assist = 3
Hot-start assist = 1
exhaust support bracket + Fuel skid plate = 2
Brake booster + components = 1.5
Pulley+a/c mount bolts+Engine lift mounts = 1
Charcoal canister with bracket = 1
Engine wiring harness = 1
Rear sway bar removed and components = 10
Middle dust shields (trimmed fat) = .5
Beehive cooler to front Aluminum cooler = 2
Lightweight battery+tray = 30
Rear tow bracket hitch pass. side = 1
motor mounts replaced with hockey pucks = 1
Rear electric motor antenna = 1
Lightweight flywheel = 12
Dummy Tire and Jack = 34
Rear insulation mat = 8

182 lbs = 83kg

Car weight = 971kg approx.
RX7 GS 1984 - Stock Curb weight = 1054kg = 2325lbs
Diet Curb weight = 971kg = 2136lbs

1159 # 1160 stock weight @ 50/50
126 # 56lbs weight loss
1050 # 1086 = 49/51 weight distribution approx.

65L Full Fuel tank = 100 lbs = 45 kg

 

I have never weighed an RX-7 that was 50/50 weight distribution. They were always at least 100lb nose heavy.