Almost same weight reduction as my 95 except I have a vert. I also dumped the mufflers and resonator. Interesting.. Anyone recall the difference on the verts vs coupe? I want to say it was about +50 lbs. for the vert. My TC may be lighter than stock also and I currently have the rear carpet and radio removed.

 

the compressor weighs about 15. I dont remember how much the rest weighs but I doubt it would add up to more than 30 total. My 88 is near 2900 with no lexan or carbon yet. I still have a long way to go.

 

I was figuring the whole works would be around 50. I'll be losing all of it soon, evap core, compressor, condensor, bracket, tensioner, etc. I bought a scale to keep in the shop, I'll weigh it all up. I started a weigh file to keep track of what parts weigh. What else have you all removed for 2900? I'm always looking for more ideas!!!

 

the entire a/c unit I doubnt about be more than 30 is what I was trying to say. Maybe 35.

It would very hard to list everything but here is probably 90% of what I have done. head lights are very heavy by the way I wanna say like 25 pounds+ for the pair. I am looking at a light weight option there. I have a lot missing. Forgot to mention I have a lexan top. I run a single 3 inch exhaust with no cats. ton of weight came off there. its all the little stuff. the entire radio actually weighs a good chunk. headers. Horns, cruise. air. a/c I only run one manual seat, soon to be a racing seat. the rear interior is quite heavy... front is not nearly as bad on the 88. dash pad, dash panels. I know anyone with the stock 88 wheels can save 6 spounds by pulling the centercaps. light weight wheels and tires also help, but i only sort of have that with c5 wheels... kuhmo v710s are on average 4pounds lighter than street tires. I have a huge box with all the crap I have taken out and the box is very heavy. as you can tell, I am scatter-brained but I think I hit the high points. Future mods- (QA1 coilovers... not a steel bodied unit) Power window removal, lexan hatch, carbon race only hood (ton of weight in the stock hood with all the hardware), c5z wheels or c5 rears all the way around. lightweight battery. After I do a motor swap back to carb or an ls1 swap, there isnt a whole lot more that I can think of. I am sure I missed a few though. I think 2700 is very doable. 2600 was the goal. Ive been short on time so I havent done much in a while. if You are serious about racing. I would get the race only hood from EM and then you can swap your regular hood on and off without screwing with it.weight off the top of the car is ideal. get a lexan top if you dont already have one. Fuel cell is a good idea because you run less fuel and maybe get it move ahead of the axel? reducing the pendulum effect. I havent looking into this but I really should


One last thought... Has anyone done research on which manual trans is the lightest? I am considering all options I suppose

 

Without me, my car now weighs 2740 lbs with the entire interior gutted, carbed, no pass. seat, no A/C, no ABS, light drag wheels with street skinnies, 1/4th tank of gas. Barely anything left, but exterior body panels. Based on my rwhp, I have roughly 540ish to the crank and it is too fun for me. It would not really be considered an everyday street car for most people, but I still drive it everyday. 7 mpg isn't bad when you're having fun. I'd drive easy on the street and barely muster 14 mpg. Fuel consumption on the highway is about 24 mpg, but when I feel like having some freeway fun, it drops to about 15-18.

 

... and no light weight components? I feel very realistic wiht my goals. and yes, 540ish and 27xx would be amazing fun. I am having fun already on the autox-roadcourse

 

I got a ribbed pulley and reused the tensioner. I am happy with that setup.

 

For whats its worth, in my 85, I've dumped some weight, and had it weighed once at a NHRA scale with me still in the seat, 3/4 tank of gas and the scale showed 3250 lbs..... which surprised me, I weigh 270lbs and I have a mild steel rollbar that weighs 80lbs complete......I thought it would be heavier.

Either the scale was off and the car is heavier, or my 85 is a lightweight, because that means it weighs under 3000 lbs with the heavy rollbar. I dunno..... one or the other I suppose....

 

Surprisingly enough, I am still using that big glass hatch and the stock hood. The car weighed 3200 + or - 20 lbs when it was 100% stock. Yes that also was with a full tank of gas.

This car now is lighter than most 4 cylinder sport compact cars.

 

are you going any lighter or are you "content"

 

For now, it is fine. Realistically, the lightest you can make this car while maintaining "street legal" status would be about 2600 lbs. To go further, you would have to cut off /modify the bumper supports, use lexan for the windshield, windows and hatch, would need a 10 gallon fuel cell or smaller, and possibly modify the frame.

 

Wow, lots of interesting stuff flying around in this thread.

I've weighed my car several times, and anything under 2800 lbs is pretty light, under 2700 lbs is stupid light, and getting close to 2600 lbs is nuts.

Details about my car can be found on my site, http://www.mowhineracing.com, but most interior gone, half of the dash gone, no AC, no passenger seat, aluminum driver's seat on fixed rails, some stuff gone under the hood, etc. On a set of Longacre race scales, it is 2900 completely full of gas. If you drop it to 5 gallons (15 gallons @ 6.5 lbs/gallon), thats 2800 lbs. I do still have door beams and all glass.

Corner weights completely full of gas:
718 818
754 611

Any C4 claiming to be 2700 lbs or less is REALLY light, and has to be missing lots and lots of stuff. No disrespect to anyone, but some of the numbers posted here are VERY, VERY hard to swallow, no matter how certified the scale claims to have been.

 

I pretty much have followed all the content on your site, but I have no dash and no interior, no padding, no carpet, no A/C, no ABS. I do have a center aluminum piece I cut to hold my autometer gauges. I have my stock drivers seat, all glass and door beams. I thought about removing the door beams, but if someone T-bones me, I could be jabbed by a million shards of fiberglass. I would love to remove and/or the bumper supports and replace them with a much lighter version of mine to save another 80 lbs or so, but then my bumpers would probably flex really bad at high speeds. Then if someone rear ends me, well, we all know about the Ford Pinto, right?

I'm certain the scale that I weighed 2740 lbs on certified. If I go to a few more scales and it reads just that weight, plus or minus 10 lbs, then I'm sure this will be one of the lightest street C4s here. I'm still 140 lbs above my weight loss goal of 2600 lbs, but then I'd have to buy a CF hood, fuel cell, lexan to replace all the glass on the car and gut the doors even more. Fixed windows anyone? We all know how expensive that can be....

 

3200
-2740
460
That is a LOT of weight to lose. I personally dont see where its coming from .
You have the 350 in it right now, no? I could be wrong but I thought your 383 scattered.
I would guess 540chp at that weight you should be running 10s.

 

After re-reading your posts, your weight makes much more sense. I guess I got in a hurry when I read it the first time. I'm dying to know how much a CF hood would save. The stock hood seems quite heavy, and all that weight off of the nose of the car (high up too), would be really nice.

Any idea what your door bars weighed?

 

if you are turning it into a track car, you still need a cage. So even if you are at 2600, you will be adding quite a bit to that number and more than likely back to 3000 (unless you like driving around the city w/no dash etc.).

 

at full cage in moly is not going to weight that much. My car only needs a hoop and two down bars made of moly to complete the cage. RIght now the guy that installed everything said it only weighted 46lbs and that is with some extras like swingout bars and spring loaded latches. With it finished it might be pushing 70lbs.

I wish my car was only 2800lbs! But I have a tough time pulling things out of it. Still has the stereo etc.

 

The race only carbon hood from EM weighs next to nothing. Im not really concerned with the exact number that each item saves. just the end result. HOWEVER the web site says 28.5 pounds for the reinforced carbon hood and when I called they told me the race only hood is a lot lighter. It should be on my car by next spring.

 

Even a mild steel didnt bring my friends 89 vert over 2800.... dry sump system with and you said, no dash. I will alos add that his has 2 seats and some little extras that add up. ITs a serious machine that inspired me to a c4 instead of a c5.

 

I weighed my Mild Steel 5 pt roll cage assembly when I got it from S&W racecars years ago..... it came in at 70lbs, but I added some steel base plates for welding purposes, thus the total weight was approxmiately 80-90 lbs..... a chromemoly 5 pt kit is probably in the neighborhood of 30-40lb lighter.