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Old 11-21-11, 11:19 PM
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cuting weight

I want to make my 88 fc as light as posibul. I already have the whole intearear striped from the front seats back,I removed all unnecisery systems and parts in the engine bay and in the front of the car before I put the engine in.But I want to make it even lighter so what are some good ways to make it even lighter.like parts to remove things to cut out,and the whole rear suspention is really heavy how can I make that lighter?
Old 11-22-11, 11:26 PM
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Buy one of my 15lb fiberglass and lexan hatches, stock one weighs 57lbs. Make sure you have an aluminum hood or I also have fiberglass hoods that fill in the headlight stuff in one piece.
Old 11-23-11, 07:03 AM
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Here is one of my threads just hitting one topic: Lightweight doors. I used the search function and typed in "lightweight".

https://www.rx7club.com/showthread.p...ht=lightweight

On my car, (a non-street legal car) the basic stuff has been removed: AC, PS, Cruise control, alot of blockoff plates. Tow hooks under car (4), spare tire, all emissions crap, straight pipe side exit exhaust, gutted doors/mirrors (see above thread), gutted most things under dash (hvac stuff), gutted metal under dash, trimmed emissions harness, trimmed various body harness, trimmed sunroof, removed all tar in cabin, and trimmed useless studs and removed useless bolts.

Thats all I remember having done.

Some other things that need to get done:
Build plexiglass rear hatch, plexiglass side windows, lightweight rims, gut hood under-stucture, and most importantly, go on a diet. I could lose an easy 20lbs to 30lbs.

My weight goal is around 2000lbs race ready. My 10th AE weighed around 2700lbs 100% stock, and after dropping a few pounds, I got it down to 2525lbs still with a full stock looking interior and exterior.
Old 11-23-11, 07:17 AM
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you could also loose weight???
Old 11-23-11, 08:13 PM
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How much is one of your 15 pound hatches or how do I make one. and I am losing weight slowly.
Old 11-23-11, 08:31 PM
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Do this to the sun roof if you have one...

Removes the steel sun roof panel, complete heavy *** steel rail system, and cut out frame tack welded to roof. Then fit a lexan or plexi glass to roof. Easily drops 50 pounds for close to free...




Old 11-23-11, 08:56 PM
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Damn Keith...when did you get all beast mode? You hitting that vitamin-s? Hahahaha!
Old 11-23-11, 09:52 PM
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Lol... Whooping *** with my car just wasn't enough anymore... Started traing in mixed martial arts about a year ago.
Old 11-23-11, 11:02 PM
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Originally Posted by sideways-FC
How much is one of your 15 pound hatches or how do I make one. and I am losing weight slowly.
$400 with the lexan installed. Shipping would be under $100 by greyhound express.

To make one yourself you just need to make a mold off the stock frame, make a pattern off the stock glass, make a frame, attach lexan. OK, so I left a few tricks and tools out to keep it short but it's a time consuming process, not really tricky if you've done fiberglass work.
Old 11-24-11, 02:03 PM
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well good for you for loosing weight being a wrestler i have to maintain my weight even on thanksgiving gotta meet saturday
Old 11-25-11, 12:39 AM
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well I will probably buy one of those hatches off of you in the future dont have the money right now just got a job.and does the sun roof assembuly realy weigh 50 pounds holy ****.I will deffinetly get rid of that.but I dont think I want to put a peace of plexy glass on there that would get to hot in the summer I would like to find a way to make the sun roof detachabul without the rail system.
Old 11-25-11, 08:38 AM
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The sunroof and associated parts (motors, rails, electrical) do have some significant weight to them...I'm not positively sure how much though. Maybe I will weigh the components when I get home from work.

On my sunroof hatch, I've removed all the rails, electrical, and motor, and went as far as cutting out all the support structure underneth and only the skin remains. Its currently screwed in place but I plan on attaching a permanent hinge on the forward side so the hatch can lift up a couple of inches from the back to help with venting hot air/smoke from burnouts.
Old 11-25-11, 08:53 AM
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I have no idea what it actully weighs. 50 pounds was just a number that I throw. hopefully bigdv519 will way it so we can know for sure.
Old 11-25-11, 12:27 PM
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I think I will try and make some sort of latching type system to hold the sun roof in place then I can undo the latches and take the sun roof off whenever I want.
Old 11-25-11, 10:55 PM
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Originally Posted by jgrewe
$400 with the lexan installed. Shipping would be under $100 by greyhound express.
Can you share a picture of the your fiberglass hatch,sounds interesting?
Old 11-27-11, 09:33 PM
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Found an old pic in my photobucket account, here ya go. This was before I added the straps that SCCA requires but this is what it looks like.

Old 11-28-11, 07:36 AM
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Originally Posted by jgrewe
Found an old pic in my photobucket account, here ya go. This was before I added the straps that SCCA requires but this is what it looks like.
Is that with the stock frame? Just the glass replaced?
Old 11-29-11, 10:44 PM
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No, that is my fiberglass frame, weighs about 4 lbs. When that pic was taken I hadn't installed the three dzus fasteners across the bottom/back. If you look closely at the corners you'll see holes, also one right in the middle.

The stock frame weighs about 17 lbs, the problem is all the weight is up at the top by the hinges in order to handle the weight of the glass.
Old 11-30-11, 02:56 PM
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Originally Posted by jgrewe
No, that is my fiberglass frame, weighs about 4 lbs. When that pic was taken I hadn't installed the three dzus fasteners across the bottom/back. If you look closely at the corners you'll see holes, also one right in the middle.

The stock frame weighs about 17 lbs, the problem is all the weight is up at the top by the hinges in order to handle the weight of the glass.
That looks great. I'm designing/building mine but it has an under-frame.

Great work on that hatch. A++
Old 01-21-12, 01:36 AM
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If any one is even still subscribed to this thread, is it hard to strip out all of my sound deadoning. what is the easiest way to get it all out.
Old 01-21-12, 02:21 AM
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Dry ice, chissel and a hammer or you can do it without the dry ice it just helps
Old 01-21-12, 12:11 PM
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cant I use heat to like a blow dryer.
Old 01-22-12, 12:43 PM
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Probably but ive never seen it done that way. Im in the process of taking mine out right now and im just using a chissel and hammer its pretty easy just time consuming
Old 01-22-12, 02:47 PM
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Heat will make it gummy but you can scrape it out when its soft. When I lived in Ohio I would just let the car sit outside on a freezing cold night and hit the stuff with a ballpeen hammer and it will come off in big pieces. Now that I live in Florida I have to use dry ice.
Old 01-22-12, 03:11 PM
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Don't try and heat it out. Turned out to be a big mess for me. Dry ice is the way to go...


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