1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

wieght reduction on street car

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Old Mar 18, 2005 | 12:15 AM
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wieght reduction on street car

ok, ive done a search, and frankly there is not a good many of how too's or examples of what people have done to make thier fbs lighter, this is what i want to create,


ill list what ive done so far,and what i plan to do, and you all can add to the list

since this will be a mainly track car, i dont have a front bumper, the front plastic is held on seperately,

i have a 6pt chromoly cage, which only added about 50 lbs, so that doesnt count for much,

i plan to lighten or remove the rear bumper,

scrape all the sound dampener stuff from the floor

ive lightened the doors by cutting out the beam on the inside,

rats nest removed

plan on doing fc front steering swap ie undercarriage

plan to remove sunroof

no ac, no power steering, no interior

plans for lexan windows, in the rear

if there is anything obvious i am mission please fill in gaps thats what the post is for,

it would be good if you had listed wieght redux you have done, then list how much wieght you saved, but if not thats fine,

lets find some non structural stuff that can be removed safely, ie streetable but mainly track use... any imput helpful
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Old Mar 18, 2005 | 12:23 AM
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Cross-drill the entire body.
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Old Mar 18, 2005 | 12:29 AM
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Cut off your left leg and use a broom stick to work the clutch. 30-50lbs

Remove one of the rotors?

you don't REALLY need rear brakes.

Cut some spokes outta your wheels.

Use a lawnmower battery (this one really works)

Run less oil.

fuel cell. (this one works also)

Hair cut.


Glad I couldn't help,

--Alex

Last edited by Alex-7; Mar 18, 2005 at 12:33 AM.
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Old Mar 18, 2005 | 12:50 AM
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I wouldn't be removing door bars without an 8 point cage. And I just finished installing my 6 point, I have the door bars for the cage, but I don't think I'll put them in. Just getting to old to climb over ****.
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Old Mar 18, 2005 | 12:51 AM
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Originally Posted by Alex-7
Cut off your left leg and use a broom stick to work the clutch. 30-50lbs


More like 60 lbs here.

Get an auto tranny, use the choke cable as your throttle, remove all pedals and levers, install a 1 7/8" trailer ball in the center of your seat bottom, cut off both legs. 60-120 pounds.

Remove the sterring wheel outer ring and all "spokes" but one. Install a ball swivel. Cut off your left arm. 15 to 40 pounds ( depending on both how many years you've been driving a 7 without power steering AND whether you're married or not ).

Learn to hop on one hand.
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Old Mar 18, 2005 | 12:54 AM
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Originally Posted by DAVID GRIMES

install a 1 7/8" trailer ball in the center of your seat bottom, cut off both legs. 60-120 pounds.

bwahahahahahahah!
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Old Mar 18, 2005 | 12:55 AM
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Remove the Irons on the engine, but keep the Aluminum housings. saves alot.
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Old Mar 18, 2005 | 01:00 AM
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Originally Posted by Max7
Remove the Irons on the engine, but keep the Aluminum housings. saves alot.
Remove the tranny and run the engine straight to the driveshaft.
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Old Mar 18, 2005 | 01:54 AM
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Transversely mount the 12A, put 4x110 hole pattern in your flywheel to direct drive your panasports.

Don't worry about steering. Just drift wherever you want to go.
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Old Mar 18, 2005 | 02:02 AM
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Ok, here`s a serious one. Remove dashboard, replace it with a basic plate. You only really need a few meters anyway, since you will be mostly on track.

Why just change the rear windows? Go full out lexan! Replace fenders with fibreglass!

For rigidity, weld that sunroof up!

Remove all original exhaust, go straight pipe. (Get cotton for ears)

Mine is currently down to 1020 kg, with a full tank!
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Old Mar 18, 2005 | 02:18 AM
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fill tires with helium. shave heavy tread off tires. remove glass replace with plastic wrap.
remove paint, replace with magic marker. move fuel cell next to engine, save on heavy fuel line.
like they say, move engine to rear, remove tranny and driveshaft. have fuel pump pour fuel
directly into engine, no carb less weight.
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Old Mar 18, 2005 | 02:46 AM
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Remove RX-7..............replace with Lotus7
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Old Mar 18, 2005 | 07:37 AM
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You guys are a pisser. Seriously though, the dash is quite heavy. And do a search, theres a more serious thread around here on this. Ah, one more freebie, a Miata rear pumpkin (ts aluminum).
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Old Mar 18, 2005 | 09:51 AM
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Originally Posted by Rx7carl
Ah, one more freebie, a Miata rear pumpkin (ts aluminum).
Tell that to my foot after I dropped one on it... It's steel.

1999 Miata, 4.30:1 + Torsen:


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Old Mar 18, 2005 | 05:21 PM
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Originally Posted by Rx7carl
You guys are a pisser. Seriously though, the dash is quite heavy. And do a search, theres a more serious thread around here on this. Ah, one more freebie, a Miata rear pumpkin (ts aluminum).
That Miata pumpkin, is it a straight install into a rear end?
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Old Mar 18, 2005 | 05:26 PM
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BTW: How much do you weigh, autopaul?
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Old Mar 18, 2005 | 06:12 PM
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grab a sawzall and give' er hell!
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Old Mar 18, 2005 | 08:53 PM
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replace your side windows with really thin lexan and glue them into place with epoxy , remove window regulator assembly.

remove headlight motors and lock headlights in up position if your sanctioning body requires operable lights, if not gut all the crap there and tack weld the lids shut in place

replace door skins with fiberglass skins, change fenders, hood and nose panel out with fiberglass ones

if you only race in fair weather romove windshield wipers etc, unless sanctioning body requires.

replace rear hatch with lexan

kenn
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Old Mar 18, 2005 | 09:27 PM
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Originally Posted by autopaul
scrape all the sound dampener stuff from the floor
that sound dampening will remove maybe 6-10 lb's... u could probly lose that from urself and have the same effect! haha
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Old Mar 18, 2005 | 11:49 PM
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Originally Posted by Snapshot
BTW: How much do you weigh, autopaul?
Hell, let Snapshot drive for you. She doesn't have a single ounce of fat on her. And if her exotic cars are any indication, she probably can out-drive you, too.
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Old Mar 19, 2005 | 01:00 AM
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Use a Aluminum water housing out of a second gen engine. Just use a first gen water pump and tap the one hole that is left and use that for the alterator bracket.
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Old Mar 19, 2005 | 01:07 AM
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Originally Posted by Elysian
that sound dampening will remove maybe 6-10 lb's... u could probly lose that from urself and have the same effect! haha

i beg to differ, i removed it all from my car and put it all in a singe large bag, weighed in at over 40lbs.
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Old Mar 19, 2005 | 01:08 AM
  #23  
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How much did the empty bag weigh ?
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Old Mar 19, 2005 | 01:09 AM
  #24  
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lol, less than a lb.
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Old Mar 19, 2005 | 01:11 AM
  #25  
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just checkin' to make sure you didn't use some old oiled burlap croaker sack that weighed 32 pounds empty
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