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

RACE CARS how much do you guys WEIGH?

Thread Tools
 
Search this Thread
 
Old 12-21-06, 01:17 AM
  #1  
frikken wankers
Thread Starter
 
T Rex's Avatar
 
Join Date: Dec 2006
Location: washington state
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
RACE CARS how much do you guys WEIGH?

Done some searching and it seems like 2000# and under is pretty hard but a few guys are listing 1800s and one said somethin like 1780 just wonderin if that is possible without hacking the body!
Old 12-21-06, 01:57 AM
  #2  
The Shadetree Project

iTrader: (40)
 
Hyper4mance2k's Avatar
 
Join Date: Jul 2002
Location: District of Columbia
Posts: 7,301
Received 3 Likes on 3 Posts
I highly doubt it. My 83GSL with a 13bt in it was 2600 with it guted behind the seats and me in the car. I'm230 so the car was 2360. I'd like to hear from some1 else who has actually weighed their car. And I have a Momo Corse seat so that's lighter too...
Old 12-21-06, 02:36 AM
  #3  
Terrified.

 
Naegleria_Fowleri's Avatar
 
Join Date: Oct 2004
Location: Muncie, IN
Posts: 3,463
Likes: 0
Received 0 Likes on 0 Posts
I would really like to know how much the racecars weigh as well. I am really curious as to how low weight they can get down to.
Old 12-21-06, 04:01 AM
  #4  
Eats, Sleeps, Dreams Rotary

iTrader: (17)
 
twinkletoes's Avatar
 
Join Date: Apr 2006
Location: Las Vegas, NV
Posts: 3,740
Likes: 0
Received 4 Likes on 2 Posts
If it was an SA I can see the weight at 2000 maybe.
Old 12-21-06, 07:42 AM
  #5  
ERIC

 
Yellow '79's Avatar
 
Join Date: Oct 2005
Location: Southern CT
Posts: 964
Likes: 0
Received 0 Likes on 0 Posts
cheak out the race car tech section, they may beable to help you more
Old 12-21-06, 09:18 AM
  #6  
Duct-tape fixes all

 
no_name's Avatar
 
Join Date: Oct 2005
Location: Toronto, Canada
Posts: 1,000
Likes: 0
Received 0 Likes on 0 Posts
There is some Norweigen chap who has their car down to like 1600lbs (or something), with an insain roll cage in it. I found it on google once. It is a FB to die for. The roll cage has to be really heavy, it is very elaborate. The car has fiberglass hood and front fenders formed as 1 if I rember corectly. It has lexan windows everwhere. I have no doubt that you could get any Rx-7 down to 2000lbs with out replacing any boddy panels.

You just have to really gut the sucker.
Old 12-21-06, 10:10 AM
  #7  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,841
Received 2,605 Likes on 1,848 Posts
Originally Posted by twinkletoes
If it was an SA I can see the weight at 2000 maybe.
stock to stock the SA is 80lbs more than an 81-82 FB. the steel bumpers, and thermal reactor are most of the difference
Old 12-21-06, 10:14 AM
  #8  
Banned. I got OWNED!!!
iTrader: (2)
 
dj55b's Avatar
 
Join Date: Oct 2004
Location: London, Ontario
Posts: 6,122
Likes: 0
Received 1 Like on 1 Post
I weighed mine at about 2390lb with a full interior, you cna find what i have done to the car here:

https://www.rx7club.com/showthread.p...ghlight=weight

as you will be able to tell everything interior was left on, I have a 12a NA as oppose to a 13 B with all the turbo stuff which can quickly add up a hundred or so. So 2000# i can see that no problem
Old 12-21-06, 10:58 AM
  #9  
sellout

iTrader: (4)
 
Midwest 7's's Avatar
 
Join Date: Jan 2005
Location: Lawrence KS
Posts: 3,078
Likes: 0
Received 0 Likes on 0 Posts
ive got a gutted se, i'll drive it up to the recyclers in the next couple of days and get the weight.
i have been curious myself.
Old 12-21-06, 12:49 PM
  #10  
Senior Member

iTrader: (4)
 
1985GSL's Avatar
 
Join Date: Oct 2004
Location: Hudson WI
Posts: 386
Likes: 0
Received 0 Likes on 0 Posts
Mine weighed in at 2450 with a big stereo and full carpet and stock interior. and about 1/2 tank of gas. Now my engine is out and my turbo is coming this week so then ill weigh it after i get the turboed engine back in
Old 12-21-06, 01:02 PM
  #11  
Rotary Enthusiast

iTrader: (1)
 
speedturn's Avatar
 
Join Date: Jul 2004
Location: Rocket City, Alabama
Posts: 1,035
Likes: 0
Received 2 Likes on 2 Posts
My 1979 GTU road racer currently weighs 2080 pounds; I have had it down lighter in the past. It has a very heavy, very rigid cage in it, and it has a G-Force GF-5R transmission that weighs 50 pounds more than the Mazda transmission. Naturally aspirated engines are much lighter than turbo engines; I have a peripheral port engine.

The first few hundred pounds are cheap and easy to remove from a first gen, then it starts getting very labor intensive and very expensive. At the stage I am at now, it is now costing about $50 a pound to replace a part with a lighter one. I have 'glass front fenders, nose, hood, rear fenders, and lexan windows. Ever time I do a lightening/modifying project, I have carefully saved each scrap of material removed and weighed it, and compared it with the replacement race part.
Attached Thumbnails RACE CARS how much do you guys WEIGH?-06mitty_traffic_med.jpg  
Old 12-21-06, 03:00 PM
  #12  
premix, for f's sake

iTrader: (6)
 
Sgt.Stinkfist's Avatar
 
Join Date: Jun 2004
Location: madison, WI
Posts: 1,438
Likes: 0
Received 5 Likes on 5 Posts
Originally Posted by j9fd3s
stock to stock the SA is 80lbs more than an 81-82 FB. the steel bumpers, and thermal reactor are most of the difference
i thought the 4 speed S model SA's were the lightest stock , oh well i could be wrong. im pretty sure you can get very light w/ a full tube chassis and fibreglass body panels
Old 12-21-06, 04:45 PM
  #13  
Rotary Enthusiast

iTrader: (8)
 
legokcen's Avatar
 
Join Date: May 2003
Location: Albany, GA
Posts: 841
Likes: 0
Received 1 Like on 1 Post
Originally Posted by speedturn

RACE CARS how much do you guys WEIGH?-06mitty_traffic_med.jpg

Is that from Road Atlanta?
Old 12-21-06, 09:13 PM
  #14  
Strength & Unity

iTrader: (1)
 
2wankel's Avatar
 
Join Date: Jul 2004
Location: CT
Posts: 1,946
Likes: 0
Received 0 Likes on 0 Posts
Nice car!

Originally Posted by speedturn
My 1979 GTU road racer currently weighs 2080 pounds; I have had it down lighter in the past. It has a very heavy, very rigid cage in it, and it has a G-Force GF-5R transmission that weighs 50 pounds more than the Mazda transmission. Naturally aspirated engines are much lighter than turbo engines; I have a peripheral port engine.

The first few hundred pounds are cheap and easy to remove from a first gen, then it starts getting very labor intensive and very expensive. At the stage I am at now, it is now costing about $50 a pound to replace a part with a lighter one. I have 'glass front fenders, nose, hood, rear fenders, and lexan windows. Ever time I do a lightening/modifying project, I have carefully saved each scrap of material removed and weighed it, and compared it with the replacement race part.
Old 12-21-06, 09:25 PM
  #15  
I can has a Hemi? Yes...

iTrader: (2)
 
Directfreak's Avatar
 
Join Date: Dec 2001
Location: 3OH5
Posts: 9,371
Likes: 0
Received 4 Likes on 3 Posts
2750 on a 1985 GSL-SE
with Full Interior, Spare, Jack, 6 point steel cage, 1/2 tank of gas, Ford 8.8 rear End - without me in it.

Last edited by Directfreak; 12-22-06 at 01:43 AM.
Old 12-21-06, 09:44 PM
  #16  
frikken wankers
Thread Starter
 
T Rex's Avatar
 
Join Date: Dec 2006
Location: washington state
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
2wankel how much would you say the cage has added? and i would assume that you have no interior or dash etc.
Old 12-22-06, 12:01 AM
  #17  
The Shadetree Project

iTrader: (40)
 
Hyper4mance2k's Avatar
 
Join Date: Jul 2002
Location: District of Columbia
Posts: 7,301
Received 3 Likes on 3 Posts
Funny all these responses, and only 3 people that have actually weighed their cars...
Old 12-22-06, 06:48 AM
  #18  
Racing is life!

iTrader: (2)
 
cpa7man's Avatar
 
Join Date: Jan 2003
Location: Grapevine, TX
Posts: 2,173
Likes: 0
Received 0 Likes on 0 Posts
My ITA car weights 2325 lbs with a 200 pound driver, minimum allowed weight is 2280 wet. My EP car used (may it RIP) to weight 2150 with same driver, minimum allowed weight is 2050 with stock transmission. The car I'm currently building will have all the lightening tricks available and I hope it comes in at 2100 with me at 175. Going drycell battery and will try no alternator as well.

Take a look at this link for a discussion of 1st gen weight, and some hints. http://prodracing.com/prodcar/viewtopic.php?t=7076
Old 12-22-06, 09:37 AM
  #19  
Full Member

 
sctty's Avatar
 
Join Date: Jun 2002
Location: MD
Posts: 60
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by legokcen
Is that from Road Atlanta?
Yes.

When in doubt, listen to the (particially obscured) sign that reads 'ad Atalanta'.
Old 12-22-06, 11:40 AM
  #20  
Moderator

iTrader: (3)
 
j9fd3s's Avatar
 
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,841
Received 2,605 Likes on 1,848 Posts
Originally Posted by Hyper4mance2k
Funny all these responses, and only 3 people that have actually weighed their cars...
my stock 83 limited with a full tank and no driver was 2330lbs.

havent wieghed the SA yet, expecing 2400right on the nose
Old 12-22-06, 12:10 PM
  #21  
Strength & Unity

iTrader: (1)
 
2wankel's Avatar
 
Join Date: Jul 2004
Location: CT
Posts: 1,946
Likes: 0
Received 0 Likes on 0 Posts
Originally Posted by T Rex
2wankel how much would you say the cage has added? and i would assume that you have no interior or dash etc.
not my car, i was just complimenting his
Old 12-22-06, 02:21 PM
  #22  
Rotary Enthusiast

iTrader: (8)
 
legokcen's Avatar
 
Join Date: May 2003
Location: Albany, GA
Posts: 841
Likes: 0
Received 1 Like on 1 Post
Originally Posted by sctty
Yes.

When in doubt, listen to the (particially obscured) sign that reads 'ad Atlanta'.
Damn, I didn't even see that. I just recall the signs overhead coming out of Turn 12 going on to the front straight. I love that track!
Old 12-22-06, 07:26 PM
  #23  
love the braaaap

 
85rotarypower's Avatar
 
Join Date: Jul 2003
Location: Bognor, Ontario
Posts: 3,771
Likes: 0
Received 3 Likes on 3 Posts
The 84-85 GSL-SE is the heaviest of the RX-7's, while any GS is probably the lightest without the sunroof. The GS curbed at about 2360lb while the GSL-SE was close to 2500, in stock form. Any modification will affect the weight in some way. Directfreak's car is a GSL-SE with full interior, full roll cage, heavy ford 8.8 rear end, and all the parts for the turbo, which in themselves are heavy. 2700lb for a car like that is pretty good IMO. 2200lb seems to be the easy number to get to. Just strip anything heavy you can off the car. Its getting past that that is the hard part.
Old 12-22-06, 08:02 PM
  #24  
Full Member

 
MtotheIKEo's Avatar
 
Join Date: Aug 2006
Location: Lodi, Ca
Posts: 175
Likes: 0
Received 0 Likes on 0 Posts
My 79 SA weighs 2500 with me (175) in it. I took out the spare tire and tools, and thats about it. It has a 5speed and 13B
Old 12-22-06, 11:35 PM
  #25  
frikken wankers
Thread Starter
 
T Rex's Avatar
 
Join Date: Dec 2006
Location: washington state
Posts: 11
Likes: 0
Received 0 Likes on 0 Posts
Cpa7man looks like your the lightest so far the only car under 2000 lbs what are the lightening tricks you are doing to get 1900 lbs ?


Quick Reply: RACE CARS how much do you guys WEIGH?



All times are GMT -5. The time now is 10:54 PM.