NoPistons -Mazda Rx7 & Rx8 Rotary Forum

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-   -   1st gen weight? (https://www.nopistons.com/1st-generation-specific-16/1st-gen-weight-69101/)

sen2two 02-21-2008 10:06 AM

how much does a 1980 weigh stock?



i think they weigh less than the 81 and above models?



mine is completely gutted, no dash, rugs, fuel cell, even all the harness is gone. about what should it weigh?

j9fd3s 02-21-2008 12:03 PM

because of the bumpers, thermal reactor and the non high strength steel for the body the 79-80's are about 80lbs MORE stock than the 81-83's



my stock full tank of gas 79 model was about 2420lbs



my stock full tank of gas 83 limited edition was 2330lbs



my gsl-se without ps was 2540....



stripped out they can get quite light, the imsa cars in 1979-80 were 2020lbs, so in some kinda street trim 2200 should be easy

sen2two 02-21-2008 03:55 PM

damn those heavy bumpers...i was looking at a way to get rid of them too!!!



did those imsa cars have all steel or fiberglass hood, fenders, ect...???



thanks for the info, you weighed them at a truck station?

defprun 02-21-2008 07:54 PM

My stockish 84 with most of the interior taken out was 2183

j9fd3s 02-22-2008 01:26 PM


Originally Posted by sen2two' post='895035' date='Feb 21 2008, 01:55 PM
damn those heavy bumpers...i was looking at a way to get rid of them too!!!



did those imsa cars have all steel or fiberglass hood, fenders, ect...???



thanks for the info, you weighed them at a truck station?



yeah we go to the dump, scale seems pretty good. i always use a full tank of gas too, cause its repeatable.



the imsa guys ran the steel bumpers right away, but fiberglass fenders, by the time 1980 rolled around they were running glass bumpers (mazdacomp used to sell em) and windows.



i think in modern times you want to keep the steel rear bumper, and run the 81 front, as its lighter. when you strip these cars down, you end up with a lot of weight on the left front, cause thats where the brakes, steering, driver and battery are. so keeping a little wieght on the rear might be a good thing

zeroecco 02-22-2008 02:26 PM


Originally Posted by j9fd3s' post='895098' date='Feb 22 2008, 11:26 AM
yeah we go to the dump, scale seems pretty good. i always use a full tank of gas too, cause its repeatable.



the imsa guys ran the steel bumpers right away, but fiberglass fenders, by the time 1980 rolled around they were running glass bumpers (mazdacomp used to sell em) and windows.



i think in modern times you want to keep the steel rear bumper, and run the 81 front, as its lighter. when you strip these cars down, you end up with a lot of weight on the left front, cause thats where the brakes, steering, driver and battery are. so keeping a little wieght on the rear might be a good thing

I am working on a CF/kevlar replacement for the steel equivlents. Should be less then 20lb each when I am done. They will be stronger then the steel ones too. I will keep everyone updated on that

sen2two 02-22-2008 09:57 PM


Originally Posted by j9fd3s' post='895098' date='Feb 22 2008, 12:26 PM
yeah we go to the dump, scale seems pretty good. i always use a full tank of gas too, cause its repeatable.



the imsa guys ran the steel bumpers right away, but fiberglass fenders, by the time 1980 rolled around they were running glass bumpers (mazdacomp used to sell em) and windows.



i think in modern times you want to keep the steel rear bumper, and run the 81 front, as its lighter. when you strip these cars down, you end up with a lot of weight on the left front, cause thats where the brakes, steering, driver and battery are. so keeping a little wieght on the rear might be a good thing



do the 81 and up fronts bolt right on??? 83-85 any different? how much lighter you think they might be?

j9fd3s 02-23-2008 01:28 PM


Originally Posted by sen2two' post='895131' date='Feb 22 2008, 07:57 PM
do the 81 and up fronts bolt right on??? 83-85 any different? how much lighter you think they might be?



81 and up bumpers bolt right up, the rebar is aluminum, so they are like 10lbs instead of 25.



also if you keep the 79-80 bumpers, in the us theres an extra reinforcement in it, bolts right in (or out), and its like 6-7 lbs...

sen2two 02-23-2008 01:37 PM

thanks...theres 2 1stb gens and the junk yard right now. imma see if i can get the bumper off them.



rear bolt up too? and there lighter???

pharmacy7 03-10-2008 11:30 PM

man, se's weigh that much?



im gonna have to strip mine down when i get my other one!

z-beater 03-11-2008 08:42 AM


Originally Posted by j9fd3s' post='895004' date='Feb 21 2008, 11:03 AM
my gsl-se without ps was 2540....





I will be doing a pretty in depth weight reduction in the next year or so. Hoping to drop 200-300 lbs.



I weighed my car a couple months ago and total weight was 2570. It has no AC or PS and lightweight racing seats. With that said, I think that my turbo weighs more than one of my seats. https://www.nopistons.com/forums/pub...IR#>/smile.gif

zeroecco 03-11-2008 02:43 PM


Originally Posted by z-beater' post='896326' date='Mar 11 2008, 06:42 AM
I will be doing a pretty in depth weight reduction in the next year or so. Hoping to drop 200-300 lbs.



I weighed my car a couple months ago and total weight was 2570. It has no AC or PS and lightweight racing seats. With that said, I think that my turbo weighs more than one of my seats. https://www.nopistons.com/forums/pub...IR#>/smile.gif

True that!! Thos evo seats I got are like four pounds each, I am serious about getting my seven below the 2k mark. There has to be a way to drop weight without making the car look like a piece of sheet metal. I took emissions off and put a new cat on. That dropped like 60~70 lbs. next was the nikki and manifold, that dropped another 8~10 lbs, header dropped 10lbs. seats were not that big I dropped 6 ~7 lb. Take the bumpers and replace with lightweight versions and you'll drop 60 + lbs. When I originally weighted my car I was at 2500lb with me fuel and backpack full of books. I weighed my yesterday and I came down to ~2200lb with me in it. I think your emissions and intake are your biggest things that you can change and drop some serious weight. Then of course those stupid bumpers that weigh a ton each!!!

rtlyons 04-13-2008 02:46 PM

im swapping a fd turboII into my 81 anyone have an idea on a weight. its totally gutted

j9fd3s 04-15-2008 11:35 AM


Originally Posted by rtlyons' post='898530' date='Apr 13 2008, 12:46 PM
im swapping a fd turboII into my 81 anyone have an idea on a weight. its totally gutted



13b is like what 20lbs over a 12a, maybe?



turbo stuff adds about 40lbs, again give or take, factory stuff is lighter, a gt54 t6 is prolly 80lbs by itself


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