So the goal this winter was to take some weight out of the car. I had a goal of 100 lbs. The car started at 2897 at the end of the season last year. I ended up shattering that goal, to the tune of 183 lbs lost. (On top of that i took off 8 lbs off myself).

Not that it matters much, but I also probably helped lower the center of gravity by a bit, by getting rid of the sunroof, lowering the drivers seat 1" and passengers seat by 2.5".

So the car is at 2714 lbs. Now where can I find 15 more lbs to get to 2699.

http://www.flickr.com/photos/kevindoe/6869147664/http://www.flickr.com/photos/kevindoe/6869147664/ by http://www.flickr.com/people/kevindoe/, on Flickr

http://www.flickr.com/photos/kevindoe/7015262981/http://www.flickr.com/photos/kevindoe/7015262981/ by http://www.flickr.com/people/kevindoe/, on Flickr

http://www.flickr.com/photos/kevindoe/7015272729/http://www.flickr.com/photos/kevindoe/7015272729/ by http://www.flickr.com/people/kevindoe/, on Flickr

http://www.flickr.com/photos/kevindoe/6869156384/http://www.flickr.com/photos/kevindoe/6869156384/ by http://www.flickr.com/people/kevindoe/, on Flickr

http://www.flickr.com/photos/kevindoe/6869153858/http://www.flickr.com/photos/kevindoe/6869153858/ by http://www.flickr.com/people/kevindoe/, on Flickr

http://www.flickr.com/photos/kevindoe/7015260653/http://www.flickr.com/photos/kevindoe/7015260653/ by http://www.flickr.com/people/kevindoe/, on Flickr

http://www.flickr.com/photos/kevindoe/7015271127/http://www.flickr.com/photos/kevindoe/7015271127/ by http://www.flickr.com/people/kevindoe/, on Flickr

http://www.flickr.com/photos/kevindoe/6869158030/http://www.flickr.com/photos/kevindoe/6869158030/ by http://www.flickr.com/people/kevindoe/, on Flickr

 

This can help for more weight loss.

https://www.rx7club.com/3rd-generation-rx-7-1993-2002-parts-99/odyssey-pc680-mini-battery-box-989740/

 

How is a same weight battery going to save me weight? Lol.

 

I see 15 unneeded Lbs in every pic, but my view of "unneeded" probably differs from yours. ;-)

Riz.

 

Maybe next year I'll take the dive into "racecar" with the door panels and center console. Right now I can't wrap my head around it. Hahah.

 

is that battery setup selfmade or a kit? looks very nice!

 

I made the battery tray for different battery I had in the car. I just recently modified it for use with the Braille battery.

 

Have you thought of carbon fiber hatch? Or shave down the weight of the stock hatch maybe by cutting out the underside (free)?

If you need me to weigh any parts like ABS, heater core, window glass and motor, door speaker assembly, etc... let me know. I pretty much made the jump to track only on my new build and gutted it out.

 

Well excuse me..but I didn't know you already had a smaller battery. I didn't see one in the pictures and I didn't know the weight of the batterys.

 

I'm far from an expert on racing seat brackets, so can you tell me where you got those pictured or, having noted your fabication skills, did you make them? I think they could only be called functionally elegant.

Cheers, Philip

 

IIRC, most of the weight in the hatch is the glass.

I would have replaced my hatch/glass with CF and polycarbonate by now, but it is not legal in my autox class (SSM).

 

https://www.rx7club.com/showthread.p...+weight+carbon

 

No need for a glove box in a track car and you can sell it for 85

air bag wiring/sensors

Ring harness and black fan box control

Misc nuts and bolts that you don't REALLY need

Light weight lug nuts

Light weight wheels and tires. Like SSR comps and Hoosiers

Have you removed the rear antennae, map light and any harnesses you don't need?

Nice roll bar

PS My car is similarly stripped and weighs in at 2650 or lower. Possibly 2625. So you can easily get to 2699

PSS Where did you get those seat rails?

 

Good job on the weight loss! Just out of curiosity how do you like the kirkey intermediate road race seats? I am really interested in putting them in my car.

 

I designed the seat rails, and had them fabricated (laser cutout). I can email anyone the .dwg or .dxf files if interested.


I've only driven the car limited time at this point so I wouldn't feel like I could provide a fair review. I'll report back after I have some seat time at autox.

I have removed the airbag and all associated sensors and wiring. I'm not sure what you are referring to with the ring harness and black fan control box. I removed most of the wiring up front when I did the LS swap years back. I have removed the map light, all the wiring associated with that. The rear antenna is removed (well, modified such that it looks like its there, but there is nothing under the surface of the sheet metal). I certainly need some more ideas on weight up front. Keep them coming! Read above for my reply about seat bracket rails?

 

If you're willing, you can remove the heater core, a/c core, squirrel fan and associated housings, relays and harness. It was an impressive pile of stuff when I pulled it all out! Maybe 30-40lbs...

I'm trimming down my car as well this spring...shooting for 2400lbs...

Guy

 

So it isn't the glass, it is the hatch itself that is heavy.

The Lexan window is only 7 lbs lighter than the stock glass.

 

I'm guessing he still needs it for street use. Hell I still have it myself and I rarely ever drive my car on the street but it's nice when it's cold or wet at the track. Not everyone lives in CA you lucky SOB

 

Yeah...it's not so bad here...however it does rain now and then so I'm installing a 3" in-line bilge blower and routing it to the driver side of the windshield as a de-fogger.

Guy