1. Join the Community!

    DSMtuners is a massive archive of DSM information - but more importantly, it's a COMMUNITY! Join in and participate with other DSMers, and invite all of your DSM friends to make this place their home. Chat with others, create a build thread, post questions and answers. Get involved! Logging in will also remove many of the advertisements, along with this notice. ;)

Weight Reduction.

Posted by isaiddurazoo, Jul 11, 2012

Please Support Southbay Fuel Injectors
Please Support Feal Suspension
  1. isaiddurazoo

    isaiddurazoo Proven Member

    Joined Dec 14, 2011
    Tucson, Arizona
    Anyone in here have any experience with removing the carpets and road noise? I'm not exactly sure how much these cars weigh, I drive a 98 gst spyder. I do know that its too heavy and I don't like the understeer.

    I will be stripping the trunk, extra donut tire, plastics, that awfully placed reservoir. Any other suggestions? I know I could buy carbon fiber parts etc but personally I'm not a big fan of them.

    My goal is to run anything below a 13.5 with a stock turbo pushing 14psi. So how significant is the amount of weight I would have to lose? And by curiousity does anyone on here know the amount of g-force this car produces? And or have diagrams for downforce?
  2. Dylan0123

    Dylan0123 Proven Member

    Joined Dec 1, 2010
    a, Illinois
  3. Mike02rt

    Mike02rt Proven Member

    Joined Mar 5, 2010
    Chicago, Illinois
    Losing the carpet and interior hatch area plastic trim will net very little weight loss [maybe 10-15lbs] and a significant increase in road noise/ exhaust drone. Not worth it imho for a street driven daily driver (plus it looks kinda stupid on a close to stock performing car).
    Also, bad choice on losing the spare unless you have a friend with you or some other backup for emergency situations.
    Your best bet is to ditch the stock turbo and upgrade to even a 14b or 16g (with other supporting goodies). That, along with some seat time at the track will do you more good than the weight loss route (it's an expensive and long route).
  4. isaiddurazoo

    isaiddurazoo Proven Member

    Joined Dec 14, 2011
    Tucson, Arizona
    Thank you, great help.

    I have an aftermarket air intake, greddy bov, 550cc fuel injectors, bigger front-mount intercooler. The goal is to keep the stock turbo. I would enjoy the cfm as much as they next guy but I like to drive down mountains often and enjoy my turbo spooling at lower RPM, thanks for the suggestions.

    The spare tire serves me no good, my car is low and i believe it will just rub. Worst comes to worst I'll make my girlfriend bring me one or something.

    As far as the carpets go I'll take your word for it, I was under the impression that they weighed in at more than that.
  5. AngelOfPassion

    AngelOfPassion Proven Member

    Joined Jul 5, 2011
    Mesa, Arizona
    Just so you know here is a preview of what it will look like after what you describe...

    It's not THAT much louder but it is noticable. And to really lose the most weight you want to take out the antenae motor and the rear wiper resevoir as well as the tire and jack and all that stuff. That is what weighs the most. If weight is the biggest concern then that is what I would remove.

    Here is a link to some pics of mine: http://www.dsmtuners.com/forums/hangout/437225-so-my-plan-take-out-back-seat.html

    Oh and be prepared to clean back there for about an hour. Mine was utterly disgusting under all the panels, seats and carpet...

    585  0

    1997 Mitsubishi Eclipse GSX
    manual · 2G DSM
  6. iugrad92turbo

    iugrad92turbo Supporting Member

    Joined May 22, 2007
    Kalamazoo, Michigan
    Anything you dont want or need speaker brackets fluid containers extra stuff, sound deadening i took all mine out and some things i dont need.

    7K  5

    1992 Eagle Talon TSi
    awd · manual · 1G DSM
  7. MakeItHappen

    MakeItHappen Proven Member

    Joined Jul 2, 2012
    Erie, Pennsylvania
    buy lighter wheels, and remember alluminum and steel are heavier than rubber
    you may love big rims and skinny tires but light weight 14-maybe16" rims are lighter,
    if you have money carbon fiber hood and hatch and put in that specific glass for the rear window
  8. H@xtGSX

    [email protected] Proven Member

    Joined Aug 9, 2011
    Carlsbad, New Mexico
    ...Lexan and CF? $$$ Cha-ching! $$$

    Hope you have deep pockets or know how to to fiberglass... I do fiberglass work myself, and I still can't afford to even make a CF hood and hatch. Just the material alone is extremely expensive. Fiberglass may not look as cool, but it is lighter, and a lot cheaper. That's where I would start. Besides, most "Carbon fiber" hoods are fiberglass covered with a single layer of CF cloth anyhow. Not worth the extra $300 in my opinion.

    878  0

    1995 Mitsubishi Eclipse GSX
    · 2G DSM
  9. 3kgt2nv

    3kgt2nv Proven Member

    Joined Jan 7, 2011
    poughkeepsie, New York
    he has a spyder so no lexan and cf. personally i would leave the carpet and sound deadened in the car. if your that desperate to run a certain time run more than 14psi or boost. gutting a car your going to daily drive is silly and makes the car look like ass. all the interior plastics,carpet, sound deadner, speakers and trunk plastic might save you 30-45 pounds. 1 psi of boost will off set the weight savings.
  10. H@xtGSX

    [email protected] Proven Member

    Joined Aug 9, 2011
    Carlsbad, New Mexico
    I agree... Just make a little more power. I have a friend that gutted a 240SX for weight, and it is his DD. It looked dumb as hell and no one wanted to ride in it. He wound up putting most of the interior back in because he was tired of the jokes and it was just plain uncomfortable. That's a lot of work to just go back to what you had in the first place. The furthest I personally would go on the interior would be removal of the rear seat and the unecessary brackets, plus the rear washer tank. I would carpet over and put dynomat over the rear seat area though. It is a LOT noisier if that area is bare metal. In a Spyder though, I don't think you can go too crazy removing things without it looking really messed up. I think you'd need the rear seat to prevent turning your trunk into a big metal parachute too.

    878  0

    1995 Mitsubishi Eclipse GSX
    · 2G DSM
  11. DsMWookie

    DsMWookie Proven Member

    Joined May 3, 2004
    Birmingham, Alabama
    Dropping 100lbs. Is negligible when measured against the underwhelming use of per potential you already have. Plenty of small BBQ turbos exist that make great power and spool.

    382  0

    1990 Eagle Talon TSi AWD
    manual · 1G DSM
  12. NathanCarlK

    NathanCarlK Proven Member

    Joined May 17, 2012
    Ulysses, Pennsylvania
    Take the spare out of the back and all the parts that go with it. Thats a pretty good start. Not very good if you get a flat. : / I'm working on the same thing as you are. I got a carbon fiber hood to help, but I'm not willing to tear out the inside to cut weight. Its a pretty tough spot.

    365  0

    1998 Mitsubishi Eclipse Spyder GST
    · 2G DSM
  13. unplugged

    unplugged Proven Member

    Joined Apr 16, 2012
    Central, New Jersey
    Removing carpet and dampening will make the car louder. This is the trade-off of being light weight.
  14. Riceburning101

    Riceburning101 Proven Member

    Joined Jan 2, 2012
    Fort Wayne, Indiana
    Get manual seats if you have power ones, rim n tire combos can gain easy hp. Big brake kits plus big rims equals more mass to move and rotate

    487  0

    1997 Mitsubishi Eclipse GST
    manual · 2G DSM
  15. DSM Vice

    DSM Vice Probationary Member

    Joined Jul 7, 2012
    U'Ville, Connecticut
    You mentioned understeer. Keep in mind that nothing you mentioned is going to help your understeer; in fact, nearly everything you mentioned is taking weight out of the back half of the car and will therefore increase it.

    13.5 is pretty conservative - I wouldn't gut the car at this number, especially if you daily it.

    This would be my suggestion to make the car substantially more "spirited" without breaking the bank and keeping it drivable:
    -Ported 14B. I run one in my car - really doesn't spool much slower than the T25 from what I recall but pulls WAY harder and can be had for dirt cheap. Plus it is a pretty simple swap.
    -Mo' boost. ~18psi.
    -Rear sway bar.

    That should do it. If you want to improve things further you can do a CF hood, move the battery to the trunk, or coil-overs, but these are going to be more costly and/or affect the usability of the car.
  16. isaiddurazoo

    isaiddurazoo Proven Member

    Joined Dec 14, 2011
    Tucson, Arizona
    Thank you all for your suggestions, I'll take them all into consideration. Just in case any of you are wondering what I will probably do is still remove the tire out of the back and and gut the trunk. I can't see it anyhow and the plastics bug the crap out of me constantly. As far as the rug I'm definitely keeping it. I'm getting a check from college soon so I'll probably be investing it into a 14b turbo.
  17. WES_393

    WES_393 DSM Wiseman

    Joined Jun 6, 2011
    Colo Spgs, Colorado
    Just my 2 cents- skip the 14b idea and find a small 16g. The spool is right there with a 14b yet you could still make over 300hp. The price isn't too far ahead either and install is exactly the same.
  18. isaiddurazoo

    isaiddurazoo Proven Member

    Joined Dec 14, 2011
    Tucson, Arizona
    Will do.
  19. 94allwheeldsm

    94allwheeldsm Proven Member

    Joined Jul 31, 2011
    Roaring Spring, Pennsylvania
    If your out to beat everybody on the streets everything counts! I have a DD that I haul my kids in every once in a while and it's completely gutted. it's a lot of work but totally worth it. 20 lbs may be the difference! If you want the win then dedication is key! DSM FTW!

    Street Build 1K  0

    1994 Eagle Talon TSi AWD
    automatic · 1G DSM
  20. DSM Vice

    DSM Vice Probationary Member

    Joined Jul 7, 2012
    U'Ville, Connecticut
    It depends on what your goals are. I doubt he picked up a Spyder to "beat everyone on the streets".

    Curios - how do you haul your kids in a completely gutted car? Still have the rear seats?
  21. greybush

    greybush Probationary Member

    Joined Jun 10, 2012
    colver, Pennsylvania
    I just got my second 1G and the back was gutted, the guy planned on just running the track. For my part, the crazy excess noise for me using this as a pleasure ride doesn't justify the poundage lost. So the interior is getting worked back in. Of course, I'm old and getting grey hair and just want me and the lil woman to go out and relive some of our youth.

    But if I was 21 again with my first DSM, Ya I would take out everything I could to just to eeek out a win :)
  22. Mishimoto

    Mishimoto Proven Member

    Joined Jul 6, 2010
    Wilmington, Delaware
    I agree, a gutted interior typically equals a lot of road noise. Does it save weight, yes. Would I want this done to my daily driver...probably not.

    But in the end it is up to the OP, let us know what you decide.:rocks:
  23. goldeninja20

    goldeninja20 Proven Member

    Joined Dec 5, 2010
    Norton, Massachusetts
    In my opinion your are better off trying to lose 10 lbs of body fat and keeping everything in your car. I don't think you are losing enough weight on the car to make it worth it. Just dont eat a burger before you race and youll win :thumb:

    771  0

    1997 Mitsubishi Eclipse GST
    · 2G DSM
  24. rEclipserGST

    rEclipserGST Supporting Member

    Joined Nov 17, 2007
    Columbus, Ohio
    I have removed the following:

    Cruise Control
    Replaced OEM battery with Honda Half size battery
    Battery tray & bracket
    Replaced OEM hood with CF hood
    Front & Rear Bumper Crash Beams
    Misc. brackets & bolts (insert pic)
    Glove Box steel plate (insert pic)
    Spare tire & jack
    Passenger side Airbag

    If you look at my gallery, most of that you wouldn't have guessed. It makes a difference. I would say anywhere from 150 to 200 lbs can be saved.

    I still have functioning A/C, but I believe my heater core is clogged. So I blocked it off.

    Attached Files:

    Street Build 926  25

    1995 Eagle Talon TSi AWD
    187 whp · 200 lb/ft · 2G DSM

Share This Page

Support Vendors who Support the DSM Community
ECM Tuning ExtremePSI Feal Suspension Fuel Injector Clinic Jacks Transmissions JNZ Tuning Kiggly Racing Morrison Fabrications OHM Racing RixRacing RockAuto SouthBay Fuel Injectors STM Tuned Track Decals Track Sculptures VR Speed Factory