chinkley

Hello all,

Pretty new to using forums so please let me know if this thread should be removed or edited etc...

What can I do to shed serious weight? Haven't seen anything for a full on race weight reduction build yet.

How can I shed more weight? Cutting panels, replacing body panels etc...


Wanted to see what all the track/race/autocross s2000's are doing for losing weight. Here is my list for weight reduction on my s2000.

• Fully gutted interior
• AEM intake
• Greddy single exit
• header
• test pipe
• mugen hardtop
• os giken diff
• Hasport diff mounts
• Hasport engine mounts
• Sparco ADV TS seat for driver
• Sparco Sprint for passenger
• 5 point harnesses
• removal of seatbelt
• removal of windshield wiper fluid/wipers/reservoir
• A/C delete
• Shaved trunk
• lightweight battery
• lightweight flywheel
• Complete Master ESM Spherical Bearing Kit
• Enkei RPF1 for slicks
• Enkei nto3 for street tire
• Tein SR-C evasive spec
• Spoon subframe collar kit
• NRG quick release 3.0
• Sparco 310 steering wheel
• Real Voltex front bumper
• Removable windows

What would you guys recommend on how to shave more weight?


Here are some photos of the build.
Feel free to follow me on instagram to see the progress/results of the build. @boostedz4m

gptoyz

Well I see why you would want a containment seat, but for the passenger, this is way lighter:
https://www.tillettseatsusa.com/tillett-b4-carbon-seat

Also the J's FX Pro 70 Titanium is way lighter than a test pipe + greddy single exit
Amuse Titanium Header
Screw the quick release if you want to save weight, just do more yoga
Aluminum BBK with 2 piece rotors - I'm thinking Wilwood
lexan windows
Evap Delete
Air pump delete

DavidNJ

Most competitive events (all competitive events) have rules that limit the modifications. Then some events have their own needs. An endurance race may need headlights and longer wearing brakes. Most road racing also takes place in the rain, so the wiper and some sort of interior ventilation are necessary. Racing a closed car on hot days often needs some sort of coolsuit system and forced air helmet ventilation.

There are lots of stiffening parts for available for the S2000. All add weight. Depending on the rules, track, tires/suspension/engine different parts would be necessary. At some power level the differential, half shafts, and transmission need to be replaced.

Performance at speed is affected by aerodynamics. Andrew Brilliant, a popular freelance racing aerodynamicist out of Yokohama, says he can get near prototype levels of downforce (not many Time Attack cars have 2-element rear wings) and that cooling accounts for 1/3 of all drag. Are you planning a full aero setup? A complex splitter and flat bottom add weight.

What are your objectives and constraints?

freq

Serious Weight reduction help

DavidNJ

You know better than that. Trading it in for a Miata or Spec Racer Ford will save a lot of weight. As will going on a 500 cal/day diet.

King Tut

First thing I would do is cut that cage out. That should reduce your weight quite a bit.

No.Division

- Remove the EVAP system
- Cut out the door bars and most the skin in the stock doors besides what is needed to hold the window pinned in.
- Cut out tool trunk area (about 5lbs)
- Vented rear brake like Urge
- AP racing Front brakes
- exhaust stuff already mentioned
- hardtop have glass or lexan rear window?
- down-force front fenders.
- APR mirrors

Thats a short list of bolt on and slight cutting options I can think of in about 2 min.

chinkley

Sorry for the delay, Was out on vacation.

No real constraints. Objective is to compete in Unlimited RWD for GTA. I want to theoretically get the car as light as possible. Eventually will be adding a S/C kit and hope to get it around 500WHP. And when doing so want to loose a lot of weight. (When power comes so will more downforce and a BBK)

chinkley

Cannot cut cage as it will be a requirement for my class in GTA.

chinkley

Hardtop has lexan real window. Ready cut tool part.

Thank you for you help!