Weight Reduction Specifics

[FaYgOkRiS]

Im running out of things to do to pull wieght from my car and its a prob cuz I keep having to add more to mine. (Roll Cage)

 

[IronTerp]

If you ever get a chance to accurately weight the 04 chrome rims alone I would be thankful. I have seen a pretty good variance in the reported weights of the 17X9 chrome rim.

Yeah, I weighed two of them w/ 50% worn F1's and they both came out to 49.8 lbs. I have an unmounted F1 that I can weigh, but the often posted weight of the OEM chromies is 26 lbs.

I just bought a new rear seat delete kit from MMR that I need to weigh......But shipping weight said 11 lbs :nono: Too much.....May have to run the "cardboard" kit at the track.

 

[Almo]

I just bought a new rear seat delete kit from MMR that I need to weigh......But shipping weight said 11 lbs :nono: Too much.....May have to run the "cardboard" kit at the track.

You're getting as bad as I am... :beer:

 

[F8LSNAKE]

Hey F8L, how much is the airbag delete worth?

If I remember correctly it was about 15lbs. The new steering wheel I used was a couple pounds lighter too.

 

[CobraBob]

Like Dwight (IronTerp) said, weight reduction isn't for everyone, but the weekend warriors most certainly are concerned on average with removing any weight possible. Most who race and use their Cobras daily would probably want to find a good balance between weight reduction and daily comfort. JMO.

 

[F8LSNAKE]

Like Dwight (IronTerp) said, weight reduction isn't for everyone, but the weekend warriors most certainly are concerned on average with removing any weight possible. Most who race and use their Cobras daily would probably want to find a good balance between weight reduction and daily comfort. JMO.

That's what I've done. Some weight reduction without sacrificing to much comfort. I wish I had 2 so I could gut the crap out of one and keep the other nice. No compromising that way.

 

[CobraBob]

I hear ya. And.....your wife/girlfriend might not appreciate sitting on the floor board. LOL!

 

[Almo]

I hear ya. And.....your wife/girlfriend might not appreciate sitting on the floor board. LOL!

BYOC "Bring your own cushion" :lol:

 

[F8LSNAKE]

I hear ya. And.....your wife/girlfriend might not appreciate sitting on the floor board. LOL!

Luckily for me she's very understanding, but yeah, I don't think she would like sitting on the floorboard. She doesn't mind the corbeau forza II's too much though.

 

[firemanmike]

.

 

[plan b]

Here is an example. I reduced front rotating mass almost 13.5# for the GT500 with these rotors:

Rotors have aluminum hats. The weight savings for the 13" SN-95 2-pc rotors are not quite as much as these unfortunately. You can do it on the rears as well:

Front SN-95 14" 2-pc rotor on left and SN-95 rear 2-pc rotor on the right.

FWIW

:thumbsup: :coolman: :beer:

Are they TCE rotors?

 

[ac427cobra]

Are they TCE rotors?

No. These are mfg. by Coleman Racing.

And they are also for sale here:

http://www.svtperformance.com/forums/showthread.php?t=398222

The second photo is a Brembo on the left and a Coleman again on the right.

:thumbsup: :coolman: :beer:

 

[ugotbit03]

Here are some more fun wieghts concerning rotaing mass...

Stock wheels with stock tires17in 10th anniv = 48.0 lbs ea

Stock wheels 10th anniv with ET Street = 45.0 lbs ea

18x9 FR-500 with 275/35/18 NT-555 = 55.5 lbs ea

18x10 FR-500 with 305/35/18 NT-555R DR = 56.0 lbs ea

Courtesy of IWRBB on Modfords

BBS RK 18x8.5, KDW 245/45/18 - 46.94 Lbs
BBS RK 18x10 KDW 295/35/18 - 50.30 Lbs
17x10.5 Rim and MT 315/35/17 - 61.12 Lbs

Replica 17x9 03 Cobra Rim - 26.86 Lbs
Replica 17x10.5 03 Cobra Rim - 28.80 Lbs
MT Drag Radial 315/35/17 - 32.28 Lbs
BFG Drag Radial Tire 315/35/18 - 30.02 Lbs

 

[SIr RicCuS]

Cobra Diet
-----------

I've been looking for this thread forever!!! I finally found it!!! :rockon:

I'm doing a bunch of weight reduction to my Cobra and I wanted to share and get ideas of what else I can do...

Street Driving
--------------
8.8 Solid Swap [-85.0 lbs.]
Maximum Motorsporst Coilovers [Front] [?]
Eibach Coilovers [Rear] [?]
Mott Bar [-7.8 lbs.]
MAC Long Tube Headers With The Off Road Prochamber [-10.0 lbs.]
PSR Tubular K-Member [-69.0 lbs.]
PSR Tubular A-Arms [-4.5 lbs.]
Spare Tire [-26.4 lbs.]
Jack/Crow Bar [-6.6 lbs.]
Trunk Pad [-6.0 lbs.]
Microsuede Corbeau TRS Seats [Driver] [-27.3 lbs.]
Microsuede Corbeau TRS Seats [Passenger] [-18.5 lbs.]
Rear Seat Delete [-38.2 lbs.]

Total [-299.3 lbs.]

Drag Strip
----------
Greg Weld Design Drag Star's [Rear] [-18.4 lbs.]
Greg Weld Design Drag Star Skinnies [Front] [-26.0 lbs.]
Rear Seat Delete Removed [-4.0 lbs.]
Passenger Seat Removed [-27.0 lbs.]
Front Sway Bar/Brackets Removed [-12.4 lbs.]

Grand Total [-387.1 lbs.]


This is another thread with some great info on it! :rockon:

http://forums.corral.net/forums/showthread.php?t=166177&highlight=official+weight

What do you guys think? Is there anything else that I can do? :rolling:

 

[Rick James]

I'm sure Dwight (Iron Terp) will chime in again on this as he has done some more weight reduction since he last updated this thread.....

 

[CobraBob]

Or just contact Dwight by PM. He is a bit of a weight wizard and can probably give you the advice you're looking for.

 

[AaronK]

What's the difference?:shrug:

+1... The car is still moving that much more weight down the track... What does sprung and unsprung have to do with it??? :dw:

 

[IronTerp]

Very nice list SIr RicCuS! The only thing I would suggest is possibly a light weight battery. Getting a respectable 60' time will really help reduce ET and improving your Terminator's ability to transfer weight from front to back is a huge help here. Light weight battery, front skinny setup, and removal of front sway bar, in conjunction with properly adjusted struts and shocks, can do wonders.

Here's my 08' setup which puts me at a race weight of 3,652 lbs.

03/04' WEIGHT REDUCTION
Spare tire...................................-26.4 lbs
Jack/crow bar..............................-6.6 lbs
Trunk pad...................................-6.0 lbs!
Mott bar (under diff).....................-7.8 lbs
Front sway bar/brackets................-12.4 lbs
Rear seat bottom.........................-11.0 lbs
Rear seat back.............................-25.6 lbs
Rear seat head rest.......................-5.6 lbs
MAC LT's w/ OR Prochamber...........-10.0 lbs (stock mid pipe/manifolds=52.8, MAC LT's/Prochamber =42.8)
Odyssey battery/bracket................-22.2 lbs (stocker=37.6, Odyssey=15.4)
Front 15x3.5" Bogarts/ET Front........-53.2 lbs (OEM Chrome w/ F1's=49.8 each, Skinny setup=23.2 each)
Rear 16x10" Bogarts/Hoosier FS.......-26.8 lbs (OEM Chrome w/ F1's=49.8 each, Rear setup=36.4 each)
UPR K member kit..........................-65.0 lbs
Front Passenger Seat......................-43.0 lbs

Total......................................-321.6 lbs!!!

 

[SIr RicCuS]

Very nice list SIr RicCuS! The only thing I would suggest is possibly a light weight battery. Getting a respectable 60' time will really help reduce ET and improving your Terminator's ability to transfer weight from front to back is a huge help here. Light weight battery, front skinny setup, and removal of front sway bar, in conjunction with properly adjusted struts and shocks, can do wonders.

Here's my 08' setup which puts me at a race weight of 3,652 lbs.

03/04' WEIGHT REDUCTION
Spare tire...................................-26.4 lbs
Jack/crow bar..............................-6.6 lbs
Trunk pad...................................-6.0 lbs!
Mott bar (under diff).....................-7.8 lbs
Front sway bar/brackets................-12.4 lbs
Rear seat bottom.........................-11.0 lbs
Rear seat back.............................-25.6 lbs
Rear seat head rest.......................-5.6 lbs
MAC LT's w/ OR Prochamber...........-10.0 lbs (stock mid pipe/manifolds=52.8, MAC LT's/Prochamber =42.8)
Odyssey battery/bracket................-22.2 lbs (stocker=37.6, Odyssey=15.4)
Front 15x3.5" Bogarts/ET Front........-53.2 lbs (OEM Chrome w/ F1's=49.8 each, Skinny setup=23.2 each)
Rear 16x10" Bogarts/Hoosier FS.......-26.8 lbs (OEM Chrome w/ F1's=49.8 each, Rear setup=36.4 each)
UPR K member kit..........................-65.0 lbs
Front Passenger Seat......................-43.0 lbs

Total......................................-321.6 lbs!!!

That's great! I actually already ordered my set of MAC Long Tube Headers with the Off Road Prochamber! That's a hell of a coincidence! I'm getting a hell of a deal on them too. $500 for them both brand new; and they're the better ones as well.

What kind of light weight battery? Do you think that a battery relocation kit with the existing battery (Bosch) would be sufficient for weight transfer?

Any any idea of how much the coilover's weigh opposed to the stock setup?

Thanks! :beer:

EDIT: I've updated my initial post with the LT's/Prochamber exhaust setup.

 

[IronTerp]

Battery relocation to the trunk does not help with weight savings, but the improved weight transfer affect is probably even more beneficial than the weight loss, especially with a solid rear axle.

I use the Odyssey PC680 and the MACA recently did a group buy for 10 of these and got a heckuva nice discount.

http://www.portablepower.com/items/batteries/SLA/1/Hawker Odyssey/PC680/0769-2016/SL105/37L105S5

The UPR K member kit with tubular A arms and coilovers will save you 65 lbs off of the front end. I'm not excatly sure of the coilover wight loss specifically as most folks do the whole kit.

Great deal on the headers!!! They weigh a bit more than the stock manifolds, but this is a mod I feel VERY strongly about, even with Eaton power!