How much did you pay to save weight?
How much did you pay to save weight?
I thought it would be interesting, in light of all of the threads concerning exhaust weights, to find out how much is the cost of saving a pound of weight worth?
I mentioned in a different thread that Seibon sells carbon fiber doors, decks and hoods. They're expensive! To save 1 pound of weight with the doors and deck would cost $55 at slightly discounted prices. Comparing an $800 exhaust system to a $250 ebay exhaust system will save 12-15 lbs. So that means that 800-250=$550 extra dollars spent for the weight savings. That's about (550/15=$36.67 per pound of savings. Obviously that's a better buy if you're saving weight, than the Seibon doors and deck. How about seats. To buy cf seats costs about 1100 for NG seats. Since I understand that stock IX seats weigh about 43 lbs (not sure about that) and the NG seats weigh about 15 (w/brackets) thats 28lbs saved at a cost of $550 each. Or, in other words, $19.64 per pound saved. What did you buy for the purpose of weight savings and how much did it cost. Wheels are expensive to save 5-8 pounds. Curious if we can come up with a 'WHAT IS IT WORTH TO SAVE WEIGHT' thread.
Basically Free:
Zip-ties can be had for a couple of dollars per pack of 100
remove all the stuff in the trunk 37 lb
remove floor mats 4 lbs
remove back seats 10 lbs for the bench 15 more for the back. (unverified)
remove rear seat belts 2 lbs. (Rear Safety compromised)
remove spark plug cover .5 lbs, antenna .5 lbs.
Rear fuel tank evaporator 8.5 lbs (courtesy Buschur Racing)
Rear bumper support 17 lbs (BR) (Safety Compromised)
Interior carpet padding 17.5 lbs (BR)
Air Conditioner system 29.6 lbs (BR)
Front Impact Bar 13 lbs (safety compromised)
Description:............................cost/lb saved.......................Saved weight vs Stock
Carbon Fiber Doors......................$55.00................. .................70 lbs
Carbon Fiber Deck........................$55.00................ ..................10 lbs
Buschur 3" Exhaust......................$22.29............... ...................37 lbs
AMS 3" exhaust.............................$33.33........ .........................27 lbs
NRG CF seats................................$28.20....... ...........................39 lbs
SSR comps 17x9............................$67.00............ ......................24 lbs rotating unsprung mass
mini battery kit/tray.........................$7.50................ ..................20 lbs
Universal Battery .............................$2.30................ ..................19.8 lbs (may need further load testing, tested w/stock loads)
Buschur Intake (most vendors)......$60.97.............................. .....4.1 lbs
Hollow rear sway bar......................$66.67................... ...............3 lbs
Apexi N1..........................................$28.85 ..................................39 lbs(stock 64 lbs)
Giro Rotors......................................$60.41 ..................................24 lbs (need multiple weights and costs)
Aluminum roof.................................$83.16....... .............................6 lbs (27lbs stock vs. 21 lbs at $499)
Baer Front Rotors.............................$50.00......... .........................14 lbs (Cost @ $700) 15.2 lbs stock vs 22 lbs per side
JIC struts........................................$138 .00..................................13 lbs (Cost @ 1800) 64.6 lbs stock vs 51.6 lbs total
JIC front strut - 14lb 14oz
JIC total weight - 51lb 8.8oz
JIC rear strut - 10lb 14.4oz
Exedy Twin Clutch............................$772.72......... .........................2.2 lbs rotating @ $1700 cost
Tilton Carbon/Carbon.......................$285.71.............. ....................16.2 lbs rotating @ $4000 cost
stock clutch and flywheel = 30lb 8.6oz
stock flywheel alone = 14lb 2.6oz
act prolite flywheel = 10.1lb
Weights Only without regard to the $savings:
28 lbs rotating
Twin Cerametallic Clutches.......................................... ...............21.7 lbs rotating(Brand needed)
Tilton Carbon/Carbon............................................ .....................16.2 lbs rotating
Stock Clutch/Flywheel.......................................... ......................30.5 lbs rotating
stock clutch and flywheel = 30lb 8.6oz
stock flywheel alone = 14lb 2.6oz
act prolite flywheel = 10.1lb cost?
I mentioned in a different thread that Seibon sells carbon fiber doors, decks and hoods. They're expensive! To save 1 pound of weight with the doors and deck would cost $55 at slightly discounted prices. Comparing an $800 exhaust system to a $250 ebay exhaust system will save 12-15 lbs. So that means that 800-250=$550 extra dollars spent for the weight savings. That's about (550/15=$36.67 per pound of savings. Obviously that's a better buy if you're saving weight, than the Seibon doors and deck. How about seats. To buy cf seats costs about 1100 for NG seats. Since I understand that stock IX seats weigh about 43 lbs (not sure about that) and the NG seats weigh about 15 (w/brackets) thats 28lbs saved at a cost of $550 each. Or, in other words, $19.64 per pound saved. What did you buy for the purpose of weight savings and how much did it cost. Wheels are expensive to save 5-8 pounds. Curious if we can come up with a 'WHAT IS IT WORTH TO SAVE WEIGHT' thread.
Basically Free:
Zip-ties can be had for a couple of dollars per pack of 100
remove all the stuff in the trunk 37 lb
remove floor mats 4 lbs
remove back seats 10 lbs for the bench 15 more for the back. (unverified)
remove rear seat belts 2 lbs. (Rear Safety compromised)
remove spark plug cover .5 lbs, antenna .5 lbs.
Rear fuel tank evaporator 8.5 lbs (courtesy Buschur Racing)
Rear bumper support 17 lbs (BR) (Safety Compromised)
Interior carpet padding 17.5 lbs (BR)
Air Conditioner system 29.6 lbs (BR)
Front Impact Bar 13 lbs (safety compromised)
Description:............................cost/lb saved.......................Saved weight vs Stock
Carbon Fiber Doors......................$55.00................. .................70 lbs
Carbon Fiber Deck........................$55.00................ ..................10 lbs
Buschur 3" Exhaust......................$22.29............... ...................37 lbs
AMS 3" exhaust.............................$33.33........ .........................27 lbs
NRG CF seats................................$28.20....... ...........................39 lbs
SSR comps 17x9............................$67.00............ ......................24 lbs rotating unsprung mass
mini battery kit/tray.........................$7.50................ ..................20 lbs
Universal Battery .............................$2.30................ ..................19.8 lbs (may need further load testing, tested w/stock loads)
Buschur Intake (most vendors)......$60.97.............................. .....4.1 lbs
Hollow rear sway bar......................$66.67................... ...............3 lbs
Apexi N1..........................................$28.85 ..................................39 lbs(stock 64 lbs)
Giro Rotors......................................$60.41 ..................................24 lbs (need multiple weights and costs)
Aluminum roof.................................$83.16....... .............................6 lbs (27lbs stock vs. 21 lbs at $499)
Baer Front Rotors.............................$50.00......... .........................14 lbs (Cost @ $700) 15.2 lbs stock vs 22 lbs per side
JIC struts........................................$138 .00..................................13 lbs (Cost @ 1800) 64.6 lbs stock vs 51.6 lbs total
JIC front strut - 14lb 14oz
JIC total weight - 51lb 8.8oz
JIC rear strut - 10lb 14.4oz
Exedy Twin Clutch............................$772.72......... .........................2.2 lbs rotating @ $1700 cost
Tilton Carbon/Carbon.......................$285.71.............. ....................16.2 lbs rotating @ $4000 cost
stock clutch and flywheel = 30lb 8.6oz
stock flywheel alone = 14lb 2.6oz
act prolite flywheel = 10.1lb
Weights Only without regard to the $savings:
28 lbs rotating
Twin Cerametallic Clutches.......................................... ...............21.7 lbs rotating(Brand needed)
Tilton Carbon/Carbon............................................ .....................16.2 lbs rotating
Stock Clutch/Flywheel.......................................... ......................30.5 lbs rotating
stock clutch and flywheel = 30lb 8.6oz
stock flywheel alone = 14lb 2.6oz
act prolite flywheel = 10.1lb cost?
Last edited by 9sec9; Feb 15, 2007 at 08:29 PM.
Question is, how much did you pay, just to save weight, How much was it and how much did it save. With that info, we can come up with an average cost per pound saved. By scaling the list, we can have a cheapest to highest cost per pound of weight saved. Thought it would be helpful for those on budgets trying to figure which change should be next for the 'Best bang for the buck'.
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"Seriously, what was the point of your post? Do you think that horsepower and R/T are all that people use to become quick? If that was the case, then why does almost every pro racer have a stripped down car? I wonder if Curt Brown or John Shepherd think that weight savings got them to where they are today? Every bit counts, and unless you're one of the guys with a huge corporate sponsorship, you've got to justify how you spend your money. I don't think that anyone would want to close a thread that listed how much horsepower you gain for each mod (rough example: $20 per HP for an exhaust, but $50 per HP for a turbo kit).
To add my "weight savings" costs to this thread...
Zip-ties can be had for a couple of dollars per pack of 100.
They weigh virtually nothing.
Metal bolts can be heavy.
When bolts are removed, they leave holes that can usually be filled by the zip-ties.
Zip-ties can be had for a couple of dollars per pack of 100.
They weigh virtually nothing.
Metal bolts can be heavy.
When bolts are removed, they leave holes that can usually be filled by the zip-ties.
baer disks:
front stock - 22lb each
front baer - 15lb each
14 pound savings for 700 dollars: 50dollars/lb but thats rotating unsprung mass, not sprung mass like everything else mentioned.
SSR comps in 17x9
stock evo 8 wheels - 21 pounds
SSR - 15ish
6x4 = 24 lb savings for 1600ish = 67 dollars/lb again rotating unsprung mass
mini battery
20 lb savings 150 dollars tops = 7.5 dollars/lb
front stock - 22lb each
front baer - 15lb each
14 pound savings for 700 dollars: 50dollars/lb but thats rotating unsprung mass, not sprung mass like everything else mentioned.
SSR comps in 17x9
stock evo 8 wheels - 21 pounds
SSR - 15ish
6x4 = 24 lb savings for 1600ish = 67 dollars/lb again rotating unsprung mass
mini battery
20 lb savings 150 dollars tops = 7.5 dollars/lb
Last edited by KevinD; Feb 7, 2007 at 08:25 AM.
baer disks:
front stock - 22lb each
front baer - 15lb each
14 pound savings for 700 dollars: 50dollars/lb but thats rotating unsprung mass, not sprung mass like everything else mentioned.
SSR comps in 17x9
stock evo 8 wheels - 21 pounds
SSR - 15ish
6x4 = 24 lb savings for 1600ish = 67 dollars/lb again rotating unsprung mass
front stock - 22lb each
front baer - 15lb each
14 pound savings for 700 dollars: 50dollars/lb but thats rotating unsprung mass, not sprung mass like everything else mentioned.
SSR comps in 17x9
stock evo 8 wheels - 21 pounds
SSR - 15ish
6x4 = 24 lb savings for 1600ish = 67 dollars/lb again rotating unsprung mass