Weight Loss Potential Thread - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

Entropy · 08-01-2012, 01:47 AM

I was bored this evening so I put together a weight loss potential list. Some weight losses are exact and some are estimated (erred on the conservative side).

I used this thread for most of the stock weights for comparison. Other weights are from threads on this forum.

I left out most of the miscellaneous <.5lb items.

All weights are total (i.e. wheel weight reduction is all 4 corners, not per-side), and estimated weights have a "~".

Code:

Item____________________________Stock___Aftermarket___Reduction
Battery_________________________29.6____~15___________~15
SRT Header-Back Exhaust_________55.5____38.5__________17
Agency Power Header_____________20.8____12.3__________8.5
RPF1 Wheels w/22lb Tires (4)____41.4____~38___________~12
Spare Tire & Foam (remove)______25.8____0_____________25.8
Tools, Jack, Hook (remove)______5.8_____0_____________5.8
Essex Sprint BBK (AP Racing)____61.6____41.6__________20
Rear Speakers (remove)__________?_______0_____________~5
Front Seats/Brackets____________82.8____~45___________~38
Rear Seats (remove)_____________22.2____0_____________22.2
Owners Manual___________________2.8_____0_____________2.8
Perrin Crank Pulley_____________4.9_____1.2___________3.7
Flywheel (n/a yet!)_____________20.6____~12___________~8.5
CF Driveshaft (n/a yet!)________24.1____13.9__________10.2
Windshield Washer Fluid Bottle__~7______0_____________~7

Captain Snooze · 08-01-2012, 02:28 AM

Windscreen washer fluid. approx 7 pounds.
http://fecompetition.wordpress.com/

JRitt · 08-01-2012, 08:54 AM

Nice post, thanks.

You were definitely a bit conservative on your battery weight loss potential. We were able to knock 25 lbs. off with current lithium-ion technology, while still maintaining 100% daily utility.

Finding that extra 10lbs. elsewhere without impacting usability will probably not be super easy.

TSLRich · 08-01-2012, 08:57 AM

Your calc is off on the wheels... 41-38 is 3, not 12.

ZDan · 08-01-2012, 09:11 AM

3x4=12

7thgear · 08-01-2012, 09:43 AM

do the seats have airbags in them?

if yes, does removing them affect the functionality of the airbag system?

JohnATL · 08-01-2012, 10:00 AM

What are the lowest pulse cranking amps and amps/hour reserve to keep this a daily driver?

Entropy · 08-01-2012, 10:17 AM

Quote:

Originally Posted by Captain Snooze

Windscreen washer fluid. approx 7 pounds.
http://fecompetition.wordpress.com/

Didn't think about that one. That's something that I've removed or hasn't worked on my past cars. Not a problem for DD unless your driving on roads with lots of sand/grit (i.e. snowy roads that have melted!). Thanks!

Quote:

Originally Posted by JRitt

Nice post, thanks.

You were definitely a bit conservative on your battery weight loss potential. We were able to knock 25 lbs. off with current lithium-ion technology, while still maintaining 100% daily utility.

Finding that extra 10lbs. elsewhere without impacting usability will probably not be super easy.

I have seen that battery and it is AMAZING! However, it's very much on the pricey side, which is why I went conservative with the number. Prices should eventually come down, though, like they do for just about all new-tech items

JohnATL · 08-01-2012, 10:26 AM

Braille has a few lightweight batteries for much less. I'm just not sure if they're any good. Anyone have any experience with them?

http://www.braillebattery.com/index....batteries/b106

7thgear · 08-01-2012, 10:30 AM

Quote:

Originally Posted by JohnATL

What are the lowest pulse cranking amps and amps/hour reserve to keep this a daily driver?

that would depend entirely on the climate of where you live.

JohnATL · 08-01-2012, 10:33 AM

Quote:

Originally Posted by 7thgear

that would depend entirely on the climate of where you live.

Between Hot and Stupid Hot.

7thgear · 08-01-2012, 10:37 AM

Quote:

Originally Posted by JohnATL

Between Hot and Stupid Hot.

you can probably get away with just using a lemon and some copper wire

JohnATL · 08-01-2012, 10:42 AM

Quote:

Originally Posted by 7thgear

you can probably get away with just using a lemon and some copper wire

I think I'll try that Braille B106 out. At 6.9lbs and $148 it's worth a shot.

SemperFi · 08-01-2012, 11:36 AM

Taking a dump before getting in the car 5 to 8 lbs.

08-01-2012, 01:47 AM	#1
Entropy Oversteer > Understeer Join Date: Jul 2012 Drives: GT86 Location: PDX Posts: 87 Thanks: 17 Thanked 39 Times in 17 Posts Mentioned: 1 Post(s) Tagged: 0 Thread(s)	Weight Loss Potential Thread I was bored this evening so I put together a weight loss potential list. Some weight losses are exact and some are estimated (erred on the conservative side). I used this thread for most of the stock weights for comparison. Other weights are from threads on this forum. I left out most of the miscellaneous <.5lb items. All weights are total (i.e. wheel weight reduction is all 4 corners, not per-side), and estimated weights have a "~". Code: Item____________________________Stock___Aftermarket___Reduction Battery_________________________29.6____~15___________~15 SRT Header-Back Exhaust_________55.5____38.5__________17 Agency Power Header_____________20.8____12.3__________8.5 RPF1 Wheels w/22lb Tires (4)____41.4____~38___________~12 Spare Tire & Foam (remove)______25.8____0_____________25.8 Tools, Jack, Hook (remove)______5.8_____0_____________5.8 Essex Sprint BBK (AP Racing)____61.6____41.6__________20 Rear Speakers (remove)__________?_______0_____________~5 Front Seats/Brackets____________82.8____~45___________~38 Rear Seats (remove)_____________22.2____0_____________22.2 Owners Manual___________________2.8_____0_____________2.8 Perrin Crank Pulley_____________4.9_____1.2___________3.7 Flywheel (n/a yet!)_____________20.6____~12___________~8.5 CF Driveshaft (n/a yet!)________24.1____13.9__________10.2 Windshield Washer Fluid Bottle__~7______0_____________~7 This list puts us near a 200lb reduction, while still remaining 100% daily driveable. I understand there are some more serious mods for reducing weight, such as stripping the interior or gutting the AC, but for now I'm trying to keep most of the comforts of owning a brand new car. Post up and I'll add to the list when I can! I know there is more un-needed weight that can be lost! Sources: http://www.ft86club.com/forums/showthread.php?t=7881 http://www.ft86club.com/forums/showp...0&postcount=11 http://www.ft86club.com/forums/showp...62&postcount=1 http://www.ft86club.com/forums/showp...63&postcount=7 http://www.ft86club.com/forums/showp...99&postcount=4 http://www.ft86club.com/forums/showp...84&postcount=1 http://www.ft86club.com/forums/showp...97&postcount=2 http://www.ft86club.com/forums/showp...67&postcount=3 http://www.ft86club.com/forums/showp...4&postcount=31 http://www.enkei.com/size_chart/RPF1.pdf http://fecompetition.wordpress.com/ http://www.essexpartsblog.com/news/b...-shaves-10-lbs http://www.ft86club.com/forums/showthread.php?t=18364 Last edited by Entropy; 10-01-2012 at 04:17 PM.

08-01-2012, 08:54 AM	#3
JRitt Join Date: Feb 2012 Drives: 2012 BRZ Premium WRB 6MT Location: Charlotte NC Posts: 689 Thanks: 224 Thanked 1,411 Times in 376 Posts Mentioned: 80 Post(s) Tagged: 3 Thread(s)	Nice post, thanks. You were definitely a bit conservative on your battery weight loss potential. We were able to knock 25 lbs. off with current lithium-ion technology, while still maintaining 100% daily utility. Finding that extra 10lbs. elsewhere without impacting usability will probably not be super easy. __________________ Jeff Ritter\|Mgr.- High Performance Division Exclusive Importer AP Racing and Ferodo Racing www.essexparts.com

08-01-2012, 09:43 AM	#6
7thgear i'm sorry, what? Join Date: Jan 2012 Drives: Canada Location: I rock a beat harder than you can beat it with rocks Posts: 4,399 Thanks: 357 Thanked 2,506 Times in 1,268 Posts Mentioned: 40 Post(s) Tagged: 3 Thread(s)	do the seats have airbags in them? if yes, does removing them affect the functionality of the airbag system? __________________ don't you think if I was wrong, I'd know it?

08-01-2012, 11:36 AM	#14
SemperFi Member Join Date: Jun 2012 Drives: Its a scion....FRS Location: San Jose Posts: 70 Thanks: 3 Thanked 30 Times in 17 Posts Mentioned: 3 Post(s) Tagged: 0 Thread(s)	Taking a dump before getting in the car 5 to 8 lbs. __________________ Born to fight, Trained to kill, Ready to Die, But I never will. Semper Fi. 93 Integra GSR (Sold), 2007 Toyota Fj Cruiser (Sold), 2007 Aston Martin V8 Vantage, 2008 VW R32 (Sold), 2013 Toyota FR-S

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

08-01-2012, 02:28 AM	#2
Captain Snooze Because compromise ® Join Date: Jan 2012 Drives: Red Herring Location: australia Posts: 7,720 Thanks: 3,992 Thanked 9,339 Times in 4,125 Posts Mentioned: 60 Post(s) Tagged: 0 Thread(s)	Windscreen washer fluid. approx 7 pounds. http://fecompetition.wordpress.com/

08-01-2012, 08:57 AM	#4
TSLRich Member Join Date: Jul 2012 Drives: FJ Cruiser Location: NJ Posts: 85 Thanks: 13 Thanked 13 Times in 9 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Your calc is off on the wheels... 41-38 is 3, not 12.

08-01-2012, 09:11 AM	#5
ZDan Senior Member Join Date: May 2011 Drives: '23 BRZ Location: Providence, RI Posts: 4,584 Thanks: 1,376 Thanked 3,890 Times in 2,032 Posts Mentioned: 85 Post(s) Tagged: 0 Thread(s)	3x4=12

08-01-2012, 10:00 AM	#7
JohnATL Senior Member Join Date: Jul 2012 Drives: 2013 Scion FR-S MT Raven Location: Atlanta, GA Posts: 133 Thanks: 26 Thanked 62 Times in 24 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	What are the lowest pulse cranking amps and amps/hour reserve to keep this a daily driver?

08-01-2012, 10:26 AM	#9
JohnATL Senior Member Join Date: Jul 2012 Drives: 2013 Scion FR-S MT Raven Location: Atlanta, GA Posts: 133 Thanks: 26 Thanked 62 Times in 24 Posts Mentioned: 0 Post(s) Tagged: 0 Thread(s)	Braille has a few lightweight batteries for much less. I'm just not sure if they're any good. Anyone have any experience with them? http://www.braillebattery.com/index....batteries/b106

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Official Component Weights & Weight Reduction Thread	JRitt	Tracking / Autocross / HPDE / Drifting	379	04-16-2023 04:15 PM
Official Weight Reduction Thread - Sort of...	merlin2111	Off-Topic Lounge [WARNING: NO POLITICS]	77	10-07-2012 05:09 PM
Potential Group Buys Thread	eleu2166	Australia Classifieds	95	07-25-2012 05:53 AM
Weight loss potential?	SevenTenSplit	Engine, Exhaust, Transmission	10	12-10-2011 02:16 PM
weight loss	cynic	Scion FR-S / Toyota 86 GT86 General Forum	36	10-24-2011 04:04 AM

User Name		Remember Me?
Password