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> Carbon Fiber weight reductions, is it worth it?
post Jul 4, 2007 - 4:46 PM
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dutchboy

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How much do each of the OEM style CF hood and hatch from Seibon / Vis shave from the weight of the car?

Are hood pins required for the hoods(has OEM style hood latch).

Be sure not to count the glass in weight measurements.


Just wondering if it is worth the cost of the parts.

Thanks!
 
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post Jan 15, 2008 - 10:28 AM
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playr158



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QUOTE(BloodyStupidDavey @ Dec 22, 2007 - 1:41 PM) [snapback]625040[/snapback]

Back from the dead. I had an opportunity to weigh the various hoods today. Here are my findings:


Stock ST/GT steel hood, without fiberglass lining: 39lbs (17.7kg) approx.
Stock GT4 aluminium hood, with fiberglass lining: 25lbs (11.3kg) approx.
C-One carbon fiber GT4 style hood: 13 lbs (5.9kg) approx.



QUOTE(95st-celica @ Jan 15, 2008 - 10:08 AM) [snapback]630932[/snapback]

i think that if your going for weight...and you want to take your car to an auto cross track for the day...just gut the interior...back seat and pass side seat is a LOT of weight right there that you would be getting rid of...also the spare tire, jack, stupid $hit likee that...no offense but a carbon fiber hood and hatch is not going to give you the results you want....maybe for peace of mind but thats about it....sure every little bit helps but when it comes to a difference of 5-10 pounds? come on now.....might as well drive with no hood tongue.gif


requoted just incase you can't read/do math

39-13 = 26lbs

26lbs is a substantial amount of weight..
26lbs = spare tire+jack
26lbs = about 1 front seat
and thats just in a hood.

5-10lbs can be pretty important.
removing upper weight (IE sunroof, hood, hatch) shifts the weight balance of the car to a LOWER point (thus giving lower center of gravity).
the more "upper" weight you can remove the better your car can handle.

For the average street driver here will it make a big difference, no not really. When it comes down to the logistics of it, YES it makes a nice difference.

This post has been edited by playr158: Jan 15, 2008 - 10:31 AM
post Jan 15, 2008 - 12:46 PM
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95st-celica



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QUOTE(playr158 @ Jan 15, 2008 - 10:28 AM) [snapback]630936[/snapback]

QUOTE(BloodyStupidDavey @ Dec 22, 2007 - 1:41 PM) [snapback]625040[/snapback]

Back from the dead. I had an opportunity to weigh the various hoods today. Here are my findings:


Stock ST/GT steel hood, without fiberglass lining: 39lbs (17.7kg) approx.
Stock GT4 aluminium hood, with fiberglass lining: 25lbs (11.3kg) approx.
C-One carbon fiber GT4 style hood: 13 lbs (5.9kg) approx.



QUOTE(95st-celica @ Jan 15, 2008 - 10:08 AM) [snapback]630932[/snapback]

i think that if your going for weight...and you want to take your car to an auto cross track for the day...just gut the interior...back seat and pass side seat is a LOT of weight right there that you would be getting rid of...also the spare tire, jack, stupid $hit likee that...no offense but a carbon fiber hood and hatch is not going to give you the results you want....maybe for peace of mind but thats about it....sure every little bit helps but when it comes to a difference of 5-10 pounds? come on now.....might as well drive with no hood tongue.gif


requoted just incase you can't read/do math

39-13 = 26lbs

26lbs is a substantial amount of weight..
26lbs = spare tire+jack
26lbs = about 1 front seat
and thats just in a hood.

5-10lbs can be pretty important.
removing upper weight (IE sunroof, hood, hatch) shifts the weight balance of the car to a LOWER point (thus giving lower center of gravity).
the more "upper" weight you can remove the better your car can handle.

For the average street driver here will it make a big difference, no not really. When it comes down to the logistics of it, YES it makes a nice difference.

since were so good at math would you be able to caculate for me how much time i would save by taking out my sun roof in the quarter mile?? because i know everone here when they run down the track the first thing they will do is remove there sun roof....even if you did take out the front and back seats, replaced the hood and hatch with carbon fiber ones and took out the spare tire and jack you would only be maybe a tenth or two faster? it's pointless...its all psychological...just caus you have a gutted interior you think your car is faster.....why dont you just turn your boost up a pound? that would make up for it and then some....now if there were more things you could do with out going extreamely overboard with the weight reduction...like doors, fenders, leightweight rims(which are aviable) then i would say yes it would be worth doing...but throwing a CF hood on and removing your sun roof isnt doing anything for ya...all together CF (doors, fenders, hood, hatch, leightweight rims, no door pannels, seats, rugs, stock sound dampening material, spare tire, jack, remove any subs and other acces $hit, and your "sunroof") now your talking about shaving weight/getting a better time


--------------------


I"M NOT A TOYOTA FAN, IM A FANATIC
1984 accord hatch 5 speed (T-Belt)-Junkyard
1991 VDUB jetta wolfsburg Ed. 5 speed (clutch)-junkyard
1988 Dodge Aries K (sold)
1969 Chevy El camino - Traded for celica
1991 Dodge Daytona-Traded for Celica
1988 Chevy Camaro-Work in Progress
1989 Ford Mustang LX 5.0 - For Sale
1995 Toyota Celica-Work in Progress

Posts in this topic
- dutchboy   Carbon Fiber weight reductions   Jul 4, 2007 - 4:46 PM
- - yarik83   Ill try to be consise. Is fiberglass and carbon f...   Jul 4, 2007 - 10:03 PM
- - CelicaST_CALI   yea i think the hood is probly the best carbon fib...   Jul 5, 2007 - 2:26 AM
|- - BloodyStupidDavey   QUOTE(CelicaST_CALI @ Jul 5, 2007 - 8...   Jul 5, 2007 - 6:24 AM
- - vsideboy   OR you could just stop giving any fat mates a lift...   Jul 5, 2007 - 6:40 AM
- - playr158   a) "free up 15hp per 100lbs shaved" tech...   Jul 5, 2007 - 8:10 AM
|- - dutchboy   QUOTE(playr158 @ Jul 5, 2007 - 8:10 ...   Jul 5, 2007 - 12:01 PM
- - vsideboy   Aye, strip out all the seats, interior panels and ...   Jul 5, 2007 - 8:24 AM
- - playr158   lol ltw racing seats (certified and approved of c...   Jul 5, 2007 - 12:39 PM
|- - goferris   QUOTE(playr158 @ Jul 5, 2007 - 11:39...   Jul 5, 2007 - 12:50 PM
||- - dutchboy   QUOTE (goferris @ Jul 5, 2007 - 12:5...   Jul 5, 2007 - 12:55 PM
|- - Rockford   QUOTE(playr158 @ Jul 5, 2007 - 1:39 ...   Jul 25, 2007 - 12:31 PM
- - Kadett   QUOTE(playr158 @ Jul 5, 2007 - 7:39 ...   Jul 5, 2007 - 1:05 PM
- - playr158   QUOTE(Kadett @ Jul 5, 2007 - 2:05 PM...   Jul 5, 2007 - 1:08 PM
- - laff09   Installing Lexan "glass" in the rear hat...   Jul 5, 2007 - 1:34 PM
- - playr158   QUOTE(laff09 @ Jul 5, 2007 - 2:34 PM...   Jul 5, 2007 - 1:39 PM
|- - dutchboy   QUOTE (playr158 @ Jul 5, 2007 - 1:39...   Jul 5, 2007 - 2:19 PM
- - dutchboy   I was able to pick up a Seibon OEM style CF Hood f...   Jul 24, 2007 - 8:04 PM
- - OOBE   When I replaced my stock hood with the GT-4 one, i...   Jul 24, 2007 - 11:28 PM
- - playr158   13lbs is a nice little weight savings not sure wha...   Jul 25, 2007 - 9:33 AM
- - Sinyk   You are planning all this weight reduction to save...   Jul 25, 2007 - 11:10 AM
|- - blaque_6thGen   QUOTE(Sinyk @ Jul 25, 2007 - 4:10 PM...   Jan 15, 2008 - 3:34 AM
- - vsideboy   haha dude how much petrol do you actually get thro...   Jul 25, 2007 - 11:36 AM
- - playr158   any weight savings is going to save you "some...   Jul 25, 2007 - 11:46 AM
- - vsideboy   yeah i realise this mate, what I meant was that if...   Jul 25, 2007 - 11:54 AM
- - playr158   sitting time is negate able since cars use very li...   Jul 25, 2007 - 12:09 PM
- - x_itchy_b_x   i filled almost a whole 5gal bucket with sound dea...   Jul 25, 2007 - 12:14 PM
- - playr158   itchy you scrapped on that OEM stuff stuck to the ...   Jul 25, 2007 - 12:24 PM
- - BloodyStupidDavey   Back from the dead. I had an opportunity to weigh...   Dec 22, 2007 - 1:41 PM
- - thespacepanda   Sweet. Is that under-carpet stuff hard to get out?...   Dec 22, 2007 - 6:58 PM
- - playr158   stuff under the carpet (oem noise crap that is stu...   Dec 23, 2007 - 2:41 AM
- - dagreat1   i'm pretty sure the gain from taking out the s...   Jan 15, 2008 - 2:58 AM
- - playr158   QUOTE(dagreat1 @ Jan 15, 2008 - 2:58...   Jan 15, 2008 - 7:40 AM
- - 95st-celica   i think that if your going for weight...and you wa...   Jan 15, 2008 - 10:08 AM
- - playr158   QUOTE(BloodyStupidDavey @ Dec 22, 2007 ...   Jan 15, 2008 - 10:28 AM
|- - 95st-celica   QUOTE(playr158 @ Jan 15, 2008 - 10:2...   Jan 15, 2008 - 12:46 PM
- - dabazied   Add up some carbon fiber doors to shed out some we...   Jan 15, 2008 - 12:15 PM
- - playr158   nobody makes them.........yet   Jan 15, 2008 - 12:17 PM
- - bccentaur3   What do you mean Playr? Is there actually a compan...   Jan 15, 2008 - 12:31 PM
- - playr158   hahahah...you know there is more to racing than a ...   Jan 15, 2008 - 1:00 PM
|- - 95st-celica   QUOTE(playr158 @ Jan 15, 2008 - 1:00...   Jan 15, 2008 - 1:19 PM
|- - hatchy_gt-s   QUOTE (95st-celica @ Jan 15, 2008 ...   Feb 11, 2010 - 9:05 AM
|- - jimmykay   QUOTE (hatchy_gt-s @ Feb 11, 2010 ...   Feb 12, 2010 - 10:37 AM
|- - hatchy_gt-s   QUOTE (jimmykay @ Feb 12, 2010 - 3:3...   Feb 12, 2010 - 12:50 PM
- - playr158   you can always do something else to get that time....   Jan 15, 2008 - 1:26 PM
- - dabazied   Custom CF doors would be crazy high priced..... I...   Jan 15, 2008 - 7:22 PM
- - jason   my car has cf doors, fenders, hood, trunk, roof, a...   Jan 15, 2008 - 7:47 PM
- - BonzaiCelica   Weight Reduction Modifications • Sunroof wi...   Feb 10, 2010 - 5:48 PM
- - BonzaiCelica   how about some plastic molded headlights? and a d...   Feb 12, 2010 - 12:11 PM
- - jimmykay   sorry, the CF I guess came from the thread title. ...   Feb 12, 2010 - 1:03 PM
|- - hatchy_gt-s   QUOTE (jimmykay @ Feb 12, 2010 - 6:0...   Feb 12, 2010 - 3:02 PM
- - playr158   jimmy lol. corvette should always win over a lotus...   Feb 12, 2010 - 2:01 PM
- - BonzaiCelica   QUOTE (playr158 @ Feb 12, 2010 - 3:0...   Feb 12, 2010 - 3:37 PM
- - playr158   I'm not sure which one would work, I haven...   Feb 12, 2010 - 4:30 PM
- - BonzaiCelica   ya I know. But a carbon fiber hood with white rims...   Feb 12, 2010 - 5:28 PM
- - 95st-celica   it would if you went with a C/F hatch and painted ...   Feb 12, 2010 - 7:46 PM
- - yellowchinaman   Our builds do drink alot. The most eetive way to i...   Feb 16, 2010 - 6:17 AM
- - playr158   Someone needs to produce a lexan or plexiglass rea...   Feb 16, 2010 - 9:15 AM
- - BonzaiCelica   QUOTE (playr158 @ Feb 16, 2010 - 9:1...   Mar 3, 2010 - 2:50 AM
|- - SwissFerdi   QUOTE (BonzaiCelica @ Mar 3, 2010 - 2...   Mar 3, 2010 - 11:30 AM
- - playr158   Curb weight on a USDM celica is like 2398lbs or so...   Mar 3, 2010 - 1:16 PM
|- - BonzaiCelica   QUOTE (playr158 @ Mar 3, 2010 - 2:16...   Oct 22, 2011 - 5:07 AM
- - BonzaiCelica   2,415 is the curb weight for an ST Liftback celica...   Mar 4, 2010 - 6:49 AM
- - SwissFerdi   Well, the official weight of mine is 2409 (I do no...   Mar 4, 2010 - 9:40 AM
- - BonzaiCelica   refer to my post down low. there are more accurate...   Jan 15, 2011 - 6:30 AM
- - azian_advanced   on a fwd, there's going to be more understeer ...   Jan 15, 2011 - 8:26 AM
- - playr158   yea i've removed the sunroof (fabricating a co...   Jan 15, 2011 - 6:29 PM
- - BonzaiCelica   QUOTE (playr158 @ Jan 15, 2011 - 7:2...   Jan 15, 2011 - 11:43 PM
- - willsmorke   It 's very good things to Reduce the Weight an...   Jan 24, 2011 - 1:22 AM
- - azian_advanced   lately, i've been thinking of adding weight to...   Jan 24, 2011 - 1:32 AM
- - Culpable04   or you can get thinner tires for the front.   Jan 24, 2011 - 11:51 AM
- - BonzaiCelica   Weight Reduction Modifications • Sunroof with mot...   Oct 18, 2011 - 8:30 AM
- - Arsaces   I had an Integra, I don't have numbers, but fr...   Oct 19, 2011 - 11:04 AM
- - johnyboy1976   Cant give figures but i have removed a lot of kit ...   Oct 22, 2011 - 11:12 AM
- - Rob_A   The wings and bonnet don't make too much diffe...   Oct 22, 2011 - 5:39 PM
|- - johnyboy1976   QUOTE (Rob_A @ Oct 22, 2011 - 6:39 P...   Oct 23, 2011 - 2:33 AM
|- - SwissFerdi   QUOTE (Rob_A @ Oct 22, 2011 - 6:39 P...   Oct 23, 2011 - 9:16 AM
- - BonzaiCelica   ohhh Rusty.... can we get this stickied please ,...   Oct 23, 2011 - 1:12 AM
- - BonzaiCelica   another thing I was reading from the honda tech fo...   Oct 28, 2011 - 3:40 AM
- - playr158   Bonzai, i removed all my windows. door windows ar...   Oct 28, 2011 - 8:31 AM
- - BonzaiCelica   thats not what I did player. Thats a photo taken f...   Oct 28, 2011 - 12:31 PM
- - playr158   Ahhhh thank goodness. rivets look horrible. Wish I...   Oct 28, 2011 - 2:05 PM
- - Rusty   There is this info on GTFours.uk, they also weight...   Oct 31, 2011 - 12:56 AM
- - czwalga   A lot of rally cars just rivet the sunroof hole cl...   Oct 31, 2011 - 2:56 PM
- - BonzaiCelica   look below for weight reduction totals!   Dec 20, 2012 - 1:11 AM
- - Special_Edy   First Id like to say that for every vehicle I have...   Dec 20, 2012 - 11:23 AM
- - Box   Unless you're using the car strictly for some ...   Dec 20, 2012 - 12:37 PM
- - Batman722   And back from the dead again. These are the actual...   Nov 12, 2013 - 12:12 PM
- - playr158   25lbs!!!!! for how much effort...   Nov 12, 2013 - 12:21 PM
- - Tigawoods   couple the cf hatch with plexiglass and then it m...   Nov 12, 2013 - 3:06 PM
- - Box   Just remove the hatch completely and cover it with...   Nov 12, 2013 - 4:00 PM
|- - dudeofchaos   QUOTE (Box @ Nov 12, 2013 - 6:00 PM)...   Nov 13, 2013 - 8:38 PM
- - Box   Nah... Just do it so that it's taught, and ma...   Nov 13, 2013 - 10:39 PM
- - cardshark525   It's actually not as crazy expensive as I thou...   Nov 15, 2013 - 8:38 PM
- - Batman722   I got the CF hatch in a deal and a spare stock hat...   Nov 15, 2013 - 10:10 PM
- - cardshark525   Totally understand.. I'm going for the complet...   Nov 16, 2013 - 1:04 AM
- - BonzaiCelica   Weight Reduction Modifications • Sunroof with mot...   Dec 11, 2016 - 3:07 PM
- - njccmd2002   just increase horsepower and keep the luxuries.......   Dec 4, 2017 - 11:42 AM
- - BonzaiCelica   98-99 Celica SS3 with Superstrut has thicker axles...   Feb 13, 2018 - 5:08 AM
- - BonzaiCelica   updated. was bored n weighed more parts n added to...   Apr 13, 2018 - 2:17 PM
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