Seibon OEM Style Carbon Fiber Hood and Trunk Weights
10-03-18, 12:36 AM
#1
Seibon OEM Style Carbon Fiber Hood and Trunk Weights
Hey everyone,
So there hasn't really been any conclusive data on the Seibon products as far as weights go. A lot of people get the parts for the looks but I'm more interested in the weight aspect of them. Seibon parts are essentially a fiberglass core with carbon fiber on top. This will still yield some savings over steel and very slightly over aluminum. I haven't weighed my stock hood but here are the findings:
Seibon OEM Style Carbon Hood: 23.5 lbs.
Seibon Carbon Trunk: 14 lbs.
OEM Trunk: 21.5 lbs.
The trunks were weighed without taillights and pretty much everything uninstalled as I've tried to make this as accurate as I can.
If you have the trunk, congratulations. You just lost 7.5 lbs.
So there hasn't really been any conclusive data on the Seibon products as far as weights go. A lot of people get the parts for the looks but I'm more interested in the weight aspect of them. Seibon parts are essentially a fiberglass core with carbon fiber on top. This will still yield some savings over steel and very slightly over aluminum. I haven't weighed my stock hood but here are the findings:
Seibon OEM Style Carbon Hood: 23.5 lbs.
Seibon Carbon Trunk: 14 lbs.
OEM Trunk: 21.5 lbs.
The trunks were weighed without taillights and pretty much everything uninstalled as I've tried to make this as accurate as I can.
If you have the trunk, congratulations. You just lost 7.5 lbs.
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minator (05-12-22)
10-03-18, 04:01 AM
#2
Moderator
So just skip lunch before going to the track and keep the OEM stuff, unless you like the carbon look.
10-03-18, 09:23 PM
#6
I don't have it installed but my guess would be it moves around just like the OEM one does.
10-04-18, 05:00 AM
#7
Moderator
I definately don’t mean to rain on a parade, but that’s not sufficient weight savings to make a difference in anything. It’s the equivalent of removing your jack and tire iron. I have done so for the quarter mile, it made no difference. Actually I didn’t notice a difference from removing the spare tire either. Granted the weather fluctuates a lot here so the DA makes it hard to gauge.
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10-04-18, 08:27 AM
#9
I definately don’t mean to rain on a parade, but that’s not sufficient weight savings to make a difference in anything. It’s the equivalent of removing your jack and tire iron. I have done so for the quarter mile, it made no difference. Actually I didn’t notice a difference from removing the spare tire either. Granted the weather fluctuates a lot here so the DA makes it hard to gauge.
10-04-18, 12:55 PM
#10
Moderator
Fair point, but check out John's build thread. The power of numbers adds up and he's made some significant cumulative weight savings. The hood and trunk are also at a higher point on the car than the jack stand, etc (which i am sure he has also probably removed) so you'll have the benefit of lowering the center of gravity of the car too (no idea by how much...maybe nothing, lol).
people debate lightweight wheels. I have put them on many cars and felt differences every time. Even my IS350 has some 18 pound bbs on them. I thought it was running really well because the weather cooled off... I had forgotten I swapped out the wheels. It feels quicker in daily driving.
my next major mod on the F... TE37sl.
I like carbon, just don’t see the value in it on this car, except for the roof arguably.
Last edited by Jwconeil; 10-04-18 at 12:58 PM.
10-04-18, 01:31 PM
#12
10-04-18, 04:30 PM
#13
That's crazy, I would have assumed it would be more weight savings with the trunk. Bummer.
Next test should be to see if the vented hood actually drops engine bay temps or better yet reduces heat soak and IAT's.
Next test should be to see if the vented hood actually drops engine bay temps or better yet reduces heat soak and IAT's.