Honda Civic Racing: Drift/Drag/AutoX/Time Attack There are different setups needed if you are using your civic for drifting, drag or track racing

Weight Reduction

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Old Aug 6, 2004
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Weight Reduction

Will reducing the weight of the car signifcantly affect the acceleration of the car(All other items remaining equal, stock).


Lets say we remove the rear seats, spare tire and floor mats. Or you wont feel anything?
Old Aug 6, 2004
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it'll definitely feel peppier. A hypothetical rule of thumb that seems to be floating around is that 100 pounds = 10 hp. So if you somehow manage to lose 100 pounds, you'll gain 10 hp
Old Aug 6, 2004
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Is 10 HP a big deal? In terms of 0-60 times and 1/4 miles times. I guess there would be drastic removal of parts to shed 100 pounds.

I heard you can gain something like 8 hp from a catback is that true? The only think I don't like about the catback is the muffler I would like to keep my stock muffler.
Old Aug 6, 2004
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i notice a difference when i put in subs. they really seemed to weigh me down. didn't notice a huge diff removing them.
Old Aug 6, 2004
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8 hp from a catback? ... maybe for a 350z. You will be lucky to get 3 hp with the 1.7L engine. From our cars, you may get 8 hp from i/h/e if you're lucky

sohc =
Old Aug 6, 2004
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I wonder how noisy the car gets if I would remove the interior panels.
Old Aug 6, 2004
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you get wind noise like crazy.
Old Aug 6, 2004
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Would carbon fiber hoods and trunk lid's and rearview mirrors make a big weight diff ?
Old Aug 6, 2004
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Yes it is a little noisy but I don't mind. Check out my prior post about weight reduction.

http://www.7thgencivic.com/forums/sh...d.php?t=160932

not much weight but it all adds up. I plan on getting a carbon fiber hood, trunk, lexan rear windows, racing seats and anything else out there to get as light as possible. If i can shave 3-5 tenths it would be worth it to me.
Old Aug 6, 2004
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Originally Posted by Redline04
Yes it is a little noisy but I don't mind. Check out my prior post about weight reduction.

http://www.7thgencivic.com/forums/sh...d.php?t=160932

not much weight but it all adds up. I plan on getting a carbon fiber hood, trunk, lexan rear windows, racing seats and anything else out there to get as light as possible. If i can shave 3-5 tenths it would be worth it to me.

Thanks,

Good thread, got very technical about rims and tires.
Old Aug 6, 2004
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do you think i can stuff in the insulation that you can get from hope depot....under the door sill....kick panel....center console....the side holes on the trunk (behind the taillight)....to insulate the car?

that won't add more weight, right?
Old Aug 6, 2004
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Originally Posted by zen_master
do you think i can stuff in the insulation that you can get from hope depot....under the door sill....kick panel....center console....the side holes on the trunk (behind the taillight)....to insulate the car?

that won't add more weight, right?
for sound proofing or for when its cold? Or your just messing with me.
Old Aug 6, 2004
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no, actually it's for sound proofing.....

i said that cos' u said,
"I wonder how noisy the car gets if I would remove the interior panels."

hehe. sorry. just pop up in my mind.
Old Aug 6, 2004
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your right that foam insulation is pratically weightless, I see where your going with this.

I thought you were making fun of me

Last edited by nindoo; Aug 6, 2004 at 12:54 PM.
Old Aug 6, 2004
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for every 100 pounds you shed you also shed .1 seconds(approx.)
Old Aug 6, 2004
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Originally Posted by VP Stylee
for every 100 pounds you shed you also shed .1 seconds(approx.)

of your 1/4 mile or 0 to 60 ?
Old Aug 6, 2004
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1/4 mile, and that held true with my results 100lbs weight reduction and i shaved a 10th off my stock time.

Last edited by Redline04; Aug 6, 2004 at 02:11 PM.
Old Aug 6, 2004
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i gutted my eg before and it took 2 tenths of a second all i had in there was the front seat and the steering wheel. even the dash was taken out
Old Aug 6, 2004
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I wanna lose another 200lbs with a total of 300lbs that should be good for 3-5 tenths
Old Aug 6, 2004
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It wont make a significant difference in daily driving only in drag race competitions?
Will it improve handling?
Old Aug 7, 2004
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basically weight reduction is not worth it if your car weights 2500 lbs stock out the factory and has a SOHC 1.7L engine....if u had a m3 and gutted it to 2500 then were talkin but weight reduction is civics is 2 things....not practical...such as getting rid of your spare tire....ive used it A LOT and all u do really is lose creature comforts...u dont buy a civic for supreme auto crossing and to tell u the truth unless u swap the d17 for a k20a2 and do a full suspension swap ur not gonna do jack on the street....take it from me....ive dumped a good G at least in my suspension without including the cost of rims tires springs and shocks and even though i can keep with some cars (im not gonna list them cuz then people are jus gonna be ****** about it cz they dont know anything) that i should not be able to keep up with soon as we exit the corner they punch it and so do I....cept i dont move! EM2=crap EM2 w/ k20a2 and full suspension set up....ONE MEAN S.O.B.
Old Aug 7, 2004
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aftre i put in my subs it felt alooot slower. before them my friend in his base RSX used to beat me by 1 car length. after the subs, he had 2-3 car lengths on me. i dont care because its slow either way and id rather listen to good music.
Old Aug 7, 2004
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thats the way I see it.
Old Aug 7, 2004
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I guess if we want a significant change we need to pay significant $
Old Aug 7, 2004
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Keep car as light as possible. My car still feels weighed down with the kit and sub with amps. Spare tire can come out, but be sure you get a can of fix-a-flat just in case. Sound deadening doesn't help either. It all depends on what you're willing to sacrifice.
Old Aug 8, 2004
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i wouldnt bother with the back seat, all fabric foam etc. but if you want results, take out stuff like spare tire, seatbelts in front and rear shifter **** and somtimes i hear if you take out the steering wheel and replace it with duct tape it significantly reduces weight and take the hood off and the engine weighs alot so take that out then you'll have your 10 sec car
Old Aug 8, 2004
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oh yea!! and do some situps to get lighter! =P
Old Aug 8, 2004
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I don't know why a lot of people take out some of the things they take out. What, they take out all their sound deadening material and it loses about 1 pound. Retarded if you ask me
Old Aug 8, 2004
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Originally Posted by Pn0ybOiLiKehOy
oh yea!! and do some situps to get lighter! =P

Probably the best approach

Its the best modification
Old Aug 8, 2004
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Originally Posted by aznboysrfr
I don't know why a lot of people take out some of the things they take out. What, they take out all their sound deadening material and it loses about 1 pound. Retarded if you ask me


thank you



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