BSP Weight reduction?
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I know there have been several threads about reducing weight in the 350Z, but my question is a little more specific. What things can we do to reduce weight in the car and remain BSP legal? I read the 2006 rule book, and I could not find any particular mention of accepted removal of things to reduce weight. I have heard many people say how much the top cars weigh at nationals, so somebody help me out by letting me know what I can remove from the car and remain class legal. I am planning on getting the car setup and ready for Nationals next year during the off season.
Also, feel free to disect my parts list in my signiture if you see anything that is not class legal.
Thanks,
Vince
Also, feel free to disect my parts list in my signiture if you see anything that is not class legal.
Thanks,
Vince
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Originally Posted by jmckuhen
I know there have been several threads about reducing weight in the 350Z, but my question is a little more specific. What things can we do to reduce weight in the car and remain BSP legal? I read the 2006 rule book, and I could not find any particular mention of accepted removal of things to reduce weight. I have heard many people say how much the top cars weigh at nationals, so somebody help me out by letting me know what I can remove from the car and remain class legal. I am planning on getting the car setup and ready for Nationals next year during the off season.
Also, feel free to disect my parts list in my signiture if you see anything that is not class legal.
Thanks,
Vince
Also, feel free to disect my parts list in my signiture if you see anything that is not class legal.
Thanks,
Vince
btw your radiator is not SP legal.
![](https://my350z.com/forum/images/smilies/icon08.gif)
Last edited by ULLLOSE; 08-29-2006 at 12:11 PM.
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Originally Posted by ULLLOSE
btw your radiator is not SP legal. ![](https://my350z.com/forum/images/smilies/icon08.gif)
![](https://my350z.com/forum/images/smilies/icon08.gif)
![Frown](https://my350z.com/forum/images/smilies/frown.gif)
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Wheels of course, the stockers are heavy and weak compared to a good forged set. Suspension components if you can find lighter ones. My other car lost a bunch of weight when I installed coilovers, because the old struts were steel and the coilovers were aluminum. A titanium exhaust would be legal, and lighter than stainless pipes. Worth looking into, anyway.
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Originally Posted by 12AutoX
Wheels of course, the stockers are heavy and weak compared to a good forged set. Suspension components if you can find lighter ones. My other car lost a bunch of weight when I installed coilovers, because the old struts were steel and the coilovers were aluminum. A titanium exhaust would be legal, and lighter than stainless pipes. Worth looking into, anyway.
In SP you wont save much weight on suspension. On exhaust removing the cats and maybe a nice header will save a little.
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So basically I can not remove any interior panels or anything that would get me sub 3000lbs? I have seen several people around here run in BS with all the interior panels removed from the rear hatch, is that not legal?
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Originally Posted by 12AutoX
Wheels of course, the stockers are heavy and weak compared to a good forged set. Suspension components if you can find lighter ones. My other car lost a bunch of weight when I installed coilovers, because the old struts were steel and the coilovers were aluminum. A titanium exhaust would be legal, and lighter than stainless pipes. Worth looking into, anyway.
Thanks for the advise. I might look into replacing the Nismo with a titanium exhaust for some more weight savings. I already have 17x9" Enkei RPF1's which weigh in at about 15.9lbs each, so I don't see saving much if any more weight with wheels. If I could save some more weight with the wheels, I am sure it would not be worth the $ I would have to spend to save an additional pound.
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Single .035" wall stainless exhaust with not cats or muffler saves 42 lbs.
Wheels and tires, even after upgrading to 285/30-18s on 10.5" wide wheels, saves 55 lbs.
Race driver's seat and child go-kart passenger seat saves 28 lbs.
Removal of all AC components saves 20 lbs (?)
Smaller battery saves 12 lbs (?).
Aluminum body shocks with 2.25" OD coil overs saves 15 lbs. (?).
Hollow CroMo tubular ARBs with aluminum pillow blocks and end links saves 10 lbs. (?).
Aluminum flywheel and 4.5" OD DD clutch saves 18 lbs. (?)
Right off the top of my head it looks like you can pull 200 lbs out of the car without resorting to update/backdate. A fully prepared SP car is typically 10 to 15% lighter then a comparable Stock category car.
Wheels and tires, even after upgrading to 285/30-18s on 10.5" wide wheels, saves 55 lbs.
Race driver's seat and child go-kart passenger seat saves 28 lbs.
Removal of all AC components saves 20 lbs (?)
Smaller battery saves 12 lbs (?).
Aluminum body shocks with 2.25" OD coil overs saves 15 lbs. (?).
Hollow CroMo tubular ARBs with aluminum pillow blocks and end links saves 10 lbs. (?).
Aluminum flywheel and 4.5" OD DD clutch saves 18 lbs. (?)
Right off the top of my head it looks like you can pull 200 lbs out of the car without resorting to update/backdate. A fully prepared SP car is typically 10 to 15% lighter then a comparable Stock category car.
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Originally Posted by jmckuhen
So basically I can not remove any interior panels or anything that would get me sub 3000lbs? I have seen several people around here run in BS with all the interior panels removed from the rear hatch, is that not legal?
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i am the king of lightened cars!!
lightweight battery will save you about 30 pounds, stock is about 40 and little racing on weighs 11 pounds.
airbags are actually heavy as well as the stock steering wheel. you could easily save 40 pounds with both of them taken out.
i dont have powersteering which all weighed around 40 pounds
you can cut down 10 pounds a rim of unsprung weight with no issues,
my tanabe lightweight single full exhaust weighs 18 pounds, stock is around 60 pounds, i forget but i weighed it....
factory seats weigh, 49 driver and 47 passenger, you can cut down 30 pounds out of this combo with racing seats (not CF seats, even more with those)
a great way of weight savings is to take and gut the car, then put back what needs to be in there, nissan LOVES to use 18 brackets for one thing, a lot of these can be taken out along with a lot of steel mounting brackets under the dash
i have had all the plastic gutted out from the front seats back, believe it or not it all adds up to a lot of weight.
remove all horns, windsheild wiper and weight in trunk, all window washing components, bumper reinforcements (if you are crazy like me) etc
i had my Z weighing 2780 daily driving weight with both seats in and the cab looked stock....
good luck and hope i help out some people, my car weighs 2920 koyo and greddy tt kit....
lightweight battery will save you about 30 pounds, stock is about 40 and little racing on weighs 11 pounds.
airbags are actually heavy as well as the stock steering wheel. you could easily save 40 pounds with both of them taken out.
i dont have powersteering which all weighed around 40 pounds
you can cut down 10 pounds a rim of unsprung weight with no issues,
my tanabe lightweight single full exhaust weighs 18 pounds, stock is around 60 pounds, i forget but i weighed it....
factory seats weigh, 49 driver and 47 passenger, you can cut down 30 pounds out of this combo with racing seats (not CF seats, even more with those)
a great way of weight savings is to take and gut the car, then put back what needs to be in there, nissan LOVES to use 18 brackets for one thing, a lot of these can be taken out along with a lot of steel mounting brackets under the dash
i have had all the plastic gutted out from the front seats back, believe it or not it all adds up to a lot of weight.
remove all horns, windsheild wiper and weight in trunk, all window washing components, bumper reinforcements (if you are crazy like me) etc
i had my Z weighing 2780 daily driving weight with both seats in and the cab looked stock....
good luck and hope i help out some people, my car weighs 2920 koyo and greddy tt kit....
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airbags are actually heavy as well as the stock steering wheel. you could easily save 40 pounds with both of them taken out.
i dont have powersteering which all weighed around 40 pounds
a great way of weight savings is to take and gut the car, then put back what needs to be in there, nissan LOVES to use 18 brackets for one thing, a lot of these can be taken out along with a lot of steel mounting brackets under the dash
i have had all the plastic gutted out from the front seats back, believe it or not it all adds up to a lot of weight.
remove all horns, windsheild wiper and weight in trunk, all window washing components, bumper reinforcements (if you are crazy like me) etc
i dont have powersteering which all weighed around 40 pounds
a great way of weight savings is to take and gut the car, then put back what needs to be in there, nissan LOVES to use 18 brackets for one thing, a lot of these can be taken out along with a lot of steel mounting brackets under the dash
i have had all the plastic gutted out from the front seats back, believe it or not it all adds up to a lot of weight.
remove all horns, windsheild wiper and weight in trunk, all window washing components, bumper reinforcements (if you are crazy like me) etc
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Originally Posted by streetracer
Anybody know stock weight of the OEM seat?
Originally Posted by Audible Mayhem
factory seats weigh, 49 driver and 47 passenger, you can cut down 30 pounds out of this combo with racing seats (not CF seats, even more with those)
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Hey Audible, what seats did you use and with what brackets? My concern with aftermarket seats is not being able to move the seat back and forth and clipping it to the factory locations for a secure fit. What was your experience?
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Originally Posted by streetracer
Hey Audible, what seats did you use and with what brackets? My concern with aftermarket seats is not being able to move the seat back and forth and clipping it to the factory locations for a secure fit. What was your experience?
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Most racers I know run either the Sparco/Cobra aluminum fixed brackets or the Toyota universal sliders as pictured here:
http://www.subesports.com/products/c...bra/prodID/676
http://www.subesports.com/products/c...bra/prodID/676
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Originally Posted by jmckuhen
Crap! Looks like you can't do much of anything to lighten the Z. ![](https://my350z.com/forum/images/smilies/icon22.gif)
![](https://my350z.com/forum/images/smilies/icon22.gif)