The 370Z Weight Reduction Thread

[synolimit]

Originally Posted by travisjb

Very much agree... plus you may find yourself in a class later on where you need to ballast weight for that class. Plus that cage may be involved with saving your life someday...

It'll be beefy.

[bleunetizen]

Originally Posted by synolimit

Just weighed in at 3083 lbs fully fueled. So I'm under 3k with a empty tank (2965) so I can now use DOM 1.75x0.095" steel for the roll cage. However rules say I could also use DOM 1.5x0.12" or DOM 1.625x0.12". But based off of a simple calculation I believe the area of the steel is not only the smallest in the 1.75x0.095" which should be the lightest, but it's also the strongest based off of I(cm^4).

I still want a lighter flywheel and rotors but I'll still be away from 3k fully fueled by 31.5 lbs. I need to find that some where.

O forgot about a racing seat. Might get 10+ pounds there plus the drivers seatbelt minus the difference of a racing seatbelt.

great stuff, that is a lot of weight saving

what have you changed/removed from a stock form so far? Tried to find out myself by reading your posts but all I can clearly see was the battery..

[wstar]

If he's getting down to the ~3K range, it's probably already substantially converted to track-only form. You don't really get down that far without gutting most of the non-essential stuff (like basically all of the interior, audio system, ac/heat, airbag system, etc)

[SPOHN]

I want to go with a fuel cell. Get rid of the OEM tank. Put a 10 gallon tank to save weight and get better weight distribution from front to rear. Which is WELL needed on our cars.

[Kingbaby]

feeling lazy...

let's talk glass removal and replacement options

I've read that lexan is great obviously but any longtime users in here? Can you go over the yellowing/scratching/visibility and whether or not you have a garage or not.

looking to purchase from this site which offers z33/z34
Lexan Windows Webshop Home page Lexan Windows Webshop

[SouthArk370Z]

Originally Posted by Kingbaby

... I've read that lexan is great obviously but any longtime users in here? Can you go over the yellowing/scratching/visibility and whether or not you have a garage or not. ...

SPOHN claims to have changed out the back glass for Lexan.

Lexan tends to break down (craze) from UV exposure, so Plexiglas, with its' greater resistance to UV, may be a better choice. YMMV

[KaienZ34]

Just from what my cousin tells me who flies helicopters, he said the lexan on them gets super brittle after a short amount of time because of the sun and whatnot. I'm sure if your z lives in a garage or is covered most of the time you should get more time out of the lexan than the copters do.

[Kingbaby]

thanks guys and that's what I've read from the Shelby guys on the kit cars...just looking for more real world use!

[wstar]

Originally Posted by SPOHN

I want to go with a fuel cell. Get rid of the OEM tank. Put a 10 gallon tank to save weight and get better weight distribution from front to rear. Which is WELL needed on our cars.

Yeah but the stock tank is low. If you put a fuel cell up in the rear body, you're raising the fuel weight higher, raising CG. Also, even though we want to shoot for even front/rear distribution, I suspect moving weight from the center outwards, even to the rear, isn't a net win. It's still a larger goal to keep the weight centered to make the car more-stable, whereas weight at the edges is like a pendulum. I don't know all the factors and how they play out relative to each other, but just things to consider...

Originally Posted by SouthArk370Z

Lexan tends to break down (craze) from UV exposure, so Plexiglas, with its' greater resistance to UV, may be a better choice. YMMV

On the other hand, Lexan is much, much tougher and more impact-resistant. Something to think about with rocks and hard chunks of rubber flying at the window, and especially something to think about in a wreck.

[SPOHN]

Trust me. It wouldn't just be placed in the rear. I've seen another 370Z where the whole rear section cut and removed with rear cage in place. The fuel cell would be lower than stock

[Shamu]

n

Originally Posted by SPOHN

Trust me. It wouldn't just be placed in the rear. I've seen another 370Z where the whole rear section cut and removed with rear cage in place. The fuel cell would be lower than stock

Really where?



I'm headed below 2600 lbs at that's with huge wheels and tires and a 26 gallon fuel cell. .......Buhahaha

[josemartinrea]

Old post I know, but were the SPL rear camber arms actually LIGHTER than stock arms?

[DR_]

Originally Posted by josemartinrea

Old post I know, but were the SPL rear camber arms actually LIGHTER than stock arms?

No.

[josemartinrea]

Originally Posted by TerribleONE

can the roof of this car even be replaced? the hatch may save some weight.. but sadly the hood only saves MAYBE 3 pounds.. because it is already aluminum.. at least this is the case on the G37 and the 370z also has an aluminum hood.. but every pound counts in the long run..

The roof has been replaced. Chris Forsburg did it in his Formula D Z.

[dimitarm]

Hello,
Just recieved the Amuse type 1 harness bar and the GTSPEC 4 Point Rear Strut Bar B-Pillar Cage.

Weighted them and the results are:

Amuse type 1 harness bar: 6.0 kg.

GTSPEC 4 Point Rear Strut Bar B-Pillar Cage: almost 6 kg including all the hardware.
Only the 3 tubes without hardware for installation: 5kg.