The 370Z Weight Reduction Thread

[Shamu]

Lots of weight reduction in braking system if you are willing to ditch ABS. Stock pedals, master cylinder , all the abs crap weigh a ton. Replace with nice lightweight Tilton setup. About 25 lbs of weight savings.

[SPOHN]

Originally Posted by Shamu

Lots of weight reduction in braking system if you are willing to ditch ABS. Stock pedals, master cylinder , all the abs crap weigh a ton. Replace with nice lightweight Tilton setup. About 25 lbs of weight savings.

That system is very expensive. But still would love to ditch the ABS.

[Shamu]

Originally Posted by SPOHN

That system is very expensive. But still would love to ditch the ABS.

It's a matter of priorities I guess. To me its worth $1500 to have top notch pedal and master cylinder setup. Having separate master cylinders allows for more precise brake balancing. Also nice to be able to adjust pedals. But weight reduction is nice added bonus. Stock pedals are boat anchors.

[Shamu]

Roof and floors weigh a lot!

Over 130 lbs of weight!

[TrinityRacer]

How much does the roof weight out of curiosity?

[Shamu]

Going to HR heads

31.5 lbs!

[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.

[Isamu]

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.

[synolimit]

Originally Posted by Isamu

[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 I were you I'd still go 1.75x.120, which is the usual over-3K rules. I mean otherwise you're hovering right on the border of the rules, and while you might find more weight to strip, you might also add back some significant weight at some point (weight of the cage itself? cool-shirt system? fire suppression? diff cooler? aero parts? etc...). I'm not even sure which weight the 3K applies to honestly - dry or wet, driver or not, etc, but it's just kinda borderline all around, and with the .120 you don't ever have to worry about it.

[travisjb]

Originally Posted by wstar

If I were you I'd still go 1.75x.120, which is the usual over-3K rules. I mean otherwise you're hovering right on the border of the rules, and while you might find more weight to strip, you might also add back some significant weight at some point (weight of the cage itself? cool-shirt system? fire suppression? diff cooler? aero parts? etc...). I'm not even sure which weight the 3K applies to honestly - dry or wet, driver or not, etc, but it's just kinda borderline all around, and with the .120 you don't ever have to worry about it.

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...

[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.

[synolimit]

We'll there can still be more weight removed if I plan to pull AC, heater, dash etc. the weight per foot is also 0.573 lbs difference between 0.12 and 0.095 so going with 0.12 just means I'm adding more weight forcing me to go with 0.12. At the moment that adds 21.2 pounds of unneeded weight if I'm under 3k.

[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)