The 370Z Weight Reduction Thread

imag · 05-14-2009, 11:32 PM

Might want to add a lightweight flywheel into the mix:

Nismo Flywheel and Clutch kit now available

Overall weight reduction isn't the reason for going to a light flywheel, but at 20 lbs. savings, it's not a bad side effect...

Zeto · 05-15-2009, 11:32 AM

Is this the lightest flywheel out in the market?

510z · 05-22-2009, 02:26 AM

How much weight will the antivirus software save me?

Quote:

SPAM POST

ZforMe · 05-22-2009, 07:47 AM

10 to 15 megabytes.

imag · 05-24-2009, 07:57 PM

Quote:

Originally Posted by Zeto

Is this the lightest flywheel out in the market?

OT, but I wouldn't think you'd want to go any lighter.

ZforMe · 06-03-2009, 12:05 AM

Quote:

Originally Posted by DDMotorsports

Finally installed my Odyssey PC680 battery

.

Keeping it in the stock location for now.

I know this is going way back, but when you had the PC680 in the stock location, did you use a custom bracket or anything to hold it in place, or could you use what was there from the stock battery?

M.Bonanni · 06-03-2009, 10:10 AM

Quote:

Originally Posted by ZforMe

I know this is going way back, but when you had the PC680 in the stock location, did you use a custom bracket or anything to hold it in place, or could you use what was there from the stock battery?

You can't use the stock battery mounting ties unfortunately. I used an old mount that I had from my old time attack 350Z. I have been trying to find something similar to sell, but can't find anything like that. I have no idea where the one I used came from or who made it lol. If I start getting a lot of people asking for it then I suppose I can find a CNC shop in town that can make custom ones.

FricFrac · 06-03-2009, 05:58 PM

Nice thread - not sure how I missed it before.

Re: hp/lb wasn't the old school formula for every 100lbs you lost you gained the equivalent of 10ish HP? Time to hit the tread mill boys

I gained 5hp in two years of going to the gym in every car I drive - sweet! Maybe I should try driving by remote control for another 17.5 HP gain...

For the fluids (washer fluid) wouldn't the easiest measurement be to empty out the tank then measure what you fill it back up with to figure the volume out. Dunno what the specific gravity of washer fluid is but its probably pretty close to water so we'll say 1kg per liter....

Anyone use Lithium Maganese technology for batteries? Might be time to whip up an ultralight battery pack - what kind of capacity would be a decent target to shoot for? Cranking amps isn't going to be an issue here.... Peak voltage is going to be 16.8V and nominal is 14.8V - does anyone know if this needs to be regulated down or is there a regulator already in place after the battery?

Any weight specs on the Stillen exhaust or intake components?

travisjb · 06-03-2009, 07:13 PM

I didn't weight the stillen exhaust but can tell you the muffler was HEAVY... I had another shop build a muffler for my z as well - eventual sold it - but it was about half the weight of the stillen muffler i'd guess... stillen was clearly focused on HPs, not LBs

FricFrac · 06-03-2009, 07:37 PM

FYI and thanks to Dean at Stillen (man their support is AWESOME - can't say the same for other companies I've been dealing with lately).....

Cat back exhaust - 90 lbs + 40lbs from stock - ouch
High Flow Cat - 15 lbs -6 lbs from stock
G3 Intake - under 10 lbs

UPDATE: Sorry there was a little miscommunication and I listed the shipping weight here instead of the actual.... thanks Josh for the real world data although if I drive around with the shipping crate I'm still right ;P

Stock Exhaust

Muffler Section - 26.8lbs (highly inefficient)
Y-Pipe - 11.6lbs
Resonated Y-Pipe - 15.6lbs
Total: 54.0lbs

STILLEN Exhaust

Muffler Section - 39.6lbs (proven huge hp gains)
Y-Pipe - 11.3lbs
Resonated Y-Pipe - 14.4lbs
Total: 65.3lbs

Difference: +11.3lbs and 18whp

travisjb · 06-03-2009, 10:24 PM

suppose at least the weight distribution from stillen exhaust goes to the right places... low and back

LiquidZ · 06-05-2009, 11:59 AM

Quote:

Originally Posted by FricFrac

FYI and thanks to Dean at Stillen (man their support is AWESOME - can't say the same for other companies I've been dealing with lately).....

Cat back exhaust - 90 lbs + 40lbs from stock - ouch
High Flow Cat - 15 lbs -6 lbs from stock
G3 Intake - under 10 lbs

I can't see how the CBE weighs 40 lbs. more.

miguez · 06-05-2009, 12:14 PM

I just PMed Josh@Stillen to confirm.

Josh@STILLEN · 06-05-2009, 12:53 PM

Quote:

Originally Posted by FricFrac

FYI and thanks to Dean at Stillen (man their support is AWESOME - can't say the same for other companies I've been dealing with lately).....

Cat back exhaust - 90 lbs + 40lbs from stock - ouch
High Flow Cat - 15 lbs -6 lbs from stock
G3 Intake - under 10 lbs

I'm sorry for the confusion, I'll confer with Dean if that's where you got the exhaust numbers. Here's the correct info:

Stock Exhaust

Muffler Section - 26.8lbs (highly inefficient)
Y-Pipe - 11.6lbs
Resonated Y-Pipe - 15.6lbs
Total: 54.0lbs

STILLEN Exhaust

Muffler Section - 39.6lbs (proven huge hp gains)
Y-Pipe - 11.3lbs
Resonated Y-Pipe - 14.4lbs
Total: 65.3lbs

Difference: +11.3lbs and 18whp

Also note that the weight is at the lowest point of the car, over the rear wheels, which will increase traction.

miguez · 06-05-2009, 12:59 PM

Quick work Josh, thanks!

05-22-2009, 07:47 AM	#199 (permalink)
ZforMe Base Member Join Date: Jan 2009 Location: Memphis TN Posts: 238 Drives: 370Z Sport Auto PG Rep Power: 16	10 to 15 megabytes. __________________ 13.369 @ 102.73 Bone Stock. BERK HFC's installed 5/14/09 @ 1490miles, 13.212 @ 106.15. Cobb Post MAF Hoses installed 3/20/10 @ 5,043miles, future: FI exhaust with 18" res and s/s cans.

06-03-2009, 07:13 PM	#204 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	I didn't weight the stillen exhaust but can tell you the muffler was HEAVY... I had another shop build a muffler for my z as well - eventual sold it - but it was about half the weight of the stillen muffler i'd guess... stillen was clearly focused on HPs, not LBs __________________ 2009 370Z #104 For Sale

06-03-2009, 07:37 PM	#205 (permalink)
FricFrac A True Z Fanatic Join Date: Dec 2008 Location: Victoria, BC Posts: 1,481 Drives: 370Z 300ZX 280ZX 240 Rep Power: 228	FYI and thanks to Dean at Stillen (man their support is AWESOME - can't say the same for other companies I've been dealing with lately)..... Cat back exhaust - 90 lbs + 40lbs from stock - ouch High Flow Cat - 15 lbs -6 lbs from stock G3 Intake - under 10 lbs UPDATE: Sorry there was a little miscommunication and I listed the shipping weight here instead of the actual.... thanks Josh for the real world data although if I drive around with the shipping crate I'm still right ;P Stock Exhaust Muffler Section - 26.8lbs (highly inefficient) Y-Pipe - 11.6lbs Resonated Y-Pipe - 15.6lbs Total: 54.0lbs STILLEN Exhaust Muffler Section - 39.6lbs (proven huge hp gains) Y-Pipe - 11.3lbs Resonated Y-Pipe - 14.4lbs Total: 65.3lbs Difference: +11.3lbs and 18whp Last edited by FricFrac; 06-05-2009 at 09:33 PM. Reason: Wrong info

06-03-2009, 10:24 PM	#206 (permalink)
travisjb A True Z Fanatic Join Date: Jan 2009 Location: GSO Posts: 2,803 Drives: VIR Rep Power: 188	suppose at least the weight distribution from stillen exhaust goes to the right places... low and back __________________ 2009 370Z #104 For Sale

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05-14-2009, 11:32 PM	#196 (permalink)
imag Enthusiast Member Join Date: Mar 2009 Location: Oakland, CA Posts: 446 Drives: up the wall Rep Power: 16	Might want to add a lightweight flywheel into the mix: Nismo Flywheel and Clutch kit now available Overall weight reduction isn't the reason for going to a light flywheel, but at 20 lbs. savings, it's not a bad side effect...

05-15-2009, 11:32 AM	#197 (permalink)
Zeto Track Member Join Date: Apr 2009 Location: North NJ Age: 40 Posts: 766 Drives: 09 Pearl White 370Z Rep Power: 267	Is this the lightest flywheel out in the market?

06-03-2009, 05:58 PM	#203 (permalink)
FricFrac A True Z Fanatic Join Date: Dec 2008 Location: Victoria, BC Posts: 1,481 Drives: 370Z 300ZX 280ZX 240 Rep Power: 228	Nice thread - not sure how I missed it before. Re: hp/lb wasn't the old school formula for every 100lbs you lost you gained the equivalent of 10ish HP? Time to hit the tread mill boys I gained 5hp in two years of going to the gym in every car I drive - sweet! Maybe I should try driving by remote control for another 17.5 HP gain... For the fluids (washer fluid) wouldn't the easiest measurement be to empty out the tank then measure what you fill it back up with to figure the volume out. Dunno what the specific gravity of washer fluid is but its probably pretty close to water so we'll say 1kg per liter.... Anyone use Lithium Maganese technology for batteries? Might be time to whip up an ultralight battery pack - what kind of capacity would be a decent target to shoot for? Cranking amps isn't going to be an issue here.... Peak voltage is going to be 16.8V and nominal is 14.8V - does anyone know if this needs to be regulated down or is there a regulator already in place after the battery? Any weight specs on the Stillen exhaust or intake components?

06-05-2009, 12:14 PM	#208 (permalink)
miguez Enthusiast Member Join Date: Apr 2009 Location: Columbus, Ohio Posts: 359 Drives: '04 Cavalier Rep Power: 181	I just PMed Josh@Stillen to confirm.

06-05-2009, 12:59 PM	#210 (permalink)
miguez Enthusiast Member Join Date: Apr 2009 Location: Columbus, Ohio Posts: 359 Drives: '04 Cavalier Rep Power: 181	Quick work Josh, thanks!