The 370Z Weight Reduction Thread

RCZ · 02-08-2009, 12:39 PM

ok cool. Practice > Theory.

Cown3d · 02-09-2009, 02:28 PM

yep that theory is completely flawed unless you were to use like 4 or 6 gauge

stick to 0 gauge and you will most likely not even have a .1 voltage drop from the battery to the front

sound to me like his expertise isnt electronics

RCZ · 02-09-2009, 05:26 PM

Definitely not and neither is it mine. If there is one area that I don't know enough about, it is electricity and conductivity. I have never studied that field sadly.

370sed · 02-10-2009, 09:44 AM

I have relocated batteries and also have used the PC680. Eventually I got back to just replacing OEM bat w/PC680 for weight savings in place. Why? Relocating means heavy gauge wire ('0' - '2') to carry the heavy starter current without voltage drop. Aside from the inconvenience of installing the wire, the potential voltage drop of extra connections, and PITA of stuffing the battery somewhere where it was not designed to be, but the bigger issue is weight.

The heavy cable actually weighs a considerable amount per ft, the new mounting bracket weighs more. Add that up and the battery and you'll find actual total weight saving diminished significantly. Leaving the battery in its original gets you the most static weight lost. The only downside is there is not fore to aft weight change.

The PC680 works good, but tends to discharge quicker over time than stock, and I've found they need replacing about every 2 yrs as they lose charging capacity.

RCZ · 02-11-2009, 08:40 AM

Good info, I think you should buy a Z. We could use another voice of experience.

tvfreakazoid · 02-11-2009, 03:23 PM

What is the point of relocating the battery to the trunk?

Quote:

Originally Posted by RCZ

Good info, I think you should buy a Z. We could use another voice of experience.

Endgame · 02-11-2009, 03:53 PM

for better weight distribution....

Crash · 02-12-2009, 03:17 AM

Yeah, if you're moving all the stuff out of the trunk, moving the battery to the trunk will off set 45Lbs from front to back (roughly a 90Lbs shift). That makes a BIG difference in traction and handling.

tvfreakazoid · 02-12-2009, 04:45 AM

How heavy is the pc680 battery? Aren't those batters a lot lighter than stock?

JoeyD · 02-12-2009, 10:20 AM

15.4 lbs

travisjb · 02-14-2009, 10:48 AM

FYI. I found out that odyssey does not recommend the 680 motorcycle battery for this car... i'm not saying it won't work, just that when my shop called them - they recommended instead using the 925. The 925 weighs 26 lbs. I will be relocating the battery to rear also, which is even more reason to go with a slightly higher amperage option vs the 680. Rgds, Travis

RCZ · 02-14-2009, 11:47 AM

Awesome, thanks for the info travis.

Cown3d · 02-14-2009, 01:34 PM

with 0 gauge wire, i guarentee there will be no problems out of a pc680

frost · 02-14-2009, 01:36 PM

Do you buy battery boxes, or some form of containment when locating to the back? I imagine you don't just throw the battery back there.

Cown3d · 02-14-2009, 01:38 PM

actually with the pc680 thats not needed.
same with any other high quality (i.e. expensive battery)

These batteries are either dry cell or gell cell. this makes them impervious to leaks and means so can mount them upside down if desired

02-12-2009, 03:17 AM	#143 (permalink)
Crash A True Z Fanatic Join Date: Dec 2008 Location: Los Angeles Posts: 1,853 Drives: 02 Corvette Z06 Rep Power: 590	Yeah, if you're moving all the stuff out of the trunk, moving the battery to the trunk will off set 45Lbs from front to back (roughly a 90Lbs shift). That makes a BIG difference in traction and handling. __________________ 2002 Corvette Z06 - Totaled 2003 Corvette Z06 50th Anniversary

02-12-2009, 04:45 AM	#144 (permalink)
tvfreakazoid A True Z Fanatic Join Date: Jan 2009 Location: kommie kali Posts: 1,238 Drives: 2015 Audi S5; 6spd. Rep Power: 10324	How heavy is the pc680 battery? Aren't those batters a lot lighter than stock? __________________ Mudders milk

02-12-2009, 10:20 AM	#145 (permalink)
JoeyD Enthusiast Member Join Date: Jan 2009 Location: Raeford, NC Posts: 305 Drives: 09 NISMO 370Z Rep Power: 186	15.4 lbs __________________ When was the last time you did 230MPH in something with 4 seats?

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02-08-2009, 12:39 PM	#136 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	ok cool. Practice > Theory.

02-09-2009, 02:28 PM	#137 (permalink)
Cown3d Base Member Join Date: Jan 2009 Location: Durham, NC Posts: 113 Drives: 87' Mazda rx7 TII Rep Power: 16	yep that theory is completely flawed unless you were to use like 4 or 6 gauge stick to 0 gauge and you will most likely not even have a .1 voltage drop from the battery to the front sound to me like his expertise isnt electronics

02-09-2009, 05:26 PM	#138 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	Definitely not and neither is it mine. If there is one area that I don't know enough about, it is electricity and conductivity. I have never studied that field sadly.

02-10-2009, 09:44 AM	#139 (permalink)
370sed Base Member Join Date: Feb 2009 Location: NH Posts: 46 Drives: RX-8 Rep Power: 16	I have relocated batteries and also have used the PC680. Eventually I got back to just replacing OEM bat w/PC680 for weight savings in place. Why? Relocating means heavy gauge wire ('0' - '2') to carry the heavy starter current without voltage drop. Aside from the inconvenience of installing the wire, the potential voltage drop of extra connections, and PITA of stuffing the battery somewhere where it was not designed to be, but the bigger issue is weight. The heavy cable actually weighs a considerable amount per ft, the new mounting bracket weighs more. Add that up and the battery and you'll find actual total weight saving diminished significantly. Leaving the battery in its original gets you the most static weight lost. The only downside is there is not fore to aft weight change. The PC680 works good, but tends to discharge quicker over time than stock, and I've found they need replacing about every 2 yrs as they lose charging capacity.

02-11-2009, 08:40 AM	#140 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	Good info, I think you should buy a Z. We could use another voice of experience.

02-11-2009, 03:53 PM	#142 (permalink)
Endgame A True Z Fanatic Join Date: Nov 2008 Location: Phoenix Posts: 1,613 Drives: Nothing Now! Rep Power: 224	for better weight distribution....

02-14-2009, 11:47 AM	#147 (permalink)
RCZ A True Z Fanatic Join Date: Nov 2008 Location: Miami Posts: 6,403 Drives: '09 370Z Rep Power: 1119	Awesome, thanks for the info travis.

02-14-2009, 01:34 PM	#148 (permalink)
Cown3d Base Member Join Date: Jan 2009 Location: Durham, NC Posts: 113 Drives: 87' Mazda rx7 TII Rep Power: 16	with 0 gauge wire, i guarentee there will be no problems out of a pc680

02-14-2009, 01:38 PM	#150 (permalink)
Cown3d Base Member Join Date: Jan 2009 Location: Durham, NC Posts: 113 Drives: 87' Mazda rx7 TII Rep Power: 16	actually with the pc680 thats not needed. same with any other high quality (i.e. expensive battery) These batteries are either dry cell or gell cell. this makes them impervious to leaks and means so can mount them upside down if desired