yet another alternator question - Zilvia.net Forums | Nissan 240SX (Silvia) and Z (Fairlady) Car Forum

adstudio3d · 10-10-2008, 08:22 AM

Ok heres the deal

car was running good, we dropped in an SR and ran good no problems.
It just sat for a couple months and with a full battery, if it sits for 4-5 days it dies.
friend ran some tests, turned out to have a short in the alt and could only get 12.8 volts max. Replaced it with a 90amp KA alt and was charging like normal again.

I noticed that there was no ground wire from the back of the alt, but figured i didn't have a problem for almost a year before this and didn't ground the new one after replacing either...

Would not grounding the alt lead to discharging the battery over a few days?
Also, since it didn't have a ground on there, I need to know what size wire is on the 90amp KA alt?

projectRDM · 10-10-2008, 10:23 AM

Stock size wire is 10ga, anything bigger than that is perfect. I used a piece of leftover 4ga for mine.

adstudio3d · 10-10-2008, 10:29 AM

damn, was hoping it was 12ga just found a whole roll of it. thanks.

projectRDM · 10-10-2008, 10:44 AM

Quote:

Originally Posted by adstudio3d

damn, was hoping it was 12ga just found a whole roll of it. thanks.

That should be fine. The lead is less than 8" long. Just ground it well to the chassis.

aziankingz · 10-10-2008, 01:13 PM

Quote:

Originally Posted by luisgonz

dude, how about searching. No one reply back. He needs to learn.

. .

10-10-2008, 08:22 AM	#1
adstudio3d Zilvia Member Join Date: Nov 2005 Location: Dirty Jerz! Posts: 162 Trader Rating: (0) Feedback Score: 0 reviews	yet another alternator question Ok heres the deal car was running good, we dropped in an SR and ran good no problems. It just sat for a couple months and with a full battery, if it sits for 4-5 days it dies. friend ran some tests, turned out to have a short in the alt and could only get 12.8 volts max. Replaced it with a 90amp KA alt and was charging like normal again. I noticed that there was no ground wire from the back of the alt, but figured i didn't have a problem for almost a year before this and didn't ground the new one after replacing either... Would not grounding the alt lead to discharging the battery over a few days? Also, since it didn't have a ground on there, I need to know what size wire is on the 90amp KA alt? __________________ Marketing and event photographer www.natephoto.com XTC - Custom Paint and Body coming soon...

10-10-2008, 10:23 AM	#2
projectRDM Post Whore! Join Date: Dec 2002 Location: Atlanta Age: 51 Posts: 13,812 Trader Rating: (12) Feedback Score: 12 reviews	Stock size wire is 10ga, anything bigger than that is perfect. I used a piece of leftover 4ga for mine. __________________ FORMERLY R240NA Learn what's really going on and protect your assets now before they're gone forever: www.paypalsucks.com

10-10-2008, 10:29 AM	#3
adstudio3d Zilvia Member Join Date: Nov 2005 Location: Dirty Jerz! Posts: 162 Trader Rating: (0) Feedback Score: 0 reviews	damn, was hoping it was 12ga just found a whole roll of it. thanks. __________________ Marketing and event photographer www.natephoto.com XTC - Custom Paint and Body coming soon...