 How to beef up your alternator wire |
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 Dec 30, 2008 - 10:56 AM
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Enthusiast  Joined Dec 14, '06 From MN, USA Currently Offline Reputation: 2 (100%)  |
Would a higher or lower fuse be betteR?
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Dec 30, 2008 - 5:51 PM
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 Enthusiast Joined Mar 8, '04 From Newport, RI Currently Offline Reputation: 63 (99%) |
from the battery the + goes to the 100amp alt fuse then goes to the alternator. All the rest the fuses/relays see 60amp and lower.
The fact that a stock M/T GT alternator is 70amp and an auto GT alt is 80amp, the 100amp fuse is there just to guard against any power surges that's over 100amps. IMO I would go for atleast and 80amp fuse, or even 100amp, just like the stock system and to make sure you're getting the maximum amount of power the alternator is producing. Anything higher than a 100amp fuse that would be bad. -------------------- |
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Feb 1, 2009 - 1:45 PM
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Enthusiast Joined Oct 2, '07 From Manitoba, Canada Currently Offline Reputation: 6 (100%) |
   
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Feb 1, 2009 - 2:57 PM
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 Enthusiast Joined Aug 31, '02 From Philadelphia, PA Currently Offline Reputation: 8 (100%) |
Promasta, I hope you used a fuse!
QUOTE (Batman722 @ Dec 30, 2008 - 5:51 PM)  from the battery the + goes to the 100amp alt fuse then goes to the alternator. All the rest the fuses/relays see 60amp and lower. The fact that a stock M/T GT alternator is 70amp and an auto GT alt is 80amp, the 100amp fuse is there just to guard against any power surges that's over 100amps. IMO I would go for atleast and 80amp fuse, or even 100amp, just like the stock system and to make sure you're getting the maximum amount of power the alternator is producing. Anything higher than a 100amp fuse that would be bad. The fuse size you go with, should depend on the gauge wire that you use. 0-4 gauge would probably be good to use with an 80-100amp fuse, and 8 gauge would probably work best with a 60amp fuse. You also have to see what is the max fuse size for the fuse holder you use. In my case I used 8gauge wire with a 60amp fuse, and its been working great ever since. I personally think that the 100amp fuse toyota used was way too much. One can argue that they must know what they are doing, but we have seen cases of melted alternator wiring, and the 100 amp fuse never blew. This should never happen. -------------------- 15PSI - 30MPG - Megasquirt Tuned
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Feb 1, 2009 - 3:10 PM
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Enthusiast Joined Oct 2, '07 From Manitoba, Canada Currently Offline Reputation: 6 (100%) |
haha nope.
car hasn't burnt to the ground yet. but i will put an 80 amp fuse in this week. |
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Feb 1, 2009 - 6:06 PM
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Enthusiast Joined Jan 22, '09 From Bremen Currently Offline Reputation: 2 (100%) |
Approximately how much wire did you use? (ft.)
I am thinking about doing this because I have a new alternator on the way, and I might as well do it while I am replacing the alt. |
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Feb 1, 2009 - 6:36 PM
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 Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
i used three feet i think. not very much. autozone switch to starter cable FTW
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Feb 3, 2009 - 1:05 AM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
here is my set up.
  
-------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Feb 8, 2009 - 12:51 AM
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Enthusiast Joined Jan 22, '09 From Bremen Currently Offline Reputation: 2 (100%) |
Also, did you just leave the factory alternator power wire, or did you disconnect it?
And if you did disconnect it, did you remove it from the car or what? Thanks, -Ryan |
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Feb 8, 2009 - 1:16 AM
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Enthusiast Joined Mar 22, '07 From Houston, TX Currently Offline Reputation: 4 (100%) |
QUOTE (92-gt @ Feb 7, 2009 - 11:51 PM) Also, did you just leave the factory alternator power wire, or did you disconnect it? And if you did disconnect it, did you remove it from the car or what? Thanks, -Ryan We just added a "helper wire." Which means we left the stock wire as is. -------------------- QUOTE "And, as always, your friendship, help, and dedication to the advancement of Texas Celica dominance is GREATLY appreciated. Thanks bro." -DEATH 1994 GT: V6 swap, 5speed E53 W/ LSD, All Power, now RED 1995 ST: SOLD @273k miles, Auto, all power, CarPC, White 1994 ST: Totaled, 5spd, all power, Red RIP 07/09/09 @ 241,810 1994 Lexus LS400: This is my new DD |
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Feb 14, 2009 - 9:58 PM
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Enthusiast Joined Jan 22, '09 From Bremen Currently Offline Reputation: 2 (100%) |
I finished this a couple days ago on my 5th gen. I used 4 gauge for the alternator power wire and 8 gauge for my grounds. For the power wire I used a 70 amp fuse. I got a pretty nice fuse holder that actually has a digital volt meter built in to it.
 I will get pictures up tomorrow. |
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