alternator and wiring

[Joeaus08]

I want to replace my alternator to a 100 amp unit, I understand there is some wiring and/or battery cables that will need to be changed.

Any pointers? Also, what is the stock amperage on a '73 "Q" code Mach 1.

thanks,

Joe

 

[giantpune]

Are you talking about doing a 3G conversion? They sell a mostly bolt-in kit for that. If you have the stock amp meter, it probably won't be happy about it.

 

[Joeaus08]

OKAY - THANKS

 

[Hemikiller]

Depending upon the options, you could have up to a 70A alternator. The typical Ford rear terminal alternator topped out at 65-ish amps. The side terminal could be had up to 90A in other car lines.

Powermaster has some direct fit options that are 75A in a small case 1G and more in other styles.

https://powermastermotorsports.com/catalog.html#

 

[Joeaus08]

Thanks for the info!

 

[Bobby]

Any mod you'll need to do is increase the size of your charging wire from your alternator to your starter relay and then to your battery. #4 AWG copper wire will generally suffice. You can go to #2 copper if you feel generous but #4 in that short distance will do.

 

[Joeaus08]

Any mod you'll need to do is increase the size of your charging wire from your alternator to your starter relay and then to your battery. #4 AWG copper wire will generally suffice. You can go to #2 copper if you feel generous but #4 in that short distance will do.

thank you!

 

[4thesporty]

Painless sells a good wiring kit for a 3g conversion at a reasonable cost. I used it and a Duralast alternator for a 94 mustang on my 71.

 

[Joeaus08]

I appreciate you!

 

[AcesArneson]

PA Performance sells the complete 1G to 3G conversion kit. Do a bit of research on what will happen to your entire electrical system when you add the extra current. I recall the alternator dummy light on the dash and the ammeter gauge being an issue and possibly starting electrical overheating in the dash. Rocketman sells a conversion kit where you send your ammeter gauge in to him and he will send you back a voltage gauge by rebuilding it. It takes a couple month but it comes back looking like it was just installed right off the line.

 

[Cleveland Crush]

PA Performance sells the complete 1G to 3G conversion kit. Do a bit of research on what will happen to your entire electrical system when you add the extra current. I recall the alternator dummy light on the dash and the ammeter gauge being an issue and possibly starting electrical overheating in the dash. Rocketman sells a conversion kit where you send your ammeter gauge in to him and he will send you back a voltage gauge by rebuilding it. It takes a couple month but it comes back looking like it was just installed right off the line.

Not telling anyone what to buy or who to business with, BUT my personal experience with PA Performance warranty service has been pathetic.
Round 1:
Purchased their "Complete" 1G to 3G alternator kit; They forgot to include the charge wire.

Round 2:
Alternator internal fan broke loose; they eluded I was the culprit in the alternator's demise and reluctantly sent me a replacement.

Round 3:
About two years into the replacement alternator and 30 miles from home the alternator started to way over charge at 16+ volts and started squealing and smoking, it's rear bearing lost it's grease seal, threw it's grease and seized up. Amazingly PA Performance stated: "The bearing is fine, but we'll replace it for good measure"!. In addition they wanted a $30 shipping fee to return it to me. Needless to say, I gave them my heart felt recommendation on what to do with their alternator...

 

[AcesArneson]

Not telling anyone what to buy or who to business with, BUT my personal experience with PA Performance warranty service has been pathetic.
Round 1:
Purchased their "Complete" 1G to 3G alternator kit; They forgot to include the charge wire.

Round 2:
Alternator internal fan broke loose; they eluded I was the culprit in the alternator's demise and reluctantly sent me a replacement.

Round 3:
About two years into the replacement alternator and 30 miles from home the alternator started to way over charge at 16+ volts and started squealing and smoking, it's rear bearing lost it's grease seal, threw it's grease and seized up. Amazingly PA Performance stated: "The bearing is fine, but we'll replace it for good measure"!. In addition they wanted a $30 shipping fee to return it to me. Needless to say, I gave them my heart felt recommendation on what to do with their alternator...

Thanks for the heads up, when I install it I will check out the fan when I open it up to clock it.