alternator upgrade?

allballsmustang · Jan 15, 2008

anyone use this summit 100amp alternator before:

http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D810303P&N=700+4294925143+4294839060+4294880793+4294908331+4294908282+4294840126+4294924930+115&autoview=sku

just wondering if its a plug and play type deal or if i have to start upgrading wires? i wanna upgrade to an electric fan and i was hoping this will do the trick.

thanks
jim

stykthyn · Jan 15, 2008

I Wouldnt waste my time with that. go with the 3g alt from a 94+ mustang. it is rated at 130 amps and will power anything you want. if that is not enough I believe the 6g from the 5.4's is 200 amps.
somone correct me if I am wrong.
any alt that you upgrade to will require new 4guage power wire w/fuse link from the alt to the starter relay and a 4guage ground wire to match it.

vikingpower · Jan 15, 2008

I bought a Powermaster from Summit, only lasted about 2 years. I probly put 10K miles on my car while that thing worked. Alternators are overrated anyways, unless you have a 4x4 with 30 Hella off road lights on it.

allballsmustang · Jan 16, 2008

the one for a 94-95 gt (the 130amp one) is the plug the same on the alternator?

stykthyn · Jan 16, 2008

yes, the plug is the same, but you will need to cut/cap the 2 black/orange wires.

do a search in the tech forum, this gets covered quite a bit.

5.0Droptop · Jan 16, 2008

allballsmustang said:
anyone use this summit 100amp alternator before:

http://store.summitracing.com/partdetail.asp?autofilter=1&part=SUM%2D810303P&N=700+4294925143+4294839060+4294880793+4294908331+4294908282+4294840126+4294924930+115&autoview=sku

just wondering if its a plug and play type deal or if i have to start upgrading wires? i wanna upgrade to an electric fan and i was hoping this will do the trick.

thanks
jim

Look at my thread.(link is below) there are pics etc there.
Theres also a link to a person on ebay that sells 200 amp alts for 136.99 shipped. It will handle anything you decide to do.

I have dual elec fans. The needle dosent even flench.

3 g conversion will require you to grind the alt bracket just a little bit to make room for the bigger body alt. It takes less than a miniute to grind it out. It will be obvious where to grind when you get the alt. The 3g bolts up the same as the stock one.
You will want to run a heavy guage wire from the alt charging lug to the solinoid or the battery.

I would also add a heavy duty ground wire as well.

The conversion is easy and its worth it.

http://forums.stangnet.com/showthread.php?t=733929

allballsmustang · Jan 17, 2008

ok i think i have things pretty well mapped out...i got a really good price on a 3g for a 94 and i have about 10 feet or so of 4gauge wire left over from an amp install. I may have to get a few connectors but thats no biggie. Oh, and for one last question, is it necessary to use a link or can i use a fuse holder, wouldnt' it be the same thing really? If so, what amperage? Thanks guys.

Jim

stykthyn · Jan 17, 2008

the holder would work thats what I use. I have a 100 amp fuse in mine and it hasnt popped.

allballsmustang · Jan 17, 2008

ok good thanks... when i get it all done i may even make a write up for it...i plan on doing my electric fan soon too... ill take some pics...

glowstang93 · Jan 17, 2008

I used switch to starter 4 ga cables when I did mine. Might be a little better than stereo wire. Can get different lengths from the parts store. If you need any help, lots have done the conversion and would be glad to help.

stykthyn · Jan 18, 2008

do a search in the tech forum. this has been covered in depth.
+1 on the starter cables. I wish I had seen those at the auto store before I hit up the sound shop for 12 feet of 4g stereo cables.

Topdowncruise · Jan 19, 2008

I heard PA Performance has good alternators...that's what I am planning to order.

5.0Droptop · Jan 19, 2008

Topdowncruise said:
I heard PA Performance has good alternators...that's what I am planning to order.

Mine crapped out on me, The PA 3g is nothing but a 130 amp alt. Its just a stock unit with a pa sticker on it.

I am real happy with the $136.00 200 amp one I bought on ebay.

glowstang93 · Jan 19, 2008

In makes sense to me to buy something that you can find at most parts stores. That is why I went with the 95 amp 3g from a Ford Econoline Van. I would have went with a 130, but my 4 cyl bracket was really in the way. With this one I can change it anywhere and be back on the road again. No waiting for the Big Brown Truck to arrive at my door.

Mustang5L5 · Jan 19, 2008

Topdowncruise said:
I heard PA Performance has good alternators...that's what I am planning to order.

It's just a stock alternator sold by them.

You still need to upgrade the wiring like a typical 3G conversion.

Anyone who swaps alts and doesn't use the 4G power wire is asking for trouble. The stock 10G wires will quickly burn up with serious amperage through them.

Besides, if you guys plan on running electric fans and maybe electric water pumps, you are going to want 130A alts. The stock 65/75 Amp alts just don't cut it

5.0Droptop · Jan 19, 2008

Mustang5L5 said:
It's just a stock alternator sold by them.

You still need to upgrade the wiring like a typical 3G conversion.

Anyone who swaps alts and doesn't use the 4G power wire is asking for trouble. The stock 10G wires will quickly burn up with serious amperage through them.

Besides, if you guys plan on running electric fans and maybe electric water pumps, you are going to want 130A alts. The stock 65/75 Amp alts just don't cut it

True, get a 130 amp minimum. Also what most people do not realize is that at the Alt there are 2 10g wires. If you cut the tape back youll find that about 8-10" down the 2 wires tie together into one 10g wire.

allballsmustang · Jan 19, 2008

well i got the alternator mounted up today...had to trim the bracket like everyone mentioned... i went to the car audio place the other day to get the fuse for the holder and the one that i had wasnt rated for the amperage...i decided to take a slightly different route...i got a car circuit breaker so ill never have to replace the fuse, not to mention it looks sweet...anyway i started running the wiring and im going to try and finish it up tomorrow...i just need to get one of those connectors for the stator wire cause its smaller than the normal ones...il try and get pics up soon...

jim

skunk21 · Jan 19, 2008

vikingpower said:
I bought a Powermaster from Summit, only lasted about 2 years. I probly put 10K miles on my car while that thing worked. Alternators are overrated anyways, unless you have a 4x4 with 30 Hella off road lights on it.

holycrap only 2yrs. those things go for $260. that sucks.

vikingpower · Jan 19, 2008

greensvt21 said:
holycrap only 2yrs. those things go for $260. that sucks.

I took it apart and the brushes/wiring/bearings were ok, looks like the regulator is bad. So hopefully its not a total loss if I can get it fixed.

canesstangnitro · Jan 19, 2008

I did the 3g pa upgrade and now the car won't start. after the alt went out I trickle charged the battery. I looked at the solenoid and put everything on the side it says but the car will not start. The fuel pump turns on and the radio and electric fan comes on but the car will not start. I made sure all of the wires on the alt are connected right. I bought the solenoid from napa so I wanted to know if the 2 spots where wires connect is the wrong way. Even with the power wire kit, everything should go on one side on the solenoid. the only wire that should be on the other side is the ground thick black wire right? I have everything else on the other side and the car does not start

alternator upgrade?

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I want to measure mine. It doesn't look that tall.

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...all those nights we shared, and you're a dude??

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That is…until I whipped out my Bissell

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