Thanks a lot. I’ll check these links out!I can't give you a direct comparison between the 2g and 3g, but I swapped from a 1g to a 3g into my Cobra II and it's been a wonderful upgrade. The old 1g just couldn't keep up with the addition of fuel injection, the required electric fuel pump, electric fan, and an AF gauge. If your car is basically stock - and you're looking to keep it that way - a 3g would be plenty. But you'll need to buy the necessary pieces to install it correctly. There are quite a few threads I've found just doing a quick Google search; here's a few on Motor Trend's site alone.
And here's my thread when I swapped one into my II:
So I installed a 3G alternator in my car today. The original plan was to use a 3G alternator that I had when I got some parts for the GT. When I went to re-clock the alternator so the plug was pointing the right way, the damned casing come apart too far and broke one of the two brushes in the housing which necessitated a new one. After having to make a run to O'Reilly's and Autozone for some 4 gage cable, ring connectors, a 175 amp Mega Fuse, and the new alternator, then a second trip out to the Depot for some miscellaneous bolts, it's in the car. And it works. BUT...... the voltage jumps...
- LILCBRA
- Replies: 23
- Forum: 1974 - 1978 Mustang II Talk & Tech
Thanks a lot bro. You pretty much told me what I was looking for.Is this you?
Here's really the only thing I can share in comparison to the 2g. I had one in an engine swap I did in my old 84 vert. They alternator locked up on me while driving down the highway. If you read through my thread, someone (I can't recall who atm....) said that they're biggest problem was that they were barely putting out adequate amperage for the car at the time. So once you add a bigger draw - i.e. a stereo with a big amp - the alternator wouldn't keep up.
To understand the charging system takes at least a basic understanding of the concepts of electricity. I'm by no means an expert, and I'll probably screw this up, but I'll give my shot at explaining what I know. Try to equate this to water. You have volts, amps, and ohms. Volts is the amount of water, amps is how much pressure the water is giving, and ohms is resistance - i.e. a straw. All alternators put out roughly the same amount of volts (water), but as time has progressed, more systems need the same required amount of water, thereby needing an increase in pressure to supply them. Where ohms/resistance comes in is when you have a bottleneck, such as how much pressure a certain piece of equipment needs or how small of a wire you're trying to feed that piece of equipment to. This is why you'll want a heavier gage wire for things that take a lot of amperage, so that wire doesn't impede the flow of volts. So, by upgrading from, let's say a 65 amp alternator to, say, a 95 amp alternator, you're ensuring there will be enough pressure (amps) to feed all of your bottlenecks so they all have the adequate amount of volts.
Hopefully this makes sense and helps steer you in a good direction. I'll let whomever wants to correct me and/or re-explain if it doesn't make sense.
Best of luck my friend!
Sir, I apologize if i offended you, but I have no idea of your background. I’m just looking for anyone to explain the differences in these things and the pros and cons. I’m literally looking for someone to educate me on this, that’s all. I dont know why I would use the one you suggested, that was the whole point of my post. Just trying to learn all this where I can start doing all my own maintenance because its almost impossible to find anyone to work on these older cars
Thanks for that, I’ll definitely add it to my list. I do have a sizable amp and two kickass sundowner 10’s that fill up my trunk. Man, I’m 52, graduated in 91 and I got the car I always wanted but couldn’t afford until I ran across this gem two years ago. Yeah, I’m making it just like I would have back then, but better. I’m really thinking a lot of my codes will go away with a new bigger alternator and voltage regulator. It runs fantastic, but the battery doesn’t charge well enough just cranking it once a week and letting it idle. It definitely needs more juiceMy Opinion, I'm not a trained tech but just have 'old guy' experience, if the ride is stock, you will not be adding any Christmas lights, police siren or boom'n stereo leave it alone.
Yes, the charging system is barely able to keep up stock but it does keep up.
Keep a good battery and clean connections and you'll be trouble free for years.
We have a tech/how to forum here too.
If anything should be updated it would be the battery cables (+ and - ) and the starter cable, just one size larger will do, I do this on all my 'hot rods'.Guys, if "that should be a sticky," then please reply to this thread with the link to your suggestion and why you think it should be added.
How to determine if a thread should be included:
- Does the topic address a common fox 5.0 owner's needs? / Is it a frequently asked question? / Is it frequently searched?
- Does the thread contain extremely useful information that should be highlighted?
- Is the topic thoroughly addressed in the threads already listed below? (consider adding the info to such threads, or asking a moderator to merge them)
Thanks,
- FastDriver...
- FastDriver
- fox body mustang technical index troubleshoot
- Replies: 1
- Forum: Fox 5.0 Mustang Tech
I documented this in my adventure with fix'n stuff on the Junk Pyle.
Link at the bottom of my post.
If it's still there
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