Can a 3g be damaging overkill?

Topic: Can a 3g be damaging overkill? (Read 18407 times) previous topic - next topic

Can a 3g be damaging overkill?

Reply #60 – September 25, 2007, 10:45:31 PM

Looks like a 10, why?

Can a 3g be damaging overkill?

Reply #61 – September 25, 2007, 10:48:26 PM

trust me bro,,,,,,,,,, You want to fuse ANY CIRCUIT at 80% max current.

so ,, what is 80% of 130? even a 120amp fuse is pushing the limit.
rule of thumb, fuse lower than the rated circuit draw. slap PA perfromance around then tell em to explain ohms law and how it applies to the product they supply.

Trust me,, YOU WANT that fuse to blow by the time its putting out 130 amps,, not 200. shesh and whats the tolerance on that lil fuse they gave ya? +- 20%,, or even better,,, its a slow blow 200amp:beatyoass:

I need a pic of the stock 88 alternator. I was just down at TC50's house and he has an 87 half motor and that alternator has an output stud and one small exciter plug. By comparrison, I was certain the 88 was wired with two plugs like the 3.8 and the 5.0.

Can a 3g be damaging overkill?

Reply #62 – September 25, 2007, 10:52:52 PM

Was your old alternator configured like the "BEFORE" drawing illustrated from the sticky?
IIRC, i think you said your old alternator had one plug and one stud.
just curious.

Can a 3g be damaging overkill?

Reply #63 – September 25, 2007, 11:35:14 PM

Quote from: booksix;178715

Looks like a 10, why?

It just means my "what I would do if the shunt was 4 GA or larger" thing won't work.

Can a 3g be damaging overkill?

Reply #64 – September 25, 2007, 11:43:21 PM

Fuses will eventually fail when run at thier rating repeatedly/for an extended period of time. General rule of thumb is max. current * 1.2 to 1.3 in my industry (power supply).

Can a 3g be damaging overkill?

Reply #65 – September 26, 2007, 12:08:05 AM

Here's the alt. Bad pics but good enough to see the D-shaped plug and the stud below. As for the config, NO, not like the before because I don't have that many plugs... My diagrams suck (quickies) but MY before and a planned after are below (next reply)...

Can a 3g be damaging overkill?

Reply #66 – September 26, 2007, 12:12:28 AM

Here they are. Only thing I think I'm still missing is the extra wiring Jeff included to retain the "functionality" (or lack there of) af the dash gauge... Just don't entirely understand where he ran it...

Can a 3g be damaging overkill?

Reply #67 – September 26, 2007, 12:37:10 AM

Ok, so my other problem is this fuse. PA Performance seems to think this 200 amp is right... I also just bought the fuse block and fuse from them along with my stator plug and a few other odds and ends on 2nd day air because I have to get this thing working by the end of tomorrow (I get the parts tomorrow). But now I need to find a new fuse (preferably one that will fit that fuse block) but idk where to go. I checked radio shack, frys, best buy, circuit city... idk, I'm sure I can go to a custom car audio shop... I'm just irritated! How can PA be so clueless if this fuse really performs as a 200 amp?

good vent session...

Can a 3g be damaging overkill?

Reply #68 – September 26, 2007, 12:44:19 AM

So confused! Even "Mustang Monthly" used their kit and did a write up... 200 amp fuse and all. Not that I doubt anyone because it's pretty self-explanitory anyway... but how did they miss it (or are they just a bunch of tools with a magazine?)

http://www.mustangmonthly.com/howto/26599/photo_16.html

Ok, I need to go to bed before I go more crazy talking to myself! Thanks all for the help...

Can a 3g be damaging overkill?

Reply #69 – September 26, 2007, 12:58:32 AM

Quote from: Cougar5.0;178723

Fuses will eventually fail when run at thier rating repeatedly/for an extended period of time. General rule of thumb is max. current * 1.2 to 1.3 in my industry (power supply).

from a design standpoint such as how a piece of equipment is manufactured to "supply" power that would be a true statement. IE- the power company will design systems with that thought process just as the components in the alternator are made like that as well since in this case the alternator is the power company.
Same goes true for household breakers with the same thought process but not nearly as drastic as 1.3 but close.

on the user end,, such as "recieve" current, its the opposite. His starter, headlamps, wiring ect ect are the "user". Another example of the far end ampacity would be the fuse found in a power supply of a computer. rather small if you do the math given to you on the power supply case sticker.

this is a judgment call on the safe side and a prudent one at that.

upsizing a fuse is never a fix, it just allows things to melt on the energy consumption side.

Can a 3g be damaging overkill?

Reply #70 – September 26, 2007, 01:05:45 AM

Quote from: booksix;178733

So confused! Even "Mustang Monthly" used their kit and did a write up... 200 amp fuse and all. Not that I doubt anyone because it's pretty self-explanitory anyway... but how did they miss it (or are they just a bunch of tools with a magazine?)

http://www.mustangmonthly.com/howto/26599/photo_16.html

Ok, I need to go to bed before I go more crazy talking to myself! Thanks all for the help...

there is nothing wrong with using the 200A fuse ---->>>> if there is no antipated problem. I just want you to know that if there is a problem,, smoke will steam out from various wiring before the fuse ever blows. Im not gonna bust on anyone on that site, they probably feel like it works out best. whatcha gotta ask your self is this........."do you feel lucky"

whatcha really aught to do for test purposes is to tie in a circuit breaker on the output of the alt. just head over to an electrical supply joint and pic out a DC breaker that has two threaded studs on it. In all honesty, some of the real huge fuses are rated for a high enough amperage to handle what your doing. Its just a pain if you keep blowing fuses. Just get a breaker for now about 60-70amps (or lower is my best suggestion). atleast then you can reset it. The bonus is that you know if the project is a sucess without having burnt up wriing. Honestly, id start out with a 30 or 40 amp breaker. It just makes better sense for testing out things. keep all accessories off to keep the load low. then you can bring various features on line slowly for test purposes. Once you know the breaker does not trip, you can make it perm or wire in the fuse. I like breakers myself.

now leme look at what you drew up there.

Can a 3g be damaging overkill?

Reply #71 – September 26, 2007, 01:24:00 AM

Quote from: booksix;178729

Here they are. Only thing I think I'm still missing is the extra wiring Jeff included to retain the "functionality" (or lack there of) af the dash gauge... Just don't entirely understand where he ran it...

man, this seem like a flashback to a few weeks ago. The other guy also had the same problem with the meter wiring. He ended up wiring everything out except the meter wiring and the harness smoke checked,,,,,,,,,,,,,,,,,on its own,,,,,,while he was napping.
wiring everything out except the meter wiring seems pretty cut and dry to me but still his smoke checked.

I still dont think your 88 configuration is an actual 88. I think its been modified for the 87 layout. Are you sure thats an 88? positive? dont let bolt on body parts fool you, verify the vin.

Can a 3g be damaging overkill?

Reply #72 – September 26, 2007, 01:37:36 AM

Quote from: Thunder Chicken;178498

I have Mitchell on demand in my lap. It's on the laptop computer. I also have two 1987 EVTM's and a 1988 EVTM. My Mitchell diagrams show three wires at the alt: black/orange (output), yellow/white (A terminal, hot at all times), and light green/red (I terminal, hot when ign in RUN). Dunno what the EVTM's show as they're out in the garage
.

can you put up the 88 tc charge distribtion?

Can a 3g be damaging overkill?

Reply #73 – September 26, 2007, 02:00:26 AM

oh gezzz, i think i just fixed your problem dood. I feel like an idiot.

stop and think about this for a moment. You just might want to finish that ho conversion and all your problems will go away and the sticky will apply to your car. Im not really sure why i just noticed but your runnin an HO 5.0. ,, not a tc half motor. This is my fault for not paying attention to your very first post or i would have said all this from the beginning as it would have been the proper response and imho, the best and only option for your betterment in the future.

Go get the engine harness and finish up the project.

what you have now....

an 88TC
converted to 5.0HO
with an 87 alt wiring configuration.

the three are too darn difficult for me to jump between and figure out heads or tails on.

While looking closer at post 58, i scrolled up to see post 57 and just bout ped myself when i saw that big fat HO bling in the background.

Just finish up the wire project with a simple harness install and be done with it. It needs done anyway and you know it. Theres no sense in taking a risk like this on three mix matched configurations but thats just my opinion.

What triggered me was when you mentioned a certain "yellow" wire that ties into the "blue" fuse link and mentioned the solenoid. sounded so much like and verifies out as "87 application".

Can a 3g be damaging overkill?

Reply #74 – September 26, 2007, 10:16:52 AM

I don't understand what makes you think it's unfinished? I have one of the most complete 5.0 conversions I've found... Lots of other people I've found throw codes and ignore them/bypass them. My setup is wired right (99% complete I'd say) and works great!

And I'm sure it's an 88... body parts don't fool me on this car because, although I LOVE TC's, somehow I still never figured out how to tell 87 from 88 on the outside. Anyway, the car was built 01/88. Also, why would you think this is an 87 charge setup? If you're certain the 87's had the one plug + stud (almost just like a 3g) then why would Ford take a step back and go to the alt as in the diagram in 88? And not only that, but the guy I bought the car from was the original owner and definitely was NOT the type to modify anything on his car (didn't care/no automotive abilities).

Anyway: COFFEE to wake up and deal with all this confusion! :hick: then car...