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Topic: Can a 3g be damaging overkill? (Read 18305 times) previous topic - next topic

Can a 3g be damaging overkill?

Reply #75 –
Just to be clear after reading your response again:

Took my 88 TC.  Stripped the motor and engine/ecu harness, kept the chassis harness which included all the alternator wiring.  Added the 89 mustang ecu harness/computer and a few other necessary things (ie: fuel pump relay circuit)...
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can a 3g be damaging overkill?

Reply #76 –
Quote from: jcassity;178716
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:

Actually, Scott, you want to fuse a circuit at 120% of its intended max current. You fuse the WIRE at 80%. You then choose the wire so that at 80% of its capacity it's capable of carrying 100% of the antited load. That gives you a cushion that allows the circuit to pull as much current as designed (no point in running a 130-amp alt if you're only gonna allow 90 amps through) plus allowances for temporary surges (think fan motors starting), while not maxing out the wire.
2015 Mustang GT Premium - 5.0, 6-speed, Guard Green - too much awesome for one car

1988 5.0 Thunderbird :birdsmily: SOLD SEPT 11 2010: TC front clip/hood ♣ Body & paint completed Oct 2007 ♣ 3.55 TC rear end and front brakes ♣ TC interior ♣ CHE rear control arms (adjustable lowers) ♣ 2001 Bullitt springs ♣ Energy suspension poly busings ♣ Kenne Brown subframe connectors ♣ CWE engine mounts ♣ Thundercat sequential turn signals ♣ Explorer overhead console (temp/compass display) ♣ 2.25" off-road dual exhaust ♣ T-5 transmission swap completed Jan 2009 ♣

Can a 3g be damaging overkill?

Reply #77 –
But either way the 200 is too big, right?  Dang, I wish I knew more in depth electrical stuff!!!  :hick:
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can a 3g be damaging overkill?

Reply #78 –
Quote from: booksix;178778
I wish I knew more in depth electrical stuff!!!  :hick:

I wish Mustang Monthly did too. ;)

Can a 3g be damaging overkill?

Reply #79 –
Ahahahaha!!  I know right!
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can a 3g be damaging overkill?

Reply #80 –
Oh and one more thing Scott... I don't want to skip the meter wiring...  just didn't put it on my diagram because I don't know how to do it yet...  so my "after" is still just a "planned so far" after diagram...
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can a 3g be damaging overkill?

Reply #81 –
Ok, Scott and I discussed my plan of attack...  I'll explain in a bit but here's where I'm at:  Took the old wiring, repinned following Jeff Korn's instrustions (ylw/wht to A, Black to S and stator and grn/rd to I).  Here's the before and after plugs:  Note the black and green/rd wires have switched places/letters - per Jeff's instructions...
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can a 3g be damaging overkill?

Reply #82 –
here is a pic of a decent breaker although there are cheaper ones to be had.  I wish i knew of a vendor for a cheaper brand.  DC breakers are not ordinary but carried by electrical supply shops.

Can a 3g be damaging overkill?

Reply #83 –
Quote from: booksix;178784
because I don't know how to do it yet...


that would make two of us:D

Can a 3g be damaging overkill?

Reply #84 –
Waytek Wire has a decent selection of automotive circuit breakers, if that is the route you want to take. $5 charge for orders under $35.

Catalog

Can a 3g be damaging overkill?

Reply #85 –
i have a few here at the house up to 800amp. the one in the pic is 30A.  I could slush you one if you need.  It just delays the project for you.
State electric, grainger or graybar alike carry them.

Can a 3g be damaging overkill?

Reply #86 –
Ok, as I explained to Scott, my first attempt would retain the stock wiring to the shunt (yellow all the way from the exciter plug to the shunt) and the blk/or from the alt output to the OTHER side of the shunt...  I figured this circuit should work the same, 3g or not...  Only difference is I brought the blk/or from the alt fuse (great idea Scott).  I also added a 5 amp fuse to the yellow white per Scott's instructions (just in case).  So here's the before and after diagrams again.  First test came up with:

battery: 12.27v
battery, car running: 14.7v
battery again, car off: 12.7x?
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can a 3g be damaging overkill?

Reply #87 –
ok everyone,, tom just set me straight.  Ive been bass akwards on what is what.

The 87 and down TC has the alterntor connections like that of the 5.0 and 3.8.

The 88 has a stud output.  so..... this car is configured correctly.

Can a 3g be damaging overkill?

Reply #88 –
LOL, ok...  that's straightens out the confusion...  anyway, anyone see any problems with my "final" diagram?  and for your viewing pleasure...  my safety:  :hick:
1988 Thunderbird Turbo Coupe
'89 5.0 w/ ported intakes, Mallory Adjustable FPR, BBK shorties and H with 2.5" Flows, 130 amp 3G, 89 Mustang comp/wiring, Aluminum radiator w/ elec fan, T5 trans, King Cobra clutch, 3.55 gears, 13" Cobra brakes (front), Wilwood prop valve, Mustang A-arms, Front Coil-overs, MM CC plates, Silver 17x9 R's, 03 Cobra IRS, Aluminum DS, 2002 Mustang dash/console etc..., custom leather seats

Can a 3g be damaging overkill?

Reply #89 –
:rollin: :bowdown:

your a rocket scientist!

the suspense is killing me.. get er done already.