Upgrading Charging Wires?
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
I'm sorry.
No don't have one, I don't think Ryan has one either since his product is geared toward Mustangs.
I agree that it should be simple to wire a shunt, but the amperages the 3G's put out are double the current of the 2G's.
I'm fortunate that my later ('87) has a voltmeter instead of an ammeter.
No don't have one, I don't think Ryan has one either since his product is geared toward Mustangs.
I agree that it should be simple to wire a shunt, but the amperages the 3G's put out are double the current of the 2G's.
I'm fortunate that my later ('87) has a voltmeter instead of an ammeter.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
That would mean you would want to shunt half as much to the gauge as is now for it to read the same.
Hmmm, it's indeed fortunate that 87's got voltmeters, as this conversion creates a problem with us ammeter folks if we want to keep the ammeter...
Hmmm, it's indeed fortunate that 87's got voltmeters, as this conversion creates a problem with us ammeter folks if we want to keep the ammeter...
Old School Hot Rodder
Joined: Feb 2006
Posts: 6,472
Likes: 11
From: Exmore, VA
Upgrading Charging Wires?
Well, I was going to upload the diagram, but we're back to uploading issues again. If you need it PM me with and email address.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
Okay Bruno,
I just managed to get a few shots before it got dark.
There really is no good way to get a pic of the alternator with all the emissions controls in the way.
If there's a particular view you need just let me know.
http://www.flickr.com/photos/24183730@N03/6372083715/http://www.flickr.com/photos/24183730@N03/6372083715/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372098605/http://www.flickr.com/photos/24183730@N03/6372098605/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372104457/http://www.flickr.com/photos/24183730@N03/6372104457/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372112377/http://www.flickr.com/photos/24183730@N03/6372112377/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372127717/http://www.flickr.com/photos/24183730@N03/6372127717/ by http://www.flickr.com/people/24183730@N03/, on Flickr
I just managed to get a few shots before it got dark.
There really is no good way to get a pic of the alternator with all the emissions controls in the way.
If there's a particular view you need just let me know.
http://www.flickr.com/photos/24183730@N03/6372083715/http://www.flickr.com/photos/24183730@N03/6372083715/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372098605/http://www.flickr.com/photos/24183730@N03/6372098605/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372104457/http://www.flickr.com/photos/24183730@N03/6372104457/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372112377/http://www.flickr.com/photos/24183730@N03/6372112377/ by http://www.flickr.com/people/24183730@N03/, on Flickr
http://www.flickr.com/photos/24183730@N03/6372127717/http://www.flickr.com/photos/24183730@N03/6372127717/ by http://www.flickr.com/people/24183730@N03/, on Flickr
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Postmaster
Joined: Nov 2009
Posts: 4,575
Likes: 5
From: Broken Arrow , OK
Great pics Jim!
Now I am having trouble getting the belts to line up. My alt doesnt jive with the balancer pulley since I did the 3G install. I got the big case 3G. It looks like it is almost a couple of inches from being where it needs to be. The alt is too far forward now. Has anybody run into this before?
Now I am having trouble getting the belts to line up. My alt doesnt jive with the balancer pulley since I did the 3G install. I got the big case 3G. It looks like it is almost a couple of inches from being where it needs to be. The alt is too far forward now. Has anybody run into this before?
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
I haven't.
On my install I needed to change the offset in the adjuster arm but the pivot end in the bottom of the smog pump bracket had the alternator lined up with my crankshaft pulley.
I put a thin shim washer behind my V-belt pulley so that it did not rub on the 3G case.
What does the front dress look like on your engine?
On my install I needed to change the offset in the adjuster arm but the pivot end in the bottom of the smog pump bracket had the alternator lined up with my crankshaft pulley.
I put a thin shim washer behind my V-belt pulley so that it did not rub on the 3G case.
What does the front dress look like on your engine?
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
Oh, One other thing...
Do you have the white/black wire going from the 'S' terminal to your choke on the 4180?
You're going to lose this and need to find another source of reduced voltage, or swap choke elements for the regular 12V Holley 45-258.
Do you have the white/black wire going from the 'S' terminal to your choke on the 4180?
You're going to lose this and need to find another source of reduced voltage, or swap choke elements for the regular 12V Holley 45-258.
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pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
I chose to use a resistor wire from a spare harness to power mine.
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Postmaster
Joined: Nov 2009
Posts: 4,575
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From: Broken Arrow , OK
The stator wire was already tapped into on my original set up. I just re worked the joint and used it that way. I hope its the reduced voltage. I have an Edelbrock 1406 carb, but , it still has the electric choke with a 1/4" spade terminal.
Post Fiend
Joined: Jul 2004
Posts: 8,786
Likes: 28
From: Northern California
Ammeter design : DC METERING CIRCUITS
Without the shunt you will lose your ammeter gauge.
You can buy shunts for this purpose that splice in as well.
http://www.calibex.com/Ammeter-Shunts/zzcalibex2zB1z0--search-html?nxtg=2430a1c0504-E8FF95D64F743AD7
Posting Guru
Joined: Jul 2010
Posts: 1,154
Likes: 2
From: Marysville, WA
Great. So can we add a shunt and any speculation on what size shunt for each alternator? 95A, 135A, etc.
I do have a Autometer voltmeter sitting on the bench but would prefer all the factory gages work.
I do have a Autometer voltmeter sitting on the bench but would prefer all the factory gages work.
pedant
Joined: Jan 2008
Posts: 23,576
Likes: 39
From: EXTREME southwest CT
I see this one in the link
Overton's® > Blue Sea DC Current Shunt 200A/50mV Analog - Boating & Marine > Boat Covers > Custom & Semi Custom Boat Covers : Custom Boat Covers, Semi-Custom Boat Covers, Universal Boat Covers
It's rated at 200A and not recommended to see more than 66% of that for continuous duty. (132A)
Or do you need to size one for the draw of the truck and not the maximum output of the alternator?
Overton's® > Blue Sea DC Current Shunt 200A/50mV Analog - Boating & Marine > Boat Covers > Custom & Semi Custom Boat Covers : Custom Boat Covers, Semi-Custom Boat Covers, Universal Boat Covers
It's rated at 200A and not recommended to see more than 66% of that for continuous duty. (132A)
Or do you need to size one for the draw of the truck and not the maximum output of the alternator?