Alternator pulley help
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Alternator pulley help
Hello everybody, I've upgraded my Excursion with the 140 amp alternator, new batterys, heavy charge wires and extra grounds but it still will run down the batterys on short runs. So my plan is to try the smaller 58mm alternator pulley to give it a little extra charge on short runs. My parts guy is having trouble finding one and he asked me what year make model one of these pulleys may have come on. Does anybody know what he could look up? I give him the pulley dimensions but it didn't help him. Thanks in advance.
Hotshot
Joined: Dec 2014
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From: Jersey Shore
This is what I have recommended for this side of the border, but Canadian shipping hurts.
http://www.ebay.com/itm/OVERDRIVE-8-GROOVE-PULLEY-Gain-output-idle-in-some-apps-FORD-ALTERNATOR-6g-3g-/142185472052?hash=item211aea2034
Depending on the shortness of the trips 140a might not cut it, but the batteries will only except so much current, less so when they are cold. Cables don't help any of that.
http://www.ebay.com/itm/OVERDRIVE-8-GROOVE-PULLEY-Gain-output-idle-in-some-apps-FORD-ALTERNATOR-6g-3g-/142185472052?hash=item211aea2034
Depending on the shortness of the trips 140a might not cut it, but the batteries will only except so much current, less so when they are cold. Cables don't help any of that.
Thread Starter
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Battery drain is the glow plugs. The voltage comes back up pretty quick but not quite as fast as I'd like.
Postmaster
Joined: Aug 2015
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From: NW IA
Jack, somewhere I read you can get an oversized pulley for the stock 110A......any ideas?
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Fleet Mechanic
Joined: Jan 2012
Posts: 1,668
Likes: 13
From: Saskatchewan
Yes that is my concern also that's why I'm looking for a overdrive pulley. Im hoping to bring my battery's up to a full charge quicker. They charge up great on anything longer than say 15-20min drive. Anyway I was hoping I could tell him that this particular pulley came on say a 94 F150 or something like that but if not I'll just order that one from eBay. Thanks for the help.
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Fleet Mechanic
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Postmaster
Joined: Aug 2015
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From: NW IA
Yes that is my concern also that's why I'm looking for a overdrive pulley. Im hoping to bring my battery's up to a full charge quicker. They charge up great on anything longer than say 15-20min drive. Anyway I was hoping I could tell him that this particular pulley came on say a 94 F150 or something like that but if not I'll just order that one from eBay. Thanks for the help.
I still think that is an issue, maybe I am full of it.
Hotshot
Joined: Dec 2014
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Likes: 3,138
From: Jersey Shore
If you meant undersize, the link I posted works with all the alternators that fit on the 6.0.
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Fleet Mechanic
Joined: Jan 2012
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From: Saskatchewan
Never dead but say if I run my son to hockey practice a few times which is like a 5min drive a notice it doesn't crank as good. Especially when it's cold out. Let it idle for 20 or take it for a good run and it charges right up. Alternator is a new Bosch 140 and battery's are new red top optimas.
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Fleet Mechanic
Joined: Jan 2012
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From: Saskatchewan
Yes I've been doing this but to be honest it's a pain. I'd rather fix it right.
Hotshot
Joined: Dec 2014
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Likes: 3,138
From: Jersey Shore
Never dead but say if I run my son to hockey practice a few times which is like a 5min drive a notice it doesn't crank as good. Especially when it's cold out. Let it idle for 20 or take it for a good run and it charges right up. Alternator is a new Bosch 140 and battery's are new red top optimas.
It takes about 10 minutes for a 140a to get the batts close to full up. You can shorten that with a 230a or so, getting more amps into the batteries during the 90 second glow plug engagement, but the battery acceptance rate still is the restriction. It's an expensive way for only a little time improvement. AGMs accept charge at a faster rate with their lower internal resistance, but then again it's price vs benefit. Sometime the inconvence of a plug in is just more cost effective.
This is another cheap source with a wide range of pulley options.
Ford alternator pulleys Alternator Parts - Starter Parts - Repair kits