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1965 327 alternator options |
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a075923
AMC Apprentice Joined: Feb/04/2018 Location: kansas Status: Offline Points: 139 |
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Posted: Nov/28/2018 at 11:06am |
Hi Got my starter and fuel pump rebuilt, now on to the alternator.....my 287 has a Motorola 35 amp and the 327 I bought to rebuild (in DeSoto, MO now at A&K Machine shop) to my surprise had a Delco on it. The alternator bracket has a tag screwed to it, not tried cleaning it up yet to see what is stamped on it. Everything I've read makes me think the 327 should be a Motorola too, likely bigger than 35 amp as it had A/C. Any thoughts? Edited by a075923 - Nov/28/2018 at 11:11am |
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ramblinrev
Moderator Group Joined: Dec/28/2008 Location: Wisconsin Status: Offline Points: 11543 |
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You should be able to find a 55 amp Motorola for your Ambo. The Delco is one someone added to it. If it works that's fine! |
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74 Hornet Hatchback X twins (since 1977)
62 American Convertible (still worth the $50 I spent in 1973!) AMCRC #513, AMO #384 70 AMX 360 4-speed (since 1981) |
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sixbangr
AMC Nut Joined: May/01/2010 Location: Sparks,NV Status: Offline Points: 356 |
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where did you get the fuel pump rebuilt?
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past owner of 19 Ramblers/AMC's
US NAVY '66-'70 |
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a075923
AMC Apprentice Joined: Feb/04/2018 Location: kansas Status: Offline Points: 139 |
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Arthur Gould Rebuilders | 789 Wachusett St., Holden, MA 01520 | 508-210-0891
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sixbangr
AMC Nut Joined: May/01/2010 Location: Sparks,NV Status: Offline Points: 356 |
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thanks
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past owner of 19 Ramblers/AMC's
US NAVY '66-'70 |
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FSJunkie
AMC Addicted Joined: Jan/09/2011 Location: Flagstaff, AZ Status: Offline Points: 4742 |
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Air conditioning cars received a 40 amp alternator over the standard 35 amp alternator.
The A/C blower motor draws the same amount of current as the heater blower motor and the A/C compressor clutch only draws 2 amps when it is engaged. In other words, A/C on max only uses 2 amps more than the heater on max. That is why the alternator on A/C cars I only 5 amps higher in rating. That is all you need. A 55 amp alternator was optional as a heavy duty item. All three alternators do not charge well at idle speeds because the 327 idles so slow. The headlights will dim at idle, especially if the blower motor is running too. It won't cause excessive discharging of the batter unless you sit there and idle for a very long time. Like...hours. It's different than we are used to on newer cars but it's nothing to be worried about. It's still charging at idle better than if it had a generator and cars ran fine with generators for many decades. |
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1955 Packard
1966 Marlin 1972 Wagoneer 1973 Ambassador 1977 Hornet 1982 Concord D/L 1984 Eagle Limited |
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vinny
Supporter of TheAMCForum Joined: Jan/05/2012 Location: Calgary Status: Offline Points: 2837 |
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If you have an old Delco 10si on it now then this CS130 would fit in its place. I have one on my 64 Rambler that am very happy with. It charges better at low RPM's. 89 Pontiac Safaris, among some others, are good donors because the alternator comes with a V pulley rather than the serpentine type.
I've got nothing against the Motorola's except that some complain they can't get a regulator that will last and for the two the cost is higher than using a one piece unit. For originality stay away from the newer stuff. I don't think Delco 10si is original, however I did see one with the base factory cut down to 1" that was installed on a Jeep.
Edited by vinny - Nov/30/2018 at 10:54am |
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Bruce Clarkson
AMC Addicted Joined: Feb/09/2013 Location: New Bern, NC Status: Offline Points: 538 |
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Re the regulator: Just sharing a bit of personal trauma. I've got the 40 Amp (it's actually a little less than that) setup in a 67 Ambo with 343. I too had a big problem with the regulator. It turns out that the regulator ground is through the wiring harness and not via the case. Yup, you can see that in the wiring diagram. The reason it's worth mentioning is that the press-on terminal for the ground at the back of the alternator for the factory harness gets tired. I'm not completely sure why but if the regulator is not grounded correctly for about a nanosecond (don't really know how long but darn short), then it fries. I was checking all the connections, replacing regulators, but during actual driving there was the occasional vibration that seemed to caused the ground to open. I cut off the end of the harness at the alternator, crimped on eye-type fittings, securely tightened them including a star lock washer and no further regulator problems.
Of course, "your mileage may vary." So with that fix, my rebuilt original Moto alternator was fine (so long as you understand how small it is and just accept that things look a little dimmer at night, A/C on, at an idle). Good luck, Bruce Clarkson
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Bruce Clarkson
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