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Alternator recomendation |
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AgentCooper 
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Joined: 21-April-2017 Location: Chile Status: Offline Points: 82 |
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 Topic: Alternator recomendationPosted: 12-September-2021 at 10:19AM |
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Hello... Which alternator should I buy for my Gran Torino 1975 (351W)?
When I search in autokrafters, appears that this one: link exact fits. I know that these "fits" are not always 100% correct, so, should I buy this? is there other better option? I also found this one: EBAY Which is much less expensive... Which one do you recommend? |
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Steve M.
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Joined: 08-June-2019 Location: Florida Status: Offline Points: 1756 |
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Posted: 12-September-2021 at 11:38AM |
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I have great luck with NAPA. I brought my old one in and made sure it matched up. Its a bit more money however the trouble it saves is worth it.
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Steve M.
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californiajohnny
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Joined: 05-October-2013 Location: winlock, wa Status: Offline Points: 14609 |
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Posted: 13-September-2021 at 6:03AM |
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steve,he's in south america.... i don't think they have a napa store down there?
this one looks correct ... note the terminal connections on the back... https://www.ebay.com/itm/324359713896?_trkparms=amclksrc%3DITM%26aid%3D1110006%26algo%3DHOMESPLICE.SIM%26ao%3D1%26asc%3D234204%26meid%3D48984da673da4e07bb487d43d941ce6c%26pid%3D101195%26rk%3D2%26rkt%3D12%26sd%3D372655945098%26itm%3D324359713896%26pmt%3D1%26noa%3D0%26pg%3D2047675%26algv%3DSimplAMLv9PairwiseWithPLXWebKnnNlpV3Recall&_trksid=p2047675.c101195.m1851&amdata=cksum%3A32435971389648984da673da4e07bb487d43d941ce6c%7Cenc%3AAQAGAAACEKdY2rp2ph6%252FL0vgvt0BN0NZgl5mZsfQGVMPX8dKGA4TBDcbOwv%252BTSw6SODSbxcHj0e%252B%252FXWdlKWd2HME%252FLr27uJjR9Fztax2iozxjipPDB%252BmIMadrwKakJ8CF5PLgXzTAcKO7kGXkXqx2HF%252Fl0rESAZJO7VVtWEfw4hHj8KVq5mQ1ez3M7pPCVEq5%252BLSajsWMnuS4EPyN7J6SK4tGk1RrcdENT4wvjljAj0VgUW9BpN8vY5pAPMzBBFwUDMNiiwMUCO0Jkj7FuYvXMbNaUNf0c2iNA4o4SUZlYS0XUUL%252BUprtjyCQRG2%252BPlgrmeO534I7IRQBY9Aayga3YlWlNLfEbSyivQ0LS%252BWxHw8WULad5nnPRRcxvvQGQr7H58nIY0KF5U4CtzCRA2tkXXJ9pw9Df1uzTw0f%252FaRrcC175Jv4GCBYxaouIsBgPWpZjlVDZoLPLQ3farMPXYvA0AqmZAUCwFz0lLqekzcuD9qFQ1izKuT%252BJ0Z6Jdg0t7XZyxj%252FSqPGi%252B1gSyEm0IecMk6r6jOuQ5%252BWePm4oPY6ueMqBLotUh2u26ZJyJpJB%252FhntR455xx7QGXj0299SkpbVjCs9jAXAdf59WG6vuxeUIPKgkuJfFANHwajSfJ3efmRAknisgSybGkWZ498%252Bu25vUBle%252F2T0po0YwRQlJo3wu9SmFKXyLycnTmuhOmM4GlCj1ffHZm5Q%253D%253D%7Campid%3APL_CLK%7Cclp%3A2047675 Edited by californiajohnny - 13-September-2021 at 6:11AM |
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JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
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72FordGTS
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GTS.org Admin Joined: 06-September-2005 Location: Ontario, Canada Status: Offline Points: 5846 |
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Posted: 13-September-2021 at 8:51AM |
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Do you know if the alternator in your car is a side terminal or rear terminal? There were several alternators used depending on the options. RockAuto or Summit Racing are good for international shipments and both should have something that will work in your car.
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Vince
1972 Ford GTS Sportsroof - Survivor, One Family car GTS.org Admin |
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Steve M.
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Posted: 13-September-2021 at 10:56AM |
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I never put that together. I must be getting old.
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Steve M.
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AgentCooper
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Posted: 14-September-2021 at 12:42PM |
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Thanks to all of you.
That is right, I am in South America. Actually, it looks that there is a Napa store here, but no in my city, at least is less than 1000km away. This is the actual alternator that is in the car:  Johnny, your proposal is 65 amp, is that enough for the car? I think my battery is 80ah, this is too much? could this be a reason why the alternator failed? Edited by AgentCooper - 15-September-2021 at 5:49AM |
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72 RS 351
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Joined: 04-September-2014 Location: Knoxville TN Status: Offline Points: 2767 |
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Posted: 14-September-2021 at 1:05PM |
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The stock alternator was probably a 55 amp unit. If you haven't added a lot of new items like a big stereo, the 65a should be plenty. Those can also be upgraded to 80 amps with an aftermarket stator made for them. I did that in 1981 with my 72 GT, at a local alternator shop.
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Don
73 Ranchero "Sport 72 front end", floor shift/console, planning EFI 7000+ rpm 351-4V &4R70W 73 Ranchero GT 351C-4V &4R70W for sale later. 92 Lincoln Mark VII SE GTC, OBDII 347/4R70W |
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AgentCooper
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Posted: 14-September-2021 at 1:18PM |
Thank you! I only added alarm with central door lock and the radio was replaced with a retrosound, I think this isnt too much (I also installed a energy cut in the battery so when is parked the battery is not connected). |
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californiajohnny
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Posted: 14-September-2021 at 2:55PM |
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should be fine, stock was probably 55-65amp so yeah unless you're pulling tons of amps like a serious stereo system you should be just fine! i think the gm 10SI i have on my car is 65 and works fine i have 1 amp and 1 sub and it works great, my courier has a 10SI 65 amp on it too and it's not enough for the bank of 5 amps under the seat powering 10 speakers
 when it goes BOOM the gauge pegs all the way  so a 100 amp upgrade i think is in order soon...on another note... replace the voltage regulator too  if you don't replace both at the same time it seems like a week later the other fails...as far as your battery disconnect... you can run the stereo memory wire (usually yellow) to the battery side of the disconnect so it keeps your preset when the battery is turned off Edited by californiajohnny - 14-September-2021 at 3:00PM |
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JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
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AgentCooper
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Posted: 15-September-2021 at 4:09AM |
Thank you for all the tips. I will replace the voltage regulator and consider the radio connection... Wow... Im not a big fan for stereos, but Im sure it sounds great |
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AgentCooper
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Posted: 15-September-2021 at 5:50AM |
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I upgraded the post with the pic of the actual alternator.
So, I think I will go for the one suggested bye CaliforniaJohnny. |
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AgentCooper
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Posted: 20-September-2021 at 4:29AM |
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Thanks to all of you for your time to answer.
Was a stupid think... the red terminal was (broken? malfunctioning?) but did not keeped connected. When I connected again, everything was fine (13.9V with engine on, with no lights on). With the lights on, is going down to 12.4 (at least is charging, las time was not charging). So now, its working "fine", I can drive and start the engine a few times and I "feel" the same "strenght". Now, its normal this voltage with the engine running (not driving) with no acceleration? (12.4, lights on) Looks like a lot of consumption from the headlights, exists a "elegant" a good option of led lights? |
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californiajohnny
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Posted: 20-September-2021 at 2:41PM |
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sounds about normal above 12 is charging! does it go up with a little throttle?
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JOHN
74 GRAN TORINO S&H CLONE 74 VETTE CUSTOM 90 S10 BLAZER 4X4 LIFTED 77 CELICA CUSTOM 75 V8 MONZA SUPERCHARGED 79 COURIER VERT. SLAMMED 75 VEGA V6 5 SPD 70 CHEV C10 P/U 68 MUSTANG FB CONVERSION |
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AgentCooper
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Posted: 24-September-2021 at 12:49PM |
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Yes, accelerating reaches around 12.7 with headlights on.
Without lights, it keeps in 13.9. |
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72 RS 351 wrote: