1 Wire High Amp Alternator Suggestions

Discussion in 'Parts Interchange' started by mav1970, May 30, 2009.

  1. mav1970

    mav1970 Bob Hatcher

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    Very soon I'll be in the market for a 1 wire, high amperage alternator, and am looking for any helpful suggestions from experience. :bowdown:

    I'd like to go with the high amperage mini style, if possible. It also doesn't matter what the alternator was originally designed to fit. This will be mounted to my Cleveland and I'll make brackets if need be.

    Thanks, Bob :Handshake
     
  2. sierra grabber

    sierra grabber Certifiable

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    unfortunately almost all of them use the chevy style. so far i have burned out three of them. luckily it has just been the bearing that i now know how to replace, but that also means that i have had to pull over and be towed home due to the broken belt: three times. They were all placed on my 390. This is the type that lasted the longest(over a year):

    http://store.summitracing.com/partd...iew=32&N=700+4294925143+4294880793+4294908331

    i paid much more for the powermaster version and it burned out in a week. and yes i am checking my belt tension each time... ;P
     
  3. mav1970

    mav1970 Bob Hatcher

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    What do you see is the reason that the bearings have been burning out?
     
  4. bmcdaniel

    bmcdaniel Senile Member

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    I've been running the Summit one for several years now. Before that I ran a rebuilt GM unit.
     
  5. 71gold

    71gold Frank Cooper Supporting Member

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    maybe needs an...underdrive...pulley...:yup:...
     
  6. mav1970

    mav1970 Bob Hatcher

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    In the past, I have used a single 30% underdrive pulley on the crankshafts of our Late Model circle track cars. It slowed the water pump down enough so not to cavitate and the alternator down enough so it didn't spin it's guts out of the case. But that was because we topped out at 6800 at the ends of the straight aways and never went below 4000 through the turns. If the alternator bearings were burning out from the high heat of excessive RPM's, a larger pulley just on the alternator would do the trick.

    I'm just figuring on running normal RPM range on the street so I'm not sure if it would be needed. The alternator would spin really slow at idle, for certain.
     
  7. Jamie Miles

    Jamie Miles the road warrior

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    I've been running a rebuilt Chevy one on my car for about a year and half now. About 27,000 miles on it, no problems.
     
  8. Andysutt

    Andysutt '72 Comet GT

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    I converted a 91 Tempo to 1 wire setup on a 390 quite a few years ago, still going strong. Easy to do also.

    I used the stock pulley and haven't had an ounce of problem with it.

    With you burning up 3 bearings I'm thinking you are turning it to fast as well
     
  9. Jamie Miles

    Jamie Miles the road warrior

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    This reads to me like you have a '91 Tempo with a 390 in it. Certainly that's not what you meant.

    A more expensive option would also be the 3G Ford alternator. Just go to the parts store and order an alternator for a '95 Mustang GT. It's 130 amps, and uses sealed ball bearings instead of the needle bearings the GM alternator uses. You will need an impact wrench to remove the serpentine pulley and put a V belt pulley on it. Expect to pay around $200 for this alternator with the core charge. But they are excellent alternators.
     
    Last edited: May 31, 2009
  10. sierra grabber

    sierra grabber Certifiable

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    im running the stock water pump pulley and bottom pulley on a 73 390, so im not sure why i would be overspinning the chby alt. especially since i never run the truck over about 4500 rpm. any other suggestions are welcome however because my stock 65 alt is barely keeping up with the dual fans and i also have power coming off the truck to the camper......

    Maybe i should save up and get the one jamie is talking about.
     
    Last edited: Jun 1, 2009
  11. mean_maverick

    mean_maverick Senior Member

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    that's what im running on my '71 and plan on using one on my '73 Grabber, and i have a spare :yup:

    i installed mine on my '71 in May, 2008 and haven't had one problem since. there's a write-up on it from Mustang Monthly i think, and i also have a nice diagram of the wiring as well..... not to mention, it's a ford part :yup:
     
  12. Andysutt

    Andysutt '72 Comet GT

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    I forgot to put alternator in that sentence... "I converted a 91 Tempo alternator to a 1 wire setup, and put it on a 390" is how that is supposed to read
     

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