how many amps do I need to start my engine?

Discussion in 'Technical' started by mashori, Dec 15, 2012.

  1. bmcdaniel

    bmcdaniel Senile Member

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    Yeah, I've seen it suggested, too, and it's a terrible suggestion. You may not immediately see the damage but components can incurr latent damage, in other words, they are weakened and will fail sooner than later. Especially the diodes in the alternator. And yes, sometimes a load dump will occurr when the battery encounters mechanical shock and the internals momentarily open circuit. For several years I worked at a company designing automotive electronics. An automobile's electronic enviroment is nothing like you find anywhere else with the temperature extremes, EMI, current and voltage surges, etc.. Thank God for MOVs and surge suppressors! LOL
     
  2. Krazy Comet

    Krazy Comet Tom

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    OK, for the record I say 70-80 amps isn't going to start a engine either... Maybe in warm weather, from a battery, using one of today's reduction starters, but absolutely not with a direct drive starter supplied by a alt...

    Now on not reading the posts(which I have), did you not read my post that the direct drive starter on my 5.0 T-Bird is drawing over 125A while cranking???(and that's with two cylinders at 35psi) You are the one that made the ridiculous claim that 65A supplied by a alternator will start a engine, had it been the poster that said 80A, I'd have been on him... If I ever get the Comet home(long story), I'll test it's cranking amperage...

    I'm done...
     
  3. MSmithPDX

    MSmithPDX Member

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    Sure but every motor has an operational range. Just because yours draws 125A doesnt mean it won't operate at less, it just wont be as efficient. It will be a *slow* starter, but if you are not draining out the battery a slow start will get the job done.
     
  4. Octavio

    Octavio Member

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    excuse me sir; but here in the maquiladora industry in Mexico; We take the quality control very seriously; most of us are certified in ISO 9000, QS9000, ISO/TS 16949 standards and the ISO people come here every 6 months to check our quality system and every three months we do a complete review, in fact the guide menu come from the central offices in U.S. and we follow these guide. I have worked in three places
    1.- Zenith Electronics 2.- Chrysler 3.- Ford motor Company Engine plant and we follow the ISO and QS standard since the company said we will need to follow this, in order to be trusted as a reliable manufacturer in all the world , now the U.S. manufacturers are moving to China because the Chinese workforce is cheaper but not certified by ISO/QS standards, it is weird, first the manufacturer said that we will need to be certified by ISO in order to raise our payment and after certified they say we are most expensive than Chinese workforce; any way I apologize if one of your items made in Mexico was defective, and if is under warranty, please return it to your vendor. Sincerely: Octavio Salcido
    Franz Electronics, Chihuahua, Mexico.
     

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