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Diomedes
PostPosted: Sun Sep 23, 2007 8:46 pm 
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Location: Crib Point, Vic.
I have about 7 alternators, all with bad diodes. (I know it's not the brushes. When the ECU gets AC, all kinds of dummy lights come on!) Does anyone know how one can go about replacing the diodes with NEW ones, because I'm getting sick of replacing my alternator with another 500,000km old unit every six months.


Now, with that request over, I'm just going to VENT about being STRANDED in FRANKSTON LAST NIGHT BECAUSE OF CRAP BATTERY CONNECTIONS UNABLE TO SUPPLY ENOUGH CURRENT TO KEEP THE ENGINE RUNNING WITHOUT AN ALTERNATOR.

Always buy quality connectors.
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Diomedes
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PostPosted: Sun Sep 23, 2007 10:29 pm 
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A friend just informed me that the 6 diodes would probably cost $40 each.


So that's the end of that.
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bob260
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PostPosted: Sun Sep 23, 2007 11:44 pm 
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What spec are the diodes?

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$2000 challenge bluebird - no more.
RPS12 - 80s-o-rama. Currently dropping 200cc, gaining a cam and gaining a turbo.
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Diomedes
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PostPosted: Mon Sep 24, 2007 12:50 pm 
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The 'spensive ones I was quoted? I dunno exactly. Over spec, probably 100 amp or something ridiculous.
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Rod F
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PostPosted: Mon Sep 24, 2007 1:37 pm 
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Do you mean buying them individually? I thought they were sealed in a plastic pack, or are they 'exposed' and wired inside the casing?
Maybe i'm thinking of the voltage reg?

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bob260
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PostPosted: Mon Sep 24, 2007 1:37 pm 
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Do you just need a bridge rectifier? I have access to 420V, 50A bridge rectifiers, I cant remember the price but I recall they are under $10. You say you need 6 diodes though - what is the output of an alternator before the rectifier?

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$2000 challenge bluebird - no more.
RPS12 - 80s-o-rama. Currently dropping 200cc, gaining a cam and gaining a turbo.
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Diomedes
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PostPosted: Tue Sep 25, 2007 9:08 pm 
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Location: Crib Point, Vic.
I said 6 diodes because I *think* these alts are 3 phase, but I'm not actually sure. I was just trying to gauge how doable this is...

I've been told they can be replaced individually, just not how, or what kind of diodes to use, etc...


I need a functioning alternator, so I'm open to any ideas you guys have.
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chasing the dragon
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PostPosted: Sun Oct 14, 2007 1:13 am 
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Location: Adelaide Hills
Convert to Bosch IR. Simple and reliable

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Brendan
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PostPosted: Sun Dec 16, 2007 2:55 pm 
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It is possible to put commodore internals into the L series housing with a little machining, to the housing... commodore replacements should be nice and cheap

im looking for more info on how to do this
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Diomedes
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PostPosted: Mon Dec 17, 2007 12:44 pm 
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Exactly what my autoelec said to do. That's what I did.
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banzai510(hainz)
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PostPosted: Thu Dec 20, 2007 4:08 am 
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Location: Covington,Wa USA
http://info.rockauto.com/SMP/SMPDetail3.html?D45.html
like this


spend the money and get a new one from a good company that has a high rating
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