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Double Pulley Alternator?

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Old May 15, 2003 | 12:47 PM
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Default Double Pulley Alternator?

I've had a few problems with my alternator belt squealing at high rpm's. I've tried all the usual fixes, with no luck.

One thing that I'd like to try is to install a double pulley on the alternator, and run two belts. I have an extra groove on the crank and wp, plus I'm don't have working A/C, so I figured why not? At the least, I like the idea of having two belts, in case one of them break.

Does anyone sell just the double pulley? Who makes a good quality pulley? Will the double pulley fit my alternator?

Thanks! :seeya
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Old May 15, 2003 | 12:54 PM
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Default Re: Double Pulley Alternator? (shotgun_000)

I know you can get a deep groove pully from Moroso. It's made for racing applications, and we have used them in the past with no problems.

The only catch is that the pulley is a much larger diameter which means the alternator turns much slower and may not produce any juice until around 2-3K RPMs.

As far as a double, never saw one.
Try using a better belt such as one of the Good-year belts or a Gates belt. Maybe look for something that has a touch wider or deeper V to it.
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Old May 15, 2003 | 03:18 PM
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Default Re: Double Pulley Alternator? (BSeery)

I got a billet aluminum two groove pulley from Zoops.
http://www.zoops.com

Very nice pulley. :yesnod:

AC
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Old May 15, 2003 | 04:24 PM
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Default Re: Double Pulley Alternator? (A C)

I have the same squealing problem since removing my A/C and I bought the small belt that goes between the crank and waterpump only, haven't installed it yet but it should do the trick. :D
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Old May 15, 2003 | 06:42 PM
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Default Re: Double Pulley Alternator? (A C)


That's what I'm looking for - thanks :cheers:

Did it fit your stock alternator?

:seeya
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Old May 15, 2003 | 07:17 PM
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Default Re: Double Pulley Alternator? (shotgun_000)

I have the dual belt system on my 74R,It's pretty easy since i only have crank,waterpump and alternator...the crank pulley is a billet Zoops as is the waterpump,i can't remember where i got the alternator one from,i think it was on some old alternator that was lying around...john :chevy :seeya
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Old May 15, 2003 | 09:16 PM
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Default Re: Double Pulley Alternator? (shotgun_000)

Hi
I'm running 2 belts on the alternator of my 68 big block.
Water pump + alternator are all that need to turn on my Vette.
Sorry, can't help on where to get the pulley from.
Gunther




[Modified by WESCH, 8:17 PM 5/15/2003]
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Old May 15, 2003 | 11:07 PM
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Default Re: Double Pulley Alternator? (WESCH)

I had a double pulley on my street rod, it came with the chrome alternator from the auto electric shop. You might ask your local rebuilder if they sell pulleys seperately. Joe
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Old May 15, 2003 | 11:21 PM
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Default Re: Double Pulley Alternator? (shotgun_000)

The Zoops pulley did fit the stock alternator. :yesnod:

AC
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Old May 16, 2003 | 06:29 AM
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Default Re: Double Pulley Alternator? (WESCH)

Thanks for the picture :cheers:

BTW, is that an aluminum radiator? Looks :cool: :thumbs:
I plan on installing one of those later.
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Old May 16, 2003 | 06:30 AM
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Default Re: Double Pulley Alternator? (A C)

The Zoops pulley did fit the stock alternator. :yesnod:

AC

That's what I was hoping to hear :party: :party:
Thanks again! :seeya I'm placing an order today; might order some of their other pulleys too :cheers:
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Old May 20, 2003 | 06:48 AM
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Default Re: Double Pulley Alternator? (shotgun_000)

Hi shotgun_000

Yes, it's a NORTHERN universal alu rad, that's been slightly modified.
I rewelded both water necks due that they come stright out on the universal and I needed them angled. I also added the water drain fowl.
Plenty of posts in this forum about it, do a search.

Rgds Gunther :seeya
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Old May 20, 2003 | 11:10 AM
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Default Re: Double Pulley Alternator? (shotgun_000)

I had the same problem with my belts squeking too. When I took the mech. fan off the belts stopped queking at all rpm's. :D
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