I have the original alternator that came with my 1965 Corsa. Looking at the date code,4L11 1100639 this appears to be a 37A 1964 December 11th. Can this be up-graded to a 47A in this housing? Is there a rebuild kit available?

1965 Corsa
2nd owner

I'd just buy a 55A rebuilt and swap-over the Corvair end housing and fan.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

Yes, it can. But, I do not know all the pieces you need (to transfer).

Need a good alternator rebuild shop near you.

Or, a known 47 amp alternator of the same vintage. 63 amp also, for that matter.

Only the front cast aluminum piece (the one with two large mounting holes in the bottom) and the fan/drive pulley (one-piece on the Corvair) need to be moved over and re-used.

Seth Emerson

Check my new Performance Corvair Web site [www.perfvair.com]

I think he wants to upgrade his existing alternator because he wants to keep the date coded housing that is original to his car / engine.

RobertC Wrote:
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> I think he wants to upgrade his existing alternator because he wants to keep the date coded housing that is original to his car / engine.

The date code is on the front housing/bracket which gets reused if the back is exchanged for one with a higher capacity or an internal regulator back.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

Looks like the easiest (cheapest) route to 47 amp is to buy a remaned Corvair alternator and transfer your front housing - looked and Autozone carries one. Other flaps probably do, too.

I assume you want to keep the stock rear housing?

I do not know of any flaps that would carry the stator and rotor or the other pieces now - or even long ago.

As I stated before, if you have a business that rebuild alternators / starters in your area, you should be able to get them to upgrade your alternator, but it would probably cost more than my first suggestion.

I doubt many are in business now. The last time I bought parts (brushes / bearings) to rebuild my alternator, the parts guy tried to sell me a remaned alternator. A couple of the parts boxes had dust on them.

To get to 63 amps and keep the stock rear housing, you would need an alternator rebuild shop. I could not find a 63 amp Corvair alternator at Autozone.

HTH

65 amp SI's can on mid 80's GM cars- swap the front out and go internal......regulator that is....

"A sign of great intelligence is being able to say 'I don't know'"
1966 Corsa Turbo Coupe
Located 25 miles East of Rochester, NY

Wagon Master Wrote:

Autozone DL-7107 [Link]

Craig replies: Wow! 47-amp, ready to go Corvair alternator! I wonder how many have the correct fan? Even so that's an amazing find.

Craig N. Coeur d'Alene ID.
66 Black Monza 4dr, 4.2L V8 49k
61 Seamist Jade Rampside 140 PG
60 Monza coupe (sold, sniff sniff)
66 Sprint Corsa convt - First car! Re-purchased 43 years later
2+2 gnatsuM 5691

+17 Tons of parts

cnicol Wrote:
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> Wagon Master Wrote:
>
> Autozone DL-7107 [Link]
>
> Craig replies: Wow! 47-amp, ready to go Corvair alternator! I wonder how many have the correct fan? Even so that's an amazing find.

Per my experience, IF the rebuilder installs a new fan and pulley it WON'T be the correct reverse rotation fan unique to the Corvair.

I have one and it works fine, A few seconds with my impact wrench in both directions it was good to go. Its been installed for several years. Someone on the group mentioned it several years ago for $40+ bucks. I got one at that time.


Full disclosure. It did start to develop slight squeak when warm. It took it apart to inspect the bearings, everything seemed fine. It looked like there was more than normal carbon buildup on the slip rings so I polished them with micro cut. The sound was gone for months but then returned. I'm thinking it may be some weird carbon compound for the brushes. I may try some old Delco brushes IF I ever get the energy.

This issue is something you Flow Master guys would never have to worry about. I can hear on my car unless the hood is open.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa

I looked that one up on Autozone's site and didn't see the amp rating anywhere in the specs. I bought one a few years ago for $19.99 there and the bearings started making noise almost immediately. I went to claim my lifetime warranty and they didn't carry them any longer. I guess my warranty is good again now.

Joel
Northlake, TX
5 Ultravans, 114 Corvairs and counting...

joelsplace Wrote:
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> I looked that one up on Autozone's site and didn't see the amp rating anywhere in the specs. I bought one a few years ago for $19.99 there and the bearings started making noise almost immediately. I went to claim my lifetime warranty and they didn't carry them any longer. I guess my warranty is good again now.

Well, I saw it last night.

Did find a 2019 thread here that referenced the DL7107 Autozone alternator as 47 amp.

Weird. Maybe it is the route I took through their catalog???

Here's my local AZ

The original 47A alternator also had a different regulator, 1119519, 35A used 119516.
Is there an issue buying this 47A from AZone and not changing the regulator?

Dennis
Nashville area

I SAY NO! Alt. Regulator control voltages, not current like a Gen's reg.

MODERATOR
Sea Mountain, between Charleston Harbor and Coos Bay! SW Oregon Coast
Click HERE for My Website...Click HERE for My TechPages!
..............................110-PG.................................................Webered-Turbo

Typically the only thing that changed with GM 4 pin alternator regulator was the cut in voltage. Nothing to do with max current or voltage.

J.O.

65 Corsa Turbo Vert
79 Honda XL 500S
69 Honda CL 160 D
2010 BMW F 650 GS
2003 Bounder 36D
2013 KIA Optima SX turbo-AKA ZIPPY (wife,s car)
69 Newport Holiday Sailboat
Baja 150 dune buggy cart
Coleman HS 500 UTV
2016 KIA Sorento SXL Turbo

Bethlehem,Pa