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Re: 66 Corsa convertible with factory AC
Posted by: 67 airvair ()
Date: March 12, 2019 04:31AM

On the HD coil, it was never a stand-alone option. Whether there was any differences in standard equipment, I'm not so sure. You'd best ask someone like Larry Claypool.

-Mark

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Re: 66 Corsa convertible with factory AC
Posted by: texas yenko dude ()
Date: March 12, 2019 04:48AM

Factory A/C cars all had the 47amp alternators as part of the A/C package and they use a different voltage regulator.

Texas YENKO Dude
YS-070
YS-199
YS-320
Southeast of Disorder


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Re: 66 Corsa convertible with factory AC
Posted by: 67 airvair ()
Date: March 12, 2019 06:16AM

You're right, Texas Yenko Dude. They were part of the package. They could also be had as one stand-alone option.

-Mark

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Re: 66 Corsa convertible with factory AC
Posted by: rnch ()
Date: March 12, 2019 08:21AM

texas yenko dude Wrote:
-------------------------------------------------------
> Factory A/C cars all had the 47amp alternators as
> part of the A/C package and they use a different
> voltage regulator.


How can one verify the larger alternator and different voltage regulator?


confused smiley

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Re: 66 Corsa convertible with factory AC
Posted by: texas yenko dude ()
Date: March 12, 2019 08:27AM

The part number on the regulator is different. The alternator will be stamped 47A. The alternators were built in small batches. I still have 4-8 of the 47’s. I have had several with the same date code.

Texas YENKO Dude
YS-070
YS-199
YS-320
Southeast of Disorder


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Re: 66 Corsa convertible with factory AC
Posted by: rnch ()
Date: March 12, 2019 09:17AM

texas yenko dude Wrote:
-------------------------------------------------------
> The part number on the regulator is different. The
> alternator will be stamped 47A. The alternators
> were built in small batches. I still have 4-8 of
> the 47’s. I have had several with the same date
> code.


So I am guessing that "37A" would be for a non-Factory A/C Corvair?

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Re: 66 Corsa convertible with factory AC
Posted by: 66vairman ()
Date: March 12, 2019 10:18AM

texas yenko dude Wrote:
-------------------------------------------------------
> Factory A/C cars all had the 47amp alternators as
> part of the A/C package and they use a different
> voltage regulator.

Also the 47Amp regulator was different for the 1965 models vs. the 1966 models. In 65 the 47Amp regulator used an external diode. Just from memory as I don't have the spec. handy.

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Re: 66 Corsa convertible with factory AC
Posted by: Timothy Shortle ()
Date: March 12, 2019 10:30AM

You cannot assume if a car has a 37A alternator that it was not a factory A/C car.
Many, many parts have been swapped out thru the years. Many parts houses would state "they are all the same" (just because the parts would bolt on, fit, and even work).

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Re: 66 Corsa convertible with factory AC
Posted by: Timothy Shortle ()
Date: March 12, 2019 10:35AM

To rnch: I misread your post. Yes, the 37A alternator was considered standard equipment. The 47A alternator was standard equipment on factory A/C cars. I believe the 47A was also available as an option for cars without A/C.

I wonder if the dealer installed GM A/C kits came equipped with the upgraded alternators (or even the back half?). Maybe someone here more knowledgeable can answer that.

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Re: 66 Corsa convertible with factory AC
Posted by: flat_six ()
Date: March 12, 2019 05:16PM

Timothy Shortle Wrote:
-------------------------------------------------------
> You cannot assume if a car has a 37A alternator
> that it was not a factory A/C car.
> Many, many parts have been swapped out thru the
> years. Many parts houses would state "they are all
> the same" (just because the parts would bolt on,
> fit, and even work).


Likewise, if the alternator has 37A stamped on it, you can't assume that it is only 37 amps. Many rebuilding houses upgrade the internals to standardize on parts.

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Re: 66 Corsa convertible with factory AC
Posted by: 67 airvair ()
Date: March 12, 2019 11:10PM

Posted by: Timothy Shortle ()
Date: March 12, 2019 10:35AM

To rnch: I misread your post. Yes, the 37A alternator was considered standard equipment. The 47A alternator was standard equipment on factory A/C cars. I believe the 47A was also available as an option for cars without A/C.

I wonder if the dealer installed GM A/C kits came equipped with the upgraded alternators (or even the back half?). Maybe someone here more knowledgeable can answer that.


Tim,
Yes, the 47 amp alternator was also a stand-alone option. Also, the dealer installation kit had the parts to upgrade the alternator to 47 amps.

-Mark

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Re: 66 Corsa convertible with factory AC
Posted by: rnch ()
Date: March 14, 2019 07:02AM

flat_six Wrote:
-------------------------------------------------------
> Timothy Shortle Wrote:
> --------------------------------------------------
> -----
> > You cannot assume if a car has a 37A alternator
> > that it was not a factory A/C car.
> > Many, many parts have been swapped out thru the
> > years. Many parts houses would state "they are
> all
> > the same" (just because the parts would bolt
> on,
> > fit, and even work).
>
>
> Likewise, if the alternator has 37A stamped on it,
> you can't assume that it is only 37 amps. Many
> rebuilding houses upgrade the internals to
> standardize on parts.





I wonder if the "37A" alternator on my factory A/C car has been upgraded internally?

Even with 2 electric condenser mounted cooling fans, upgraded headlights and A/C running on high I never notice any dimmed lights at idle or slowing down of the turn signals; battery always stays charged up.

"If it ain't broke don't fix it/"

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Re: 66 Corsa convertible with factory AC
Posted by: MattNall ()
Date: March 14, 2019 10:33AM

Find a friend with a clampon Ammeter....


Start engine... turn everything on HL's on high beam... rev engine to 2000 rpm and it will tell you

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

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Re: 66 Corsa convertible with factory AC
Posted by: rnch ()
Date: March 14, 2019 01:16PM

MattNall Wrote:
-------------------------------------------------------
> Find a friend with a clampon Ammeter....
>
>
> Start engine... turn everything on HL's on high
> beam... rev engine to 2000 rpm and it will tell
> you





That would indeed be a neat tool to have!

I wonder if Harbor Freight sells one of these......

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Re: 66 Corsa convertible with factory AC
Posted by: MattNall ()
Date: March 14, 2019 01:21PM

Sure do!

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

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Re: 66 Corsa convertible with factory AC
Posted by: MattNall ()
Date: March 14, 2019 01:28PM

Here's the best Value for a home user.. 0-600 DC Amps

[www.ebay.com]



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

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Re: 66 Corsa convertible with factory AC
Posted by: Frank DuVal ()
Date: March 15, 2019 10:07AM

Mat, that would be a great meter for around the house or industry, as it is AC amps only! Useless on a DC system like a car.

Maybe you meant this one:

[www.ebay.com]

Frank DuVal

Fredericksburg, VA



Edited 1 time(s). Last edit at 03/15/2019 10:12AM by Frank DuVal.

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Re: 66 Corsa convertible with factory AC
Posted by: MattNall ()
Date: March 15, 2019 10:34AM

Specs say DC!!

- Display Count: 5999
- Model: UA2008B
- AC Current (A): 6A-600A ±(2.5%+5)
- DC Current (A): 6A-600A ±(2%+3)
- AC Voltage (V): 6V-600V ±(1%+5)
- DC Voltage (V): 6V-600V ±(0.8%+1)
- Resistance (Ω): 600Ω-60MΩ ±(1%+2)
- Auto Range
- Diode
- Auto Power Off
- Continuity Buzzer
- Low Battery Indication
- Data Hold

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

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Re: 66 Monza convertible 140/4 with A/C
Posted by: azdave ()
Date: March 16, 2019 11:14AM

Getting this back on topic... grinning smiley

He found the title. All numbers match including the hidden VIN. It's always been a 66 Monza and guessing it was converted to Corsa running gear before his dad bought it.

Dave W. / Gilbert Arizona
65 Corsa 140/4
66 Corsa 140/4
66 Corsa 140/4 w/factory A/C
66 Corsa 455 Toro V8
65 Monza Convertible 110/4
66 Monza Convertible 140/4
65 Monza 4DR 140/PG w/factory A/C
65 Monza 4DR EJ20T/5



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Re: 66 Corsa convertible with factory AC
Posted by: Timothy Shortle ()
Date: March 16, 2019 12:14PM

I see the CORSA sticker on the windshield. The club, not the car model.

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