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Re: WTB date-coded alternator or front housing
Posted by: cnicol ()
Date: May 08, 2020 01:56PM

Thanks for checking, Joel. I would expect Christmas and New Year to not have much effect since they fell on Saturdays in Dec. 1965. Maybe just two days more for the Friday "eve" days.

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

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Re: WTB date-coded alternator or front housing
Posted by: junkman ()
Date: May 08, 2020 02:21PM

Phil Dally Wrote:
-------------------------------------------------------
> Unless there is another place to look the best I can do on Gem's build date is the trim tag...01B.


The build date of the chassis headed down the assembly line is 01B or January second week of production. Now, don't get caught up thinking that would be like the 8 through the 15th, because you would have to look at the calendar for they year of your car, ie. the second week of production would be Monday through Saturday, (if they even worked on Saturday) would be January 10 - 15, 1996.

joelsplace Wrote:
-------------------------------------------------------
> I went through a couple of dozen. No 5M or 6A so far. I found one with the part number and 37A but no date code. Six have nothing stamped on them at all and a couple were too light to read.
> How would Christmas and New Year vacations affect the date?

The assembly plants close down for Christmas, and they didn't reopen until after New Year. As you can see in the posted calendar, the 1st fell on Saturday, so the first day of production would have been Monday, January 3rd. or 01A. The last week of production 01E would start on Monday January 31, and end on February 5th.
The first day of February production would be on February 7th and end on February 12th.
What is very difficult to determine is exactly when production started in August, after the model year shut down. That might be sometime in the middle of the month, however, whatever day it was, it will be stamped with an A, and depending on the start up day, there might only be 2 or 3 weeks of production for August, the cars would have been stamped 08A, 08B, or 08C. Yes, it can get very convoluted in attempting to calculate what happened when.
Now, another interesting thing is that there are people that have researched this date coding so extensively, they can tell you very closely the date of production that your car went down the assembly line. On my 1962 BelAir, it was built in Janesville on April 6,1962, and my engine was assembled on February 27, 1962. How they can do this is a closely guarded secret, because there are many counterfeit 409 Super Sport cars, and when one comes up for discussion, they can tell the counterfeit from the original. They will not give out this knowledge, because they don't want to educate the counterfeiters. When I was working on my car, I found production dates in some very obscure locations, such as inside of the power steering pump.

---------------------------------------------------------------------------------------------------------------
Woodstock CT... Located on the Connecticut / Massachusetts border, approximately 6 miles from the center of Southbridge MA. About 45 minutes from Hartford CT. 1 1/2 hours West of Boston MA. Woodstock CT to Los Angeles CA 2,937.1 miles. 1 Mile as the crow flies to Big Bird's nest.

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Re: WTB date-coded alternator or front housing
Posted by: Phil Dally ()
Date: May 08, 2020 02:55PM

Gem's starter has an inch of road debris on that spot.

Now I want to know...might take it out and clean it.

The distributor jives at 5M09...this is cool.

Other Protecto Plate dates 1206 & 1213.

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Re: WTB date-coded alternator or front housing
Posted by: OttawaCorvairGuy ()
Date: May 08, 2020 04:41PM

Which side of the ALT can one find these numbers?
The reason I ask is that I have 2 engine out - but the ALT is still amounted and I don't have the strength YET to be able remove them and check.

It should be warmer with no snow tomorrow and I can at least check IF the code are facing the right way.



Edited 1 time(s). Last edit at 05/08/2020 04:43PM by OttawaCorvairGuy.

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Re: WTB date-coded alternator or front housing
Posted by: cnicol ()
Date: May 08, 2020 04:44PM

OttawaCorvairGuy Wrote:
-------------------------------------------------------
> Which side of the ALT can one find these numbers?

Craig Replies:
The numbers are stamped on top of the mounting frame. They're in full view as it sits in the car.


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




Edited 1 time(s). Last edit at 05/08/2020 04:47PM by cnicol.

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Re: WTB date-coded alternator or front housing
Posted by: OttawaCorvairGuy ()
Date: May 08, 2020 06:44PM

cnicol Wrote:
-------------------------------------------------------
> OttawaCorvairGuy Wrote:
> -------------------------------------------------------
> > Which side of the ALT can one find these numbers?
>
> Craig Replies:
> The numbers are stamped on top of the mounting frame. They're in full view as it sits in the car.



I'll check my two tomorrow, sometime when the body lets me, and get back to you.

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Re: WTB date-coded alternator or front housing
Posted by: OttawaCorvairGuy ()
Date: May 09, 2020 07:47AM

Craig, I believe I have what you are looking for. 6A1 37A

GRIN It was the FIRST and easiest one out of four that I looked at.
(It was on the engine I put in UV256 and drove for 3 years.
So I know it worked until I removed the engine to reseal it and put on better tin. Or is that until I parked it. LOL)

I'll try to post a picture of the code ASAP.
(I'm so far behind this mornings on my recent routine of and Meds and such.
I should of had breakfast before 10am so I can take my antibiotic by noon.)



Edited 2 time(s). Last edit at 05/09/2020 07:53AM by OttawaCorvairGuy.

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Re: WTB date-coded alternator or front housing
Posted by: cnicol ()
Date: May 09, 2020 08:12AM

OttawaCorvairGuy Wrote:
-------------------------------------------------------
Craig, I believe I have what you are looking for. 6A1 37A

GRIN It was the FIRST and easiest one out of four that I looked at.
(It was on the engine I put in UV256 and drove for 3 years.


Wow Tony, that sound like a winner! Hopefully the casting is in good shape. I await your report and photos!


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

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Re: WTB date-coded alternator or front housing
Posted by: OttawaCorvairGuy ()
Date: May 09, 2020 09:13AM

Here you go Craig,



Craig, If this is what you are after we can handle this:

1. ONLY if you are in a hurry - I'll ship it from Canada as a complete unit.

2. If you are NOT in a hurry and can wait. I'll ship it (as a complete unit) from USA when I go pick up the wiring from you.

My offer is as follows.

I only want a replacement working ALT to put back on that running engine and you pay shipping.
You can hold onto the one for me (the replacement from you) until we are allowed to cross the border and I'm doing better health wise.

NOTE: Shipping anything from USA vs Canada is MUCH cheaper...

Hope that will work for you...



Edited 1 time(s). Last edit at 05/09/2020 09:15AM by OttawaCorvairGuy.

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Re: WTB date-coded alternator or front housing
Posted by: RexJohnson ()
Date: May 09, 2020 09:43AM

I check on my '68 and '69 and here are the results. The '68 engine is T0116 and the alt is 8A12, only 4 days apart. The '69 engine is T0813 and the alt is 8G10, so 34 days apart.

RJ tools
Salem,Oregon

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Re: WTB date-coded alternator or front housing
Posted by: cnicol ()
Date: May 09, 2020 09:49AM

OttawaCorvairGuy Wrote:
-------------------------------------------------------
> Here you go Craig,
>
>
>
> Craig, If this is what you are after we can handle this:
>
> 1. ONLY if you are in a hurry - I'll ship it from Canada as a complete unit.
>
> 2. If you are NOT in a hurry and can wait. I'll ship it (as a complete unit) from USA when I go pick up the wiring from you.
>
> My offer is as follows.
>
> I only want a replacement working ALT to put back on that running engine and you pay shipping.
> You can hold onto the one for me (the replacement from you) until we are allowed to cross the border and I'm doing better health wise.
>
> NOTE: Shipping anything from USA vs Canada is MUCH cheaper...
>
> Hope that will work for you...

I'm not in a hurry. I'll have a few of my spares tested and take a look inside for a good candidate. Your custom-printed wires are sitting under my desk waiting for your go-ahead to ship. THANK YOU!

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

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Re: WTB date-coded alternator or front housing
Posted by: OttawaCorvairGuy ()
Date: May 09, 2020 09:51AM

BTW - The power plant with this ALT came out of the blue 4dr with the front and rear bumper guards, radio delete plate and gas filler door guard.

But for some reason now I thought that 4dr was 67... Hmm maybe it is a 65...



Edited 1 time(s). Last edit at 05/09/2020 09:54AM by OttawaCorvairGuy.

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Re: WTB date-coded alternator or front housing
Posted by: jcorvair ()
Date: May 09, 2020 05:34PM

I have a 4M29 47A. Sorry no help there.

James
West Kelowna, BC

1965 Corvair, Corsa, Convertible 180/4 - Artesian Turquoise w/ white interior
1966 Corvair Corsa Coupe, 140/4 - Aztec Bronze w/ black interior
2013 Hyundai Santa Fe Turbo
2016 Dodge 3500 Crew Cab 4x4 (for hauling cars, trailers, fifth wheels, quads, etc.)
2013 Victory Car Hauler (enclosed)
2019 Express Car Hauler (Aluminum, Enclosed)
2015 Polaris 570 EPS
2016 Polaris 570 SP
2017 Corvette Z06 Convertible
2019 Toyota Highlander Hybrid Ltd.
2020 Corvette HTC 3LT,Z51,FE4 (on order)

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Re: WTB date-coded alternator or front housing
Posted by: American Mel ()
Date: May 09, 2020 06:26PM

cnicol Wrote:
-------------------------------------------------------
> corvairsince70 Asked:
> -------------------------------------------------------
> > What is the list of codes for the alternator and starter. I understand the year and week, but please list the month codes for each please.
>
> Craig Replies:
>
> A=January
> B=February
> C=March
> D=April
> E=May
> F=June
> G=July
> H=August
> J=September
> K=October
> L=November
> M=December
>
> "I" is skipped.
>
> 5M3 = December 3, 1965, for example.



A bit late to this party, but "I" being skipped totally makes sense.
It could easily be mistaken for a "1".
Which would completely be off from the code alpha-numerics.

-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-
WA. state, 1 mile south of the Canadian border,
I am not at the end of the world, but you can see it from here.
Have; '66 Monza Coupe - 140, 4-spd. Daily driver beater
'67 Monza Vert. - 140, 4-spd. Daily driver beater
'67 A/C Moredoor Monza
Have had; '61 Monza coupe, 80hp, PG
'62 Monza Wagon, 4spd.
'63 Spyder,
'65 Corsa
.
non-vair
'04 Dodge Cummins Quad Dually, approaching 400K
'03 Honda Del Sol
17'Terry

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Re: WTB date-coded alternator or front housing
Posted by: Tom Rahochik ()
Date: May 13, 2020 05:27PM

Craig:

I have a 5M27 front housing. If you are interested, PM me.


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Re: WTB date-coded alternator or front housing
Posted by: OttawaCorvairGuy ()
Date: May 16, 2020 06:52AM

My Oxygen number is up and the MRS is a sleep.



I have my bucket of tools and I'm going to try to remove the alternator this morning for better inspection. Grin





Edited 1 time(s). Last edit at 05/16/2020 06:57AM by OttawaCorvairGuy.

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Re: WTB date-coded alternator or front housing
Posted by: OttawaCorvairGuy ()
Date: May 16, 2020 07:45AM

Craig, Let me know if you want it or not...

Before I removed the alternator.




I got it off, did a light inspection and cleaned the code area to take another picture.
After removing the junk hiding some of the code. I found 6A13
(At least it's not a Monday or Friday build date. Grin)





Edited 1 time(s). Last edit at 05/16/2020 07:49AM by OttawaCorvairGuy.

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Re: WTB date-coded alternator or front housing
Posted by: cnicol ()
Date: May 16, 2020 08:33AM

Thanks! It must feel good to get out of the house and do something "mechanical". It's one more step toward recovery. smileys with beer

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

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Re: WTB date-coded alternator or front housing
Posted by: vairsUPnorth ()
Date: May 23, 2020 07:14PM

Craig, since you were successful in finding an appropriately date coded alternator for your car I might also try.

We own a very original 1967 500 4-door with only 23k documented miles. This is a somewhat highly optioned two-tone car we won the Cole award with in 2017. I am working to undo the few modifications that prevent it from being in Factory Stock class. A previous owner had replaced the alternator with a 4Mxx date code alternator before I purchased the car. That alternator suffered a shorted diode failure while at the 2016 Springfield convention and I was forced to replace it with a rebuilt from Autozone, which I picked up the morning prior to the Autocross. This too, was a 4Mxx rebuilt.

Anyway, as you can see from the body tag and engine stamp, the car was built the 2nd week of October, 1966 and engine assembled September 23, 1966. Therefore I need an alternator end frame stamped 6J22 or earlier. I have been searching the various swap meets and everything listed on eBay for the past 3 years with no luck.

So Phorum members, what have you?

Dale Dewald
Hancock, MI


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Re: WTB date-coded alternator or front housing
Posted by: flat_six ()
Date: May 24, 2020 07:28AM

Hi all,

I have an 02D 66 vert that I am restoring, so the 6A alternator range is of interest to me also.

So if, in the process of searching stashes for Craig, an additional Jan 66 alternator front frame came up, please PM me.

Mike

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