stamped case numbers

Information on the identification and numbering of frame, motor belly, transmission and other parts
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chopperzz
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Bikes: 65' pan cop special.
78 fx original
2001 96" custom
2002 121" custom
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Location: Erin, Ontario, Canada
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stamped case numbers

#1

Post by chopperzz » Mon May 11, 2009 9:51 pm

on a "65FL13980" is the 13980 the number in the production? or is there more meaning to it?



FlatHeadSix
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Re: stamped case numbers

#2

Post by FlatHeadSix » Mon May 11, 2009 11:52 pm

chopper,
the 4 or 5 digits following the model designation (FL) are only the sequential production number, there is no other info coded into any of the individual numbers. One qualifier however, even though they were just a sequential production number they were using and odd-even system for the start of each year's numbers; even number years started with an even number at the beginning of the serial number, odd years, like your '65, should begin the sequence with an odd number like the "13" in your example.

mike

Cotten
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Location: Central Illinois

Re: stamped case numbers

#3

Post by Cotten » Tue May 12, 2009 2:16 am

chopperzz wrote:on a "65FL13980" is the 13980 the number in the production? or is there more meaning to it?
For one thing, it means you are missing a tappet oil screen.

....Cotten

panz4ever
Posts: 513
Joined: Fri Aug 12, 2005 5:45 pm

Re: stamped case numbers

#4

Post by panz4ever » Tue May 12, 2009 5:07 am

But as you advised me a while back (I too have the 5 number sequence and was concerned because I did not have an oil tappet screen), it just means more frequent oil changes.

SFC Diesel
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Re: stamped case numbers

#5

Post by SFC Diesel » Tue May 12, 2009 1:13 pm

What about the numbers on the bottom side of each half of the case?

what do they tell you.

Cotten
Posts: 6791
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Location: Central Illinois

Re: stamped case numbers

#6

Post by Cotten » Tue May 12, 2009 1:27 pm

SSG!

The "production" numbers on the bellies of the cases are the Factory's serial applied when they were mated and line-bored as a pair.

They should hopefully match, and should certainly be a higher number than the VIN stamped upon the left case boss above the timing hole.

....Cotten

SFC Diesel
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01 Electra Glide
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Re: stamped case numbers

#7

Post by SFC Diesel » Tue May 12, 2009 3:40 pm

vin is 48FL6298

left case belly number is 151-5054
right case belly number is 152-7949

what can you tell me about all this?

gcooperlll
Posts: 13
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52 FL, 05 FLSTN
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Re: stamped case numbers

#8

Post by gcooperlll » Tue May 12, 2009 3:56 pm

not good!

chopperzz
Posts: 41
Joined: Mon Oct 08, 2007 1:39 am
Bikes: 65' pan cop special.
78 fx original
2001 96" custom
2002 121" custom
2008 nightster
Location: Erin, Ontario, Canada
Contact:

Re: stamped case numbers

#9

Post by chopperzz » Tue May 12, 2009 6:13 pm

FlatHeadSix wrote:chopper,
the 4 or 5 digits following the model designation (FL) are only the sequential production number, there is no other info coded into any of the individual numbers. One qualifier however, even though they were just a sequential production number they were using and odd-even system for the start of each year's numbers; even number years started with an even number at the beginning of the serial number, odd years, like your '65, should begin the sequence with an odd number like the "13" in your example.

mike
so does that say that my motor is production #13980 or 980 of the 13 code ?

junker
Posts: 53
Joined: Wed Mar 30, 2005 4:01 am

Re: stamped case numbers

#10

Post by junker » Wed May 13, 2009 1:13 am

Sorry looks like you have a early pan bottomend with 1965 pan numbers stamped on them,if you keep it stay away from big ralleys,they look for bikes like yours so they can keep them.I guess it could be legal but post a pictur of motor to be sure.

chopperzz
Posts: 41
Joined: Mon Oct 08, 2007 1:39 am
Bikes: 65' pan cop special.
78 fx original
2001 96" custom
2002 121" custom
2008 nightster
Location: Erin, Ontario, Canada
Contact:

Re: stamped case numbers

#11

Post by chopperzz » Wed May 13, 2009 1:22 am

I don't understand what you mean? I have a picture posted yesterday in the panhead section of the gallery.
junker wrote:Sorry looks like you have a early pan bottomend with 1965 pan numbers stamped on them,if you keep it stay away from big ralleys,they look for bikes like yours so they can keep them.I guess it could be legal but post a pictur of motor to be sure.

Cotten
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Location: Central Illinois

Re: stamped case numbers

#12

Post by Cotten » Wed May 13, 2009 2:11 am

Chopperzz!

I think Junker got your numbers mixed up with SSG Diesel's example.

In SSG's circumstance, it is still possible that the left case was a legitimate replacement, to which a handy right case was attached later.
Everything depends upon the stamp conformity, and papertrail of course.


...Cotten

chopperzz
Posts: 41
Joined: Mon Oct 08, 2007 1:39 am
Bikes: 65' pan cop special.
78 fx original
2001 96" custom
2002 121" custom
2008 nightster
Location: Erin, Ontario, Canada
Contact:

Re: stamped case numbers

#13

Post by chopperzz » Wed May 13, 2009 2:17 am

Thanks Cotton-

FlatHeadSix
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Location: Lonoke, Arkansas

Re: stamped case numbers

#14

Post by FlatHeadSix » Wed May 13, 2009 4:07 am

chopper,
Its hard to determine exactly how many engines were produced before yours. They skipped all the 4 digit numbers which began with an even number during the odd years so they only stamped engines with 1000-1999, 3000-3999, 5000-5999, etc, etc. So, actual production was roughly half of what the number would seem to indicate. By the time they got to engine number 11000 they had only produced 5000 engines. I'm not sure if there is any data which correlates dates to those numbers so it would be hard to determine when they began each series.

You definitely have a late production '65 pan, beyond that you really can't tell much from the numbers.

mike

junker
Posts: 53
Joined: Wed Mar 30, 2005 4:01 am

Re: stamped case numbers

#15

Post by junker » Wed May 13, 2009 4:30 am

Sorry about that I was confused about.Yes I did not read the right message had a senor moment.hope your belly numbers are all good.

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