Strange letters on a left lid from a NZ 350-1 Grauguss-motor

Basic info on DKW NZ 350's

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martdapp
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Post by martdapp » Tue Jun 01, 2010 12:45 pm

Meanwhile some-one told me he has 11-1 (from left to right) in a 1944 NZ-1
with motornumber 1503673.
He believes that the numbers are for to differ the casting-molds.
So we have now;
12 -12, 21 -21, 11 -1, 8 - 1
In this topic I tried to kopie a tabel with engine-numbers etc. , it failed.
Last edited by martdapp on Tue Jun 01, 2010 9:21 pm, edited 1 time in total.
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pararigger
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Post by pararigger » Tue Jun 01, 2010 4:10 pm

NZ 350-1 April ´44. No numbers on my engine!!!!

I have no idea what these numbers are for!
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Post by Paul » Tue Jun 01, 2010 4:54 pm

I checked my engine, it does not have any mold numbers. It is a '45 production engine. I'll take some photos and post them.
Paul

1945 DKW NZ 350-1
1948 Harley-Davidson EL
1975 MZ TS-250 A
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Post by martdapp » Fri Jun 11, 2010 3:00 pm

More numbers came in; 8-12 and 15-12.
So now we have;
12 - 12
21 - 21
11 - 1
8 - 1
8 - 12
15 - 12
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Post by martdapp » Sat Dec 18, 2010 10:28 pm

Momently for sale on Ebay;
http://cgi.ebay.de/ws/eBayISAPI.dll?Vie ... TQ:DE:1123
It has the numbers 8 -1
This number-combination was allready known
The known combinations are till now;
12 - 12
21 - 21
11 - 1
8 - 1
8 - 12
15 - 12

Till yet it is not clear what these numbers mean !

Image
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Re:

Post by martdapp » Thu Nov 10, 2011 8:13 pm

It becomes still more strange now; a reaction with pictures and data from fiischma11
http://imageshack.us/g/508/naamloosov.jpg/
The "x" on both sites fom the engine.
The hoizontal "P" beneeth the Auto-Union-rings.
Even still stanger, the positive script "NZ 50" and "250" instead of the normal script NZ350-1.
I never heard of a Grauguss (Ironcast) 250 engine........
Picture 1 Motordatum 6-44
Picture 2; Motordate 8-43 bis 2-44 (o.h.o. cylinder and inne parts)
Picture 3; Motordate 8-44 "X" is on both Engine-sites.
maybe as spare-part ??
It would be interesting to know if RT125 nA-engines have also such numbers ???
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sanchez ramirez
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by sanchez ramirez » Tue Nov 15, 2011 10:11 pm

Greetings!
Here mine NZ-1 44 years, only such designations
Image
Still there is a symbol "Х"
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by martdapp » Sat Jan 14, 2012 10:57 pm

And again, clear to see "NZ 250" !!!
The 250 however was not in production anymore since the 350 Iron/Grauguss-engine was produced in late 43.
To my opinion it was meant as replacement engine for older 250th.
Were the 250 and 350 engines in that time the same, only difference in ccm?
I wonder if anyone has a original complete 250 Grauguss-engine?
Martin
DKW 250 Grauguss.jpg
DKW 250 Grauguss 1.jpg
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by martdapp » Wed Apr 20, 2016 4:35 pm

More numbers came in; 29 - 12
So now we have;
8 - 1
11 - 1
7 - 12
8 - 12
12 - 12
14 - 12 on clutch-lid
15 - 1
15 - 12
26 - 12
29 - 12
21 - 21



Till now nobody could tell for sure what the use of these numbers was.
Grauguss-nummer 29-12.jpg
Regards,
Martin
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Last edited by martdapp on Mon Dec 12, 2016 6:44 pm, edited 2 times in total.
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by Martins » Wed Aug 24, 2016 4:02 pm

Since the number on the iron engine that i have is hard to understand (rusted off) i did some research to understand what month/year it might be.
Engine have got letter "X" on both sides of the blocks.

Searching web i found some pictures of engines with same "X" markings on both sides of the blocks.

*140 6080*
*140 6116*
*140 6657*
*140 6750* ("X" marking on right side block_engine 08.1944.)

Looking from the data base they could be dated 09.1944.

These engines have something common, they all are 6000 engines !

Does anyone, apart from these, also have iron engine blocks with a letter "X" ?

Image
Image
Image
Image
Image
Image

Reagrds,

Martins
Last edited by Martins on Thu Aug 25, 2016 9:30 am, edited 1 time in total.
martdapp
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by martdapp » Wed Aug 24, 2016 7:49 pm

You should go to the Police with your engine, they can help you with the vanished number like they do with weapons and cars with vanished numbers.
I think would like to help you with something total different as weopons and cars.
Regards,
Martin
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by fischma11 » Thu Aug 25, 2016 6:26 am

Hello, on my 45´er NZ engine, there are on the right side 7 12 markings, on the left side 26 12 markings.(early 45 bike) I think this markings are only on late 44 or 45 dated bikes.
On my 44`er NZ engines, there is the X marking.
Enginenumber 1404747 and 1405173

Regards Martin
NZ350-1
EL203,EL201,C1,GG400,ETS8
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by Martins » Thu Aug 25, 2016 9:56 am

martdapp wrote:You should go to the Police with your engine, they can help you with the vanished number like they do with weapons and cars with vanished numbers.
I think would like to help you with something total different as weopons and cars.
Regards,
Martin
I already went to a transport registration institution and they scanned the number place with some special device, but no result. They told me to grind the surface a bit and then use some kind of acid - maybe this could work.
I'm not sure if i want to do this, like damaging the surface even more - just leave the place as it is.
I you look closely in daylight some trace of number can be seen like *14_._.61_*
I believe that the number could be *140661?* - this would mean that the engine is dated autum 1944.
Image
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by Martins » Thu Aug 25, 2016 10:07 am

fischma11 wrote:Hello, on my 45´er NZ engine, there are on the right side 7 12 markings, on the left side 26 12 markings.(early 45 bike) I think this markings are only on late 44 or 45 dated bikes.
On my 44`er NZ engines, there is the X marking.
Enginenumber 1404747 and 1405173

Regards Martin
Can you please post a picture, so the "X" marking can be seen ?
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Re: Strange letters on a left lid from a NZ 350-1 Grauguss-m

Post by martdapp » Thu Aug 25, 2016 3:47 pm

Your numbers are to find on the list in this topic now.
Martin
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