7 replies [Last post]
mdunn
mdunn's picture
 Offline
VBMWMO #9044
Riverside, CA
Joined: 02/21/2008
Posts: 87

Currently there is a good BMW R12 on USA ebay located in California. This is a great project motorcycle. I am told it runs, this is a plus for restoration down the road and the new owner to be. Check it out, spread the word.

http://www.ebay.com/itm/1941-BMW-R-Series-/162353519852

__________________
schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6623
The VIN given in the ad

The VIN given in the ad tracks back to an R24.

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

mdunn
mdunn's picture
 Offline
VBMWMO #9044
Riverside, CA
Joined: 02/21/2008
Posts: 87
There is no VIN, in order to

There is no VIN, in order to put the add up you need numbers. That's the motor number its a BMW R12, I can assure you this. Also its a Military reinforced frame.

Mike

__________________
schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6623
What do you make of the

What do you make of the numbers that are stamped on the engine? It is stamped 208931. The 931 don't look like the first three digits. And are there supposed to be roundels surrounding the number?

__________________

Kurt in S.A.
'78 R100/7 '69 R69S '52 R25/2

mdunn
mdunn's picture
 Offline
VBMWMO #9044
Riverside, CA
Joined: 02/21/2008
Posts: 87
Kurt, It appears to me that

Kurt,

It appears to me that it was stamped a long time ago and it was a replacement motor block. Does it look original BMW, no. Is the engine a real motor block with matching case halves, YES IT IS. This is the best part about the motor is the matching case halves. Those numbers are 100% legit.
The motorcycle has a lot of original parts on it, including the original 1940 SUM.

Mike

__________________
The Plunger
The Plunger's picture
 Offline
VBMWMO #8356
Joined: 09/03/2012
Posts: 219
BMW prewar #'s

Mike, or anyone, I'm interested in obtaining a pressed frame bike but I am ignorant of what, where and how, serial numbers and such were applied. Can you give me a quick tutorial as to what should match and what case #'s mean?

Thanks,
Brian

__________________

Brian
'52 R67/2

Matteo
Matteo's picture
 Offline
VBMWMO #7805
Joined: 04/12/2010
Posts: 171
I'll give the little I know

I'll give the little I know of the R12 serial numbers (I think all of this applies to the r11/r16/r17 engines). The R12 engine is a split case engine consisting of a top half and a lower half. There are two sets of numbers stamped on the case. The engine serial number, which is stamped both top and bottom half. The top half is the predominant number. Also there is another number which I think is a casting number or maybe a machining number. This is near the front of the engine case. It is super important that these numbers match. If they don't, I believe the oil galleys don't match and the engine won't be properly lubercated. I think the two halves of the engine were matched during production.

If I got this wrong, speak up. I'm relatively new to the pressed frame bikes. I'm slowly getting my R12 into running order.

mdunn
mdunn's picture
 Offline
VBMWMO #9044
Riverside, CA
Joined: 02/21/2008
Posts: 87
The motorcycle is at $14,900

The motorcycle is at $14,900 and the reserve is met, time to place your bids.

Mike

__________________

Comment viewing options

Select your preferred way to display the comments and click "Save settings" to activate your changes.