6 replies [Last post]
LS58
LS58's picture
 Offline
Joined: 03/18/2017
Posts: 3

Hello.

I have found an old BMW motorcycle engine I think, I dont know anything about them and i would like some help identifying what it could be.

Regards LS58

  • bmw_5.jpg
  • bmw_9.jpg
  • bmw.jpg
  • bmw_1.jpg
  • bmw_2.jpg
schrader7032
schrader7032's picture
 Offline
VBMWMO #7032
San Antonio, TX
Joined: 10/27/2006
Posts: 6670
If the engine number is to be

If the engine number is to be believed, and it looks correct with the roundels on either side, that number appears to be for an R12 engine. I typed the number into the box on the left side of the screen to show where the number fell.

__________________

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

Darryl.Richman
Darryl.Richman's picture
 Offline
VBMWMO #6285
Surf City, USA (Santa Cruz, CA)
Joined: 10/27/2006
Posts: 2185
That is an R12 motor and

That is an R12 motor and transmission. The number is relatively early, and the heads are the prewar style. It would be nice to see the stampings on the front right of the motor and also under the right cylinder.

Based on not seeing the Waffenamt stamp (a tiny eagle) stamped in the middle of the W of BMW, this would seem to be a civilian bike.

__________________

VBMWMO Webmaster,--Darryl Richman
http://darryl.crafty-fox.com

LS58
LS58's picture
 Offline
Joined: 03/18/2017
Posts: 3
Thanks for the help Darryl

Thanks for the help Darryl and schrader.

Here are the pictures of the stamps on the front right of the motor and also the one under the right cylinder.

  • bmw_extra3.jpg
  • bmw_extra2.jpg
  • bmw_extra1.jpg
Darryl.Richman
Darryl.Richman's picture
 Offline
VBMWMO #6285
Surf City, USA (Santa Cruz, CA)
Joined: 10/27/2006
Posts: 2185
Congrats

Congrats on having matching case halves. Maybe you can hunt up another early head for the left side (that's a war issue item). Do you have the magneto for it?

__________________

VBMWMO Webmaster,--Darryl Richman
http://darryl.crafty-fox.com

LS58
LS58's picture
 Offline
Joined: 03/18/2017
Posts: 3
There was two old bosch

There was two old bosch magnetos but i dont know what they are for, the numbers on the first one was E1 No 3296903 DB57 and the other one says D1B LS44 No 83306.
I dont know what i should do with the engine since i dont have any use for it, is it worth anything if i was looking to sell it?

Darryl.Richman
Darryl.Richman's picture
 Offline
VBMWMO #6285
Surf City, USA (Santa Cruz, CA)
Joined: 10/27/2006
Posts: 2185
These engines definitely have

These engines definitely have value, depending on condition of course. BMW built 36k R12s, so there are still a fair number around, and people are always looking for parts. Things that will help determine value are: does the engine turn over freely? does the kickstarter work and does the transmission shift? are the cylinders inside free from rust? are the castings cracked or broken anywhere? A complete motor and transmission is probably worth at least $2k

__________________

VBMWMO Webmaster,--Darryl Richman
http://darryl.crafty-fox.com

Comment viewing options

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