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The similarity of the MK 12 b to the Webra series 2 engine shown below is probably no accident
Different production runs of MK12 b engines
Design History:-
Designed and manufactured in Russia in the mid 1960's
Design Features:-
Early versions featured a removable front housing;
later models featured a single piece crankcase;
rear induction; and
crankshaft supported on ball bearings
Specifications:-
| Fuel: | Ether/Petroleum/Oil |
|---|---|
| Cycle: | 2T |
| Data | |
| Cylinders: | 1 |
| Displacement: | 2,45 cm³ |
| Bore: | 15,5 mm |
| Stroke: | 13 mm |
| Weight and Dimensions | |
Other Information | |
| Model Year | 1980 |
| Manufacturer | |
| U.S.S.R (C.C.C.P.) | |
| Distributor | |
| U.S.S.R. (C.C.C.P.) | |
Comments:-
The engine is an example of an early production run (serial number 44) it comes complete with several production flaws and a lower than average compression, which makes it difficult to hand start. 
