BMW R27 Powerplant

Air cooled 250 cc Single cylinder

     When the engine is started it idles smoothly. When cold, no rattling or knocking noises can be heard. Within tolerance valve train clearances and lubrication is assured. Due to quite running operation, this power plant appears to have no obvious mechanical issues. When running at idle with the rear wheel off the ground, I operated the clutch and shifted down into first gear and then up into second there was a light clunk upon shifts as the clutch is not fully disengaging. The transmission made no unusual noises and the shaft drive line quietly powered the rear wheel. I performed this operation several times and the shift lever responded appropriately and firmly. The clutch seems to be the issue. The transmission turns quietly as does the shaft drive to the rear wheel. There appears to be no issues at low speed during no load operation.

 

Check out this video kick start up

The front of the engine. oil pan has a leak, fixed with clean out and new gasket. Easy paint work for frame. Exhaust pipe is average.

 Oil leak over right rear motor mount. Clean and paint area.

Air cleaner and battery box cover with kick plate.

Restore and finish glossy back.