Airhead Engine - Bottom End Assembly - Custom BMW R90/6

The time has come on this BMW airhead project to start putting parts back on instead of taking them off!

We're starting with the lower end of the engine. The main bush bearings - front and rear - get replaced with fresh ones. A special modification is made to the front main bearing carrier to ensure the bearing stays in place. Then the crankshaft gets installed next and the endplay is measured to ensure everything is where it needs to be.

Finally, the camshaft is installed followed by the timing chain. A slight mis-step with parts ordering stalls us momentarily - there are two kinds of oil pump inner rotor and we have the wrong one! The correct piece is ordered - wait for part two of the engine assembly to see that!

Want to see more of the Custom BMW R90/6 Project? Check out the playlist here:
   • BMW R90/6 Custom build  

I'm on Instagram @roodlum   / roodlum  

Parts made right here in Rochester, NY are available here:
https://shop.themotoworks.com/