Batte has a nice Puch Grand Prix 3 speed, but the 4 speed fever has spread to him too. We found a nice X50-4 engine in Austria. It had some chain damage to the engine case, our buddy Nikolaj welded it. The engine had been stored for many years, with old oil and a bit of moisture. Most bearings and the crankshaft where damaged due to rust. We changed everything with new parts.
The cylinder had some rust damage too, we’ve found a oversize piston for it. Right now we are waiting for the rebore. We also changed the exhaust timing a bit, it was very low for our taste. The new engine timings are ~99° transfer ports and ~147° exhaust port.