I am picking up some additional engine parts, in the form of this Model 143 Frontera 360 bottom end. It has the larger cylinder opening of the big bore (326–363cc) bikes, the later (’75-on) left-side shift option, and the same wide-ratio gears as the Lobito 175 transmission I already have. I feel it was a fairly good deal at $199 shipped. The seller said the crank turns but feels gritty. We’ll have to see what sort of condition it’s really in when I get it in the next week or so.
Since all the engine parts I have currently were purchased separately, a complete and intact lower end will also get me all those little extra bits inside the cases that I don’t yet have. I may end up sticking with the smaller motor, since I already have the Sherpa S 200 cylinder (VGC, but bent cooling fin) and NOS 2nd over Tarabusi piston kit for it.
