Re: Assembly defects, with pics & other stuff
The photo below shows a crankshaft with the weights removed. The bolt hole pattern for mounting these weights are 120 degrees apart. The cut-outs for balancing should, of course, be postioned at the rod big-end. One of the weights on this crank had been fastened, "clocked", 120 degrees out. I'm certain that this is why some engines vibrate so much more than others.