..... Randy, back in the day, when building a motor for the street (racing) or the roundy rounds. The mechanics in my area/group would not build a racing motor, on a motor stand. Because, of the off-set weight. They would say, that the torque measurements would not be the same, at both ends of the motor (the motor would stretch, on a motor stand)
Do you agree??
Would that apply, to motorcycle motors, also??
Brook, I have never heard such a theory. I struggle with that as the loads on the engine when running are much greater than the weight of the engine hanging on a engine stand. I do recall touring the Hendrick engine shop back in the late 90's and they were using engine stands. Maybe things have changed, thought provoking.
Chris, While the concern of the crankshaft weight should be up there, you also need to seriously consider the additions weight of the rods, pistons, cylinder block, cylinder head and camshafts also hanging out there. Be careful, I would hate see that race engine damaged trying that apparatus you have assembled. Leaving it with a safety support of the engine hoist just in case.
Now, how are you going to work on everything in the clutch area? Bearing retainer, oil pump, shift shaft, clutch basket and clutch? That cross bar appears to be right in the way.
Sorry guys, I am still struggling with why...?
With the upper case upside down, the head studs provide a nice angel to ret the crankshaft. Then , that same angle helps when dropping on the lower case half. In fact, it allows you to keep the trans in place better than trying to hang it upside down. Once the lower case bolts are torqued, you roll the engine over onto the flat surface. That then allows the assembly of the rest of the engine on a nice sturdy base.
Chris, be careful, very very careful.
Randy - RPM
