Engine Won't Rotate - 911SC

[Steam Driver]

I was going to install P/C's #1 and 4 this afternoon for deck clearance checking, but ran into an issue.

When I tried to rotate the crankshaft to the the rods in the right position I could not. I knew that it turned fine right after the case was bolted together, so there were only two likely suspects, either the FW or the crank pulley. First choice was the FW. So I removed it.

After removing the FW the crank turned fine. So I played with things a little bit and found that the FW would lock things up even when "installed" with only three bolts tightened finger tight.

I can see nothing in the parts diagram or manuals that should be installed between the crank end and the FW, so any idea what's going on here?

[Flat6pac]

You're limp rods are hanging up, particularly on the oil pump when they are on the lowest part of the crank throw
Bruce

[Steam Driver]

Actually, no. After the original panic attack I began to look at it more analytically. Why was the FW the crux of the issue?

Looking around the FW more critically, I noticed a lack of any gap between the edge of the FW and the engine stand yoke at the bottom, so I decided to try centering it up. So what I did was rotate the engine so the stand yoke was up, then loosen the nuts holding the engine to the stand, then picked up slightly at the pulley end. This allowed the engine to "fall" within the limits of the holes in the yoke, and establishing a gap between the FW edge and the yoke.

Problem solved. The way it was the FW would fit up OK, but would be slightly cocked. When bolted down flat, even just finger tight, it was dragging enough on the yoke to make it impossible to turn with reasonable force.

[Flat6pac]

I don't build with the flywheel in place but I know the hang up you mentioned.
Bruce