MC91B1 rod, piston, wrist pin assembly

[Bob Alexander]

I just tore down an engine to freshen it up for Avon and discovered, to my dismay, that the rod cap was cracked. Why it didn't fly apart the last time it was run is a mystery, just lucky I guess. So I have to change the rod. Problem is it's something I've never done, I always had the machine shop change the piston when I had a block bored.

I know it's a press fit between the rod and pin, but what's the procedure? The pin bearings are open on one end and closed on the other. Do you push from the open side and drive the closed bearing out with the pin? What is the proper way to support the piston?

Help!  BP

Bill:

I sent you a pm.

Bob Alexander