Quote:
Originally Posted by johnta1
Really easy sometimes.
Never had a main spin but when a rod bearing spins it will usually get hot enough to do major damage.
Basically the bearing shell starts sliding under the other shell , if the 'clearance' is on the upper part, that makes the crank closer to the head/deck of block. (wedges the crank up when the bearing goes under the other bearing) I have heard they will squeal a little before they do it?
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A 455 I bought from a guy had bearings "stacked" on one journal. Cast rods. I told him not to mess around with cast rods, but he did. Ran 12.20s. Block is great, crank needs checked and ground.
It never seized, shut it off just in time.