Was disassembling my motor. Is this normal?
06-18-13, 02:49 PM
#4
I thought it was a locating tab to make sure the oil passages line up with holes in the bearing. Ive read that the tab does little to keep the bearing from spinning, and the bearing is predominately held in place by the interference fit to the stat gear (this is just what ive read, and am by no means a professional or seasoned engine builder 
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06-18-13, 03:03 PM
#5
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I thought it was a locating tab to make sure the oil passages line up with holes in the bearing. Ive read that the tab does little to keep the bearing from spinning, and the bearing is predominately held in place by the interference fit to the stat gear (this is just what ive read, and am by no means a professional or seasoned engine builder )
)
06-22-13, 01:49 PM
#7
Boingers have these as well
I thought it was a locating tab to make sure the oil passages line up with holes in the bearing. Ive read that the tab does little to keep the bearing from spinning, and the bearing is predominately held in place by the interference fit to the stat gear (this is just what ive read, and am by no means a professional or seasoned engine builder )
)On a connecting rod bearing (or main bearing) these tangs fit into slots in either the block or the rods. Both bearings have it and when you assemble a rod, that little tang on both bearings stops them from spinning and they are set so they go with the crank journal so if the journal rotates clockwise inside the rod, the top bearing will have this tang on the right side looking straight on and the bottom one has it on the left side.
It's not perfect, I've seen spun rod bearings on SBCs and B motor Mopars. The person who has the engine always says, "I was just cruising and the rod let loose" yet there's an enormous hole in the block, sure, you were just idling and it grenaded.
Lining up the oil hole is probably just gravy on an SBC.
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