Your IC engines have been using them as long as I can recall.
I read that but I still wonder where exactly.
Between the crankshaft and engine block, and old school pushrod ICs around the camshaft in the block.
Like this (external-content.duckduckgo.com)
Not exactly the same. Babbitt bearings are made of soft alloy, and used in most pre-50's engines. They were melted and poured into the block. Usually Rod and Mains.
Take the chevy small block, main bearings and Rods, are "Shell Bearings" insert style or "half shell" as we know they come in two parts. They are made of steel with softer layers applied that wear over time. The soft layer could however be "babbitt" or tri metal, but not many use that as they don't provide longevity as other materials such as copper-led or alunimun-tin. Babbit is a tin-led material.
And most that used babbitt have a direct replacement now that are much better for longevity. Personally I dont know of a block that has to be poured in place. I am sure there are some, but none that anyone would likely run into unless working on a matching numers classic thing that is worth more running original than usable as a fun vehicle. (kinda opinion, but hope you get that logic)
Cool, thanks.
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