Anyone have any idea of what this came off of? I'm guessing a very old small lathe, maybe even an armature lathe. Other than a patent date there's no markings on it anywhere. I cleaned it up just to see.
Spent my spare time recently working on cleaning up the adapters for my brake lathe. Bought an inside mandrel set off Amazon for around $35. Put the 1" one in my 4 jaw chuck and indicated it in. If the inside hole wasn't too bad I sanded the hole and then mounted the adapter one it. Then I used...
You swapped engine and trans together? Sounds like it could be a balance issue. First crack each injector loose one at a time while the engine is running. Be careful of high pressure spray as it can inject into your hand and cause a very bad day. If you find one that doesn't make any difference...