Re: Excessive crank end float.
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The thrust surface width on your nice condition crankshaft is worn so to reduce the end play a bit here's what you can do. Flare the thrust surface out just a touch on the main bearings. Wont take much to reduce the end play down to the max which is .006 according to the books I work from. It would take a long time before any wear is seen in the bearing if you decide to just flare the bearing thrust surface out a slight amount.
Ronnieroadster
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I use the F word a lot no not that word these words Flathead, Focus and Finish
"Life Member of the Bonneville 200 MPH Club using a Ford Flathead block
First Ford Flathead bodied roadster to run 200 MPH Record July 13, 2018 LTA timing association 200.921
First Ford flathead roadster to run 200 MPH at Bonneville Salt Flats setting the record August 7th 2021 at 205.744 MPH reset the record in 2024 to 211.830 running to mile four. Top speed 2024 mile five 220.672 exit speed 221.587
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