4A STD
MF1
1810083
Good news Kurtis - your bearings are STD 'standard' size (your crank never
turned down to smooth out worn/scored journals). You can get bearings in
.010, .020, .030 to take up space after a crank grind and nowadays even .040,
.050, .060 oversize.
You apparently have a virgin crank shaft..kind-of! Or maybe someone threw in
a new set of standard size but didn't grind the crank.
I don't know what the other numbers means (maybe 'MF 1' means 'Massey
Furguson first set' ?)
Carl
'63 TR4 since '74 .. with Vandervell Brand .020 crank bearing shells at the
ready..
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