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Steve,
Hard to tell unless you measure the journals.
The standard procedure is to have the rod journals reground undersize and use undersize bearings to compensate. The old Tenifer process is gone, as a bath in molten cyanide was part of the process with its obvious environmental and workplace safety implications. There are rehardening processes available but these are claimed to be not as good.
Conventional wisdom is just to skip the hassle and locate a STD/STD used crank.
__________________
'66 911 #304065 Irischgruen
‘96 993 Carrera 2 Polarsilber
'81 R65
Ex-'71 911 PCA C-Stock Club Racer #806 (Sold 5/15/13)
Ex-'88 Carrera (Sold 3/29/02)
Ex-'91 Carrera 2 Cabriolet (Sold 8/20/04)
Ex-'89 944 Turbo S (Sold 8/21/20)
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