The front journal also had some water damage.
Now the question is am I going to be in spec after all this sanding & polishing.
Before checking clearances I am going to check for a distorted block/crank. Our local Studebaker guru Gary Payne suggested it might be a good idea since the block was really an unknown. He has seen situations where a block was distorted enough to seize the crank when all the journal caps were in place.
Here the front and rear caps are in place and the crank turned freely. I just snugged the caps in place.
Next I pulled the crank and cleaned off all the lubricant I used for the rotation test. I then carefully put the crank back in the block and put a piece of plastigage on the top of each journal. I then carefully replaced the caps and torqued them down to 90 fp.
I’m using plastigage with a range of .001 to .003. I need to see if the clearance is between .0005 and .0025 – it certainly won’t be any less than .001.
The plastigage residue is a bit sticky. I didn’t want to damage the bearings so I tried a few solvents, but nothing worked. By chance I found out the WD40 did a nice job of dissolving the residue.
Time to clean up the rod journals and do the same tests with a set of .001 service bearings.