Re: Rear Main Bearing
You can run without the drain tube if the hole in the rear main bearing is open. Ford did not tack weld the tube to the bearing. Rebuilders most likely did that.
If you are going to replace the missing tube, use the 3/8" diameter one. Be careful not to inset the tube too far into the bearing because it will impede the drain oil flow.
I fixed a cracked rear main bearing with JB Weld and it worked for many years. So if the area is thoroughly solvent cleaned, the JB Weld will work. If the tube falls out, no harm done as the engine will run fine.
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Bob Bidonde
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