IowaRV9Dreamer
Well Known Member
I want to assemble my engine core so I can work on the cowl. My plan was to use the old/trash bearings to hold up the overhauled crankshaft. The nose bearings seem OK but the middle and rear bearings do not fit the case. I think the case dowels may have been changed. This is what the dowels look like:
This is an OLD wide deck O-320-E2A. I'm having trouble finding the correct bearing. The latest PC203-3 (dated 2011) lists 18D26098M003 (I need the M003 for my crank). I'm not sure that is correct. The picture on aircraft specialties doesn't look right with the oil hole not in the center.
I have a sheet from Superior Air Parts that tries to decode 4 different dowel types into Lycoming engines. If this is a "Straight" dowel, it seems to indicate that I need SL11020 bearings (superior part number). That seems to at least look right on Aircraft Specialties.
Any idea how I can find a solid cross reference for these bearings? It seems that in the 50 years or so since this engine was new Lycoming has changed part numbers and dowel designs a lot.
Also, would it be OK to buy new bearings, assemble them into the case with crank, and then remove and re-use them later after the case has been overhauled? My goal at this point is to just temporariliy build up the lower end to assist in cowl mounting.
If anyone has 4 old used bearings that I could use for testing, I'd be happy to buy them!
This is an OLD wide deck O-320-E2A. I'm having trouble finding the correct bearing. The latest PC203-3 (dated 2011) lists 18D26098M003 (I need the M003 for my crank). I'm not sure that is correct. The picture on aircraft specialties doesn't look right with the oil hole not in the center.
I have a sheet from Superior Air Parts that tries to decode 4 different dowel types into Lycoming engines. If this is a "Straight" dowel, it seems to indicate that I need SL11020 bearings (superior part number). That seems to at least look right on Aircraft Specialties.
Any idea how I can find a solid cross reference for these bearings? It seems that in the 50 years or so since this engine was new Lycoming has changed part numbers and dowel designs a lot.
Also, would it be OK to buy new bearings, assemble them into the case with crank, and then remove and re-use them later after the case has been overhauled? My goal at this point is to just temporariliy build up the lower end to assist in cowl mounting.
If anyone has 4 old used bearings that I could use for testing, I'd be happy to buy them!