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Does anyone have the "definitive" answer on internal engine parts will interchange between the B3 and a B6 SOHC from a Merc Tracer? I know the bore/pistons are different but the stroke is the same. Will the rods & crank interchange? Is the B6 SOHC a steel crank? Any differences with balance weight, wrist pins, rod length & weight, main seals etc?
I can't find a good used B6 anywhere reasonable, so I may as well build one from scratch. I found a Tracer at a local J/Y with 91K miles on the odometer. It says "bad motor-good auto" on the windshield. They said they have no idea what was wrong with it and never tried to start it----but it will turn over. Could have a rod bearing out, cracked head, who knows. If I can get it for cheap I would take my chances and pull it apart to do a rebuild. They have another B6 that they used in their "yard car" as well. It supposedly ran great but blew a head gasket. Possibly has a cracked/warped head but good short block. I think I can get both motors for under $100. If most B3 parts interchange then all I really need is a good block, pistons and head. I can even do a re-bore & new pistons if needed.
I can't find a good used B6 anywhere reasonable, so I may as well build one from scratch. I found a Tracer at a local J/Y with 91K miles on the odometer. It says "bad motor-good auto" on the windshield. They said they have no idea what was wrong with it and never tried to start it----but it will turn over. Could have a rod bearing out, cracked head, who knows. If I can get it for cheap I would take my chances and pull it apart to do a rebuild. They have another B6 that they used in their "yard car" as well. It supposedly ran great but blew a head gasket. Possibly has a cracked/warped head but good short block. I think I can get both motors for under $100. If most B3 parts interchange then all I really need is a good block, pistons and head. I can even do a re-bore & new pistons if needed.
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