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Briggs flat twin ID question


jlasater

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Posted
So...the old Cub 582 project is either going to be finished or hauled off to the recycler. The twin engine I put in it as a replacement died and upon further reading it was probably my fault. The origional engine had a small sheetmetal trough that fit in the oil pan and the oil slinger swung through it. so..I moved that over to the "new" engine. The oil slinger itself was probably not compatible with it and didn't lube the cylinder walls well enough. I was at one of the metal recycler places around here and came upon another flat twin (horizontal shaft) minus most of the sheetmetal. Pulled the cylinder heads and oil pan off. The cylinders had a lot of what looked like oily metal particles in there (enough that the crank wouldn't swing all the way around) but the engine turns over fine with no grinding once I cleaned that out. My real issue is ID'ing the engine. The sheetmetal that usually has the ID information is gone. Do you guys know if there's a place on the block of these engines that might have the number? It's the flat twin 'L' head horizontal shaft engine.
Posted
No ID that I'm aware of. You may have to measure the bore and stroke to determine the displacement to be sure. The thing is that if you can salvage the project by combining the engines then go for it. Most of the carb. and sheet metal should bolt right up.
Posted
I have a horizontal twin, M/N 422437, Type 0734-01, S/N 85103112 that has the dipper and oil dam in pan. The basic footprint of engine has been the same and the bore and stroke may have changed over the years going from a 40 CID to 42 CID.
Posted
Briggs parts look up is usually by series, so any one of the 422xxx numbers will get you to general parts, like carb kits, head gaskets, etc. There are two different style carburetors for those, the 3 bolt fuel pump, and the 4. Both will be listed in the entire series. If you need parts like a crankshaft, or anything that would be application specific, you'll have to do some measuring and go talk to your dealer.
Posted
I should be able to get a reasonable read on the engine shape by doing a compression test outside of the tractor frame, no? Using a car battery and a set of jumper cables.
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