and also look like it was missing 1 and 2
That would be the oil slinger and snap ring...
Be best to install a seal from these boys and forget about the factory set-up...
Fits 36-54 years...61"-74"-80" motors
If ya wanted to jump into today's world of Heavy Freak-en Duty with a 69-up Timken bearing on that side.....
Knucklehead left side case 1941-1947
Timken style bearing
This case is a faithful reproduction of the left-hand 1941-1947 Knucklehead engine case except that it has been made to take the Timken main bearing. With this case you can build your knucklehead using a '57-'81 pre-commonized crankshaft, which uses the stronger Timken bearing. It is made from 356 aluminum alloy which has been heat treated to T6 specifications. The cylinder deck and bore, the motor mounts, and the main bearing bore are all left with .040-.060 of material so that it can be perfectly matched up to your original right hand case, which we can do for you if necessary. If you want your motor to look like it did when it originally came from Milwaukee, then this is the case for you but with the later, stronger, Timken bearing.
You know.....If you was a Hot-Dogger from Hell and wanted Peace of Mind doing the Dirty-Dog on a straight bearing motor of yesteryear's design...The above case would fit the bill and keep a bone stock look...
Gotta say that the one inch shaft will take a little abuse...My 52 has a 4-3/4 stroke on the straight bearings. Been a watchful eye on maintenance over the years.
When I first built it so many years ago...The lower end got new case bushings and was fitted up with STD rollers...Granted, I don't beat the crap out of it every time I throw a leg over it. But do roll though the gears kinda hard...It's fun on this bike, Ya know..??
If I was going to play alot harder...Would love to have the Timken on that side.
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