merc 4 inch crank qustion

do all 1949-50 merc flatties have 4 inch cranks from the factory?? thanks

 

Yes.........OLDBEET

 

But after 56 years you can't be sure.
"it says mercury on the heads" don't mean a thing.
Back in the 50's rebuild shops used what ever crank was next in line.

 

Iv'e got a 4 inch crank!.........OLDBEET

 

All U.S. made '49-'53 Mercs left the factory with a 4" crank. Then people started swapping heads, cranks and other parts from engine to engine. Just because an engine says Mercury on the heads does not mean it has a Mercury engine or crankshaft underneath. The only way to tell for sure is to measure the stroke.

What part of Wichita are you in?