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TylerBurich 06-12-2012 09:48 AM
Merc 420hp
 
Were the 420's internal balance. Mine are in a 1988 Formula 311. When I pulled the starboard motor it had a neutral balancer and a neutral flywheel. ...??? Is this right? It did have an eagle 4340 crank which I know isn't correct. Thanks for the help in advance.

mr3dman 06-12-2012 10:02 AM
the 420 came from merc as an external balanced motor


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