just after some info on what you can do to the 59ci mercs .
i seen a lot of you guys are running the 40hp's on tinny's over there in the states .
i run a 55 seapro (pretty much same as a 60hp) on a slt boat over here.
the motors pulled apart at the moment and getting rebuilt and while its apart i wouldn't mind seeing if i can get a few more hp's out of it.
any thoughts??
i have heard of guys building tuners and porting the reed blocks???
since they don't have heads ,dose shaving some off the crank case help???
have heard it works on the mercs..

any help appreciated