Geacase recognition question

[Carter Powell]

Is there a difference between stock preload and non preload V-6 merc gearcases. I have all the needed parts to assemble a non preload gearcase and need to know if there are differences between the two cases or are they the same?

Thanks, Carter Powell

[1BadAction]

yes! most definately. the pre-loads have a lip in there that gets in the way. Trust me, I made that $250 mistake :(

[THE FAST ONE]

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[MadTing]

The preload gearcase has the bearing race installed before the driveshaft bearing. With the non-preload gearcase, the driveshaft bearing is installed first, then the bearing race, then an outer threaded nut to hold the bearing race in place. They are not interchangeable.