Mercruiser 7.4 454 gen4 to a gen5 rebuilt block
 

Aloha boater brothers,here is my problem went from a gen 4 to a gen 5. I have replaced everything to gen 5,but my gen 5 flywheel is on the wrong side for my housing for starter I have the bottom starter mount and I read I can flip flywheel over and then I would have it the way it will engage in my starter ?or do I have to change my housing to gen 5 topmount and get different transom engine mounts....ect ect.thank you for helping with my confusion .Mahalo

The flywheel only goes on 1 way

by flipping,,they ment putting the ring gear on the other side of the flywheel.you can bang the ring gear off,,but need to heat it up enough to expand it,then it literally falls on.may have to tap it in places afterwards as it can distort a little some times

Lots of YT vids on how to safely remove and install the ring.

Heat the ring and tap it over with a block of wood and a hammer

I heat the ring gears in an oven to about 450 for 30 minutes or so and they fall right on.