FLEXPLATE/FLYWHEEL???????

[79 HUSTLER]

I just upgraded from a 18 jet boat to a 29ft cat and have a ???. I will be suppling the motor from my jet to go into the new boat, and here is my question. Right now I have a flexplate(I forget the brand,but I know it is SFI(?) approved and ran around $375-$400) that is hooked up to my 540" and would like to know if I need to change to a heavyduty billet flywheel so that this one does not tweek and flex since now it will be connected to the outdrive instead of a jet. Or is there not that much of a difference in rotating weight while starting an outdrive since it will not be in gear? Any help would be great.
Thanks 79 hustler

[Craig]

Are you talking about using a flexplate, like one in an automatic tranny, or a flywheel,like one from a manual tranny car?

[dorC]

A bravo drive will require a flywheel. This is to give enough rotational mass to keep the engine running during shifts. I can't recall for sure, but I thought that the coupler also bolted to the flywheel. Some people have gone to flexplates and although the engine lopes nicely, they generally have not been satisfied with the results.

[not guilty]

Its also hard on the gears without the heavy flywheel to keep them from "chattering " at idle. NG