912 engine weight old v's new

[Dusty]

I am soon to remove my high time early 90's magnesium case engine and replace with a new 80 hp
i have been told there is a substantial gain in weight (10kg?) and will have to do a new weight and balance
Is this gain in weight really this much? Both engines don't have the slipper clutch.The new one has the 100 hp ratio gearbox. Has anyone done a weight comparison?

[rv9ralph]

I can't answer your question on weight difference, however, an engine change should require a new weighing and weight and balance calculation.

Ralph