Mercury 90HP Outboard (3-Cycle) || Carburetor Upgrade

[oring1]

How much of an upgrade can be made by installing new carburetor? Can you upgrade from an 90HP to a 125HP by installing a different/bigger carburetors? What specs are needed to determine the biggest upgrade that can be made?

 

[roscoe]

little
no

 

[Chinewalker]

To upgrade, sell the 90 to someone who wants to upgrade their 60. Use funds from selling your 90 toward purchase of 125. Upgrade complete.