So do most people use a riser plate then in order to accommodate a 20" motor on an 18" transom?
Looks like my transom is about 4.75 - 5" above the cavity plate on my motor. Its about level with the fins above the cavity plate.
I just spent a lot of time and effort rebuilding the transom so I'm not particularly motivated to remove it all and drill holes in the transom in order to be able to use a riser.
Am I better off with a short shaft? Looks like fuel economy took a major hit on my last trip as well.
Originally Posted by kiwiboyd
These are the following shaft lengths for the current f470's Z80226 is a 15" transom Z80224 is a 18" transom Z80247 is a 20" transom Aztec F470 is also a 20" Berry f470's started as 20" and now are 18" The army buys Z80224's and the Air Force buys Z80247's. the most common is the 18" transom with a 20" shaft motor. The 15" transom is seldom sold as only Tohatsu make a 50hp 15" outboard, everyone else has 20" shafts.