Engine Spacing?

I am currently designing a trimaran and need to decide how narrow I can make the center hull.
Obviously I want to make it as narrow as possible and I am therefore only limited by the engine width. The boat will be using Twin Mercury Optimax 225’s. I’ve checked all over the net but can’t find information on how close you can put twin motors together, HELP!!!
Mercury also doesn’t supply dimensions for the engines, anyone have a clue how wide these babies are?

 

using two OB i figger you can make the transon bracket wider than the hull
with two IO you can place one a little in front of the other to save beam

 

welcome to crap marketing by the engine manufactures. You might find something on this site supplied in a previous forum

http://www.marinepower.com/download/dosearch

 

this might be ok

 

Thnx

Thnx a mill guys, I'll see what I can do!