Re: upgrde 30hp 4 strke merc to 40hp ?
sutton: you need to post this question in the "outboards" forum. <br /><br />This one is designated as "nothing to do with boats" and is used for politics and general discussion.<br /><br />Before you post your question, you might consider searching so that you don't ask the same question someone else asked recently. I believe, if memory serves, that the answer to your question is "no". There have been lots of folks on this forum who want to do what you're talking about. The consensus is that its cheaper to sell and buy another motor but a search will give you all the relevant conversations.<br /><br />Good luck!