Originally Posted by yesimapirate
sounds like a good option vs paying almost double for the new propane motor. any negatives?
I've done a propane and nat gas conversion for a honda generator and the one down side is that sometime the conversion will preclude you from running gas based on how it's done - I don't think that will be an issue in this case.
Also, the cleaner you start with the engine the better. If the engine has run gas in it before make sure it's run clean. I imagine - similar to the honda gennys there are similar conversion kits for their outboard smaller engines.
One other downside is the amount of energy gen'd for propane vs. gas. Propane can see about 15-25% less efficiency because of this.
There also seems to be a real aversion among many /other/ boaters to have propane on their boats in a fuel source position (rather than stowed). I don't know if this is well founded but if you google you'll see many a folk say they would never, ever use propane as a fuel source....compared to gasoline
I haven't done much digging but I assume there are a bunch of places that will do these conversions for you or offer a kit in order to do them.