Join Date: May 2007
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Re: Yanmar 2gm20 price?
First, it's "2YM15". it is 14 hp. That price sounds about right for a unit that includes a reduction gear. I don't pay attention to 2GM20's as they are raw water cooled. I did pick up a 2GM20F on Craigslist in Seattle for $1200. I sold my old one for $900 on e-bay. So, for $300 plus about $500 in tools and materials, I swapped the engine myself.
I have seen good units for around $2500 - $4000. I don't think I would spend more than about $2500 for a used motor. While there are a lot of used 2GM's out there and parts are still available, they are considered by many mechanics to be obsolete. The 2YM15 is only 2hp less and will bolt to a shaft/flange sized for a 2GM pretty easily. Some engine bed modification may be necessary but shouldn't be anything more than some new mounting holes.
You can buy a remanufactured 2GM20F for about $3500 plus core and shipping. Shipping will likely be at least $500 x 2. Once to ship the motor to your location and again to ship the core back. Now you're at $4500. Engine may have a guarantee but how good is that guarantee when the seller is in WI and you're 1500 miles away. Lots to be said for a Yanmar warranty with lots of dealer support.