---

I have a 1991 guardian 19 that will need repowering soon. It has a 1999 Evinrude 150 Ocean Pro. I like to cruise 27-30mph. It seems many members have the DF140 Suzuki, and are happy. Could you tell me the cost of install, and the fuel use at 3 mph trolling, and cruise at 30 mph. Also did anybody go from a 150 2 stroke to the DF140? My engine has been reliable, with $500-700 repairs a year, but am approaching 2000 hrs, of salt water use, and don't know how much longer she will last.

---

Hi Rockfish,
I get in the area of 6mpg at a cruise of around 30mph over longer distances. Top speed is around 42-44mpg. I repowered from an Evinrude 150 2 stroke. With that motor, I was getting under 3mpg. While I realize I won't recover cost of a repower through fuel savings for a very long time (if ever), my range is now well over 300 miles. The noise and starting are both much easier as well.

I spent about $10k + tax for the engine, plus perhaps an additional $1k for rigging components. I did the install myself.

Dennis

---

I suspect the Guardian at 19 feet is just enough heavier that it may be more comfortable with at least 150 HP. The relatively new Mercury 150 HP four stroke is getting rave reviews but any new four stroke would be as good, I'm sure. Buyers and reviewers seem to really appreciate the ease of access to those parts of the engine requiring periodic maintenance and there are several propeller choices to consider.

If there is an alternative 150 four stroke that weighs less than the Suzuki at an equally affordable price that would be worth strong consideration.

---

I thought of the other 4 stroke engines, but it seems they are 50+# heavier than the DF140. Also talked to my mechanic here about the 150 Etec, he said that they are seeing more etec repairs than Yamaha for the same amount sold. then there is the price of the 150 four stroke, and etec being $2000, or more than the DF140.

---

The lightest 150 fourstroke option would be the Merc 150. A G1 ETEC 150 will be a bit less weight than the Merc (when the weight of the full 3 gallon 2-stroke oil tank is included). A G2 ETEC 150 would be significantly heavier.

The Suzuki DF140A will save about 50 lbs on the transom compared to the Merc or ETEC, which is definitely a plus. I have seen that engine hung on a 19 Outrage II, and the reduction in stern squat was noticeable compared to my same boat with a heavier 150. Dennis reports very good performance with his -- it seems like one of the better options for this hull.

My top 3 choices (in no order of preference) for this hull would be the DF140A, G1 ETEC 150, and Merc 150 Fourstroke. I also feel the MERC 115 ProXS Fourstroke w/ CT gearcase is another good option for the Outrage 18 hull, and maybe even for the Guardian 19 hull depending how heavy it is.

---

I'm also repowering my 1989 18 whaler, I've chosen the Suzuki 150 with fly by wire. I haven't had it rigged yet but price I got was 16,000.

---

I'll be interested to see photos of the stern trim with the Suzuki 150. It's definitely at the heavier end of the spectrum, but with 2.9 liters of displacement and 16 valves it should be quite potent! Keep us posted!

---

Great thread here. I have been looking for a while to see the difference in economy between a "legacy" two stroke vs. a modern 4 stroke, specifically a Suzuki DF140. I have a 1984 Outrage 18 with a 2003 Bombardier Johnson 150 motor. Motor has approx. 1200 hours on it. Runs great. Problem is - it runs great. At this point I cannot justify a re-power because the engine runs so well. But if I needed to re-power now, I am convinced that the Suzuki 140 is the way to go - for me. Weight is the primary concern. Yamaha 150 motor is heavy as you all know. Was at the marina this morning. Talked to a guy who had two Suzuki 140s on his boat. While both engines were at idle dockside, you could barely hear them. Two motors! I just couldn't believe it! Am excited to hear that an owner of the same Outrage model as mine now has a range of 300 miles for a tank of gas with the Suzuki 140. I could easily travel out to the "ledge" here in St. Augustine (60 miles +/-) fish, then come back and burn about 1/2 tank of fuel. That's crazy good. Thanks all for posting the info.

---

Peter, you and I have the same problem! Mine's a 1992 Yamaha 150 (2-stroke) with about the same number of hours. As much as I'd like to hang something new back there, it's very difficult to justify.

I guess these are good problems to have.

---

I'm curious to where you were able to purchase your motor for the amount you spent. I too am in the repowering market....do they have any more at that price?Boomerang206

---

Hi Boomerang,
I bought it in January 2015 at the Seattle Boat Show. Paid for it then, and brought it into the dealer's shop a couple of months later to have it hung on the transom. I recall there was also a $200 rebate from Suzuki at the time as well.

Dennis