150 Mercury Pro XS

D

Duke01

Member
Is anybody running a 150 Mercury Pro XS (2 stroke) or something similar on their V20? I am curious about performance. There is a 2010 available that I am considering as a repower for my 1980 Merc 200.

I would appreciate any feedback or comments.

Thanks, Duke
 
that is a good motor, will probably be just as powerful as your old 200 if not more. It will burn less fuel than your old engine. Just be aware, optimax type engines run well, till they don't, and they get very expensive when they don't. You will need to run the DI type oil, and run good e free gas if you want it to live. Personally, I'd rather give up some mph and try to find a four stroke 150. The proxs is a bass boat type engine( hp is underrated on xs type motors, makes at least 175 hp), designed to run on a lighter boat and run hard. The standard 4 stroke mercury 150 is a good all around engine more suited to V20s.
 
Thanks Spare. I really appreciate your feedback. It is coming off of a Stratos walleye boat which is the same base weight as the V20. He has it loaded up with 6 batteries (36V trolling motor) and lots of gear. He runs at 40 mph when weather permits with a max of 43 +/-. The prop pitch should be pretty close, it is stainless steel.

He just lowered is price to me to $6,000. It has 350 hours. He is replacing the 150 Pro XS with a 200 Suzuki. His offer is hard to pass up. I struggle with repowering a $4,000 boat with a $15,000 motor, so I am going to give this a shot. He has replaced fuel pump, water pump, belt, plugs, etc. I don't think that he has replaced the compressor.

Fall walleye season is underway in the great lakes. We will try to coordinate a motor transfer probably sometime in December when water temps hit the low 30's (much too cold for me to be on the water).

Thanks again, Duke
 
Just following up on this posting: The purchase never happened - the seller decided to keep the 150 Pro XS. The old Merc lives on.
 
I am concerned about reliability, but the only ongoing challenge is starting.

She runs great once started. I usually run 10 miles or so and then troll with my 9.8 kicker motor. I have no problem starting for the return trip after 4 hours of fishing. She starts right up.

The problem is cold starting. Started fluid works when I use it. Otherwise it takes 5-10 minutes of turning the key to get her started. I typically have the motor raised for storage and traveling. This year, I will not have to do that since I am planning on rack storage.

I do need to clean and lube the bendix on the starter so the flywheel engages properly. That is on my to do list for this spring.
 
Understand, typical of older carbed mercs. Had an 86 with same issues. Once warm, just look at the key and she would start.

I would keep a new fuel pump in it, that seemed to help.

Also had a sequence

squeeze ball
raise throttle lever half way
hit enricher on key 3 times
slow count to ten
turn key
cross fingers

I'm on my third engine with boat. first one lasted until 94. second one till 2015. six years on this one so far. All merc/mariner 150's.
 
cold start, prime bulb, turn key over with key pushed in till it hits, repeat process without pushing in key, if it doesn't hit, hold key in till it does. Normally its should fire up and idle, you may have to bump the key in a couple time till it gets warm enough to idle. You shouldn't have to raise the warm up lever unless you've flooded it. You may need to do a sync and lync on the carb linkages. These a fitting on one head with a hose to it, second port is open. it should be closed between the ports when cold, after it warms up, it should be open and allow air thru the port. check it
 
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