Merc 2stroke 50 to a Merc 4stroke 50

[CWCW]

Has anyone ever owned a Mercury 2 stroke 50hp and repowered with a Mercury 4 stroke 50hp? What differences did you notice?

 

[longshanks]

Re: Merc 2stroke 50 to a Merc 4stroke 50

I have a Mercury 50- four stroke EFI, and have operated 2-stroke carb'd 50's in the past.

You'll need steeper-pitched props for the 4-stroke, in the neighbourhood of 11-15 pitch, to get similar performance to the 2-stroke. It might weigh a bit more than the 2 stroke, but won't smell, won't burn as much gas, and with EFI, it starts and runs very smoothly and reliably. Mine's very quiet also, much quieter than my 2-stroke 60, both at idle and WoT.

In this size class, I'm thinking they perform very similarly. You'll be doing oil changes though.

cheers

 

[CWCW]

Re: Merc 2stroke 50 to a Merc 4stroke 50

The task of changing the oil is not a problem for me. Im used to changing my own oil in all my engines (truck, car, lawn mower). Is it expensive to buy the oil for the change? How much does it cost per oil change if you do it yourself? Every 100hrs right? Im actually not repowering a boat but i am looking at buying a new boat and im thinking of going with the 4 stroke instead of the 2 stroke 50 Merc that is on the show floor.

 

[Don S]

Re: Merc 2stroke 50 to a Merc 4stroke 50

They only take 3 quarts, and nothing special about the oil. Cheaper than 2 stroke oil.
Go to Walmart and see what they charge for a quart of Quciksilver 4 stroke outboard oil........ Yea, Wallyworld carries it.

 

[longshanks]

Re: Merc 2stroke 50 to a Merc 4stroke 50

Hi again CWCW.

I read your post also in the Mercury section. I bought my '06 50 used, and it had some problems with it. Mercury replaced the powerhead under warranty. As far as I'm concerned, it's pretty much a new motor, and it is everything I could ask for in an outboard. Once propped correctly (make sure your dealer sets you up properly with a prop that spins @ your max RPMs -- ~6000), my motor was out of the hole in an instant, and really pushes my skiff along well. Idling, you can hardly tell it's there, and it is quite fuel efficient.

I posted a video of it on youtube @ http://www.youtube.com/watch?v=LxqS3HEptj4

There are a couple of other videos on there as well. As Don says, oil and filter changes are a snap, and it uses any old 10W30.

hope this is helpful to you.