Yamaha F225 (4 Stroke) vs. Yamaha Z250 (2 stroke) HPDI

[Mr. Sandman]

I have read similar things as well. My bet (for what its worth) is to go for the 2 stroke . Both are good engines and there is no "wrong " decision here, but these are my reasons

A) cost per HP...4 stokes are significantly more costly to buy
B) Weight: for a given HP, the added weight is also significant
C) HP...ratings vary but look at HP at the prop 2 cycles tend to deliver what is advertised, but 4 cycles tend to come in noticably less (*in some cases*)
D) Fuel eff in the newer FI 2 cycles have gotten quite a bit better in the last few years too and while the 4 cycle will probably win out I don't think there is a huge gain in fuel savings as there once was. On some models I think the 2 cycle actually is better on fuel. (but not by very much)
E)Also while not as quiet as a 4 cycle they have been improved quite a bit here too. 4 cycles are quieter and do run better at low speed. But I don't think the cost justifies it (yet) for those savings.
F) There are also lot more moving parts in the 4 cycle.

Again, I honestly don't think you can make a wrong decision here, and I do they that 4 cycles will rule the day...but IMO 4 cycles have a few more years yet. They need to get the weight down, and HP up and cost down.

Bottom line: bang for the buck...2 cycles still have the upper hand but the 4 cycle is a finally mature enough to consider for reliable power.