Down here a lot of the fishing charter
guys go through outboards every couple of years. When we first moved here, over four years ago, they were all running Yamaha two strokes. Then some of them tried the E-tecs, and i was in the market for a power boat
then and was really paying attention. I was trying to decide which outboard
to spec for a new 22 ft. panga hybrid from Andros. I talked to one of the charter
guys here who had just sold six E-tecs and was going to Yamaha four strokes, at that time. He told me that they frequently hit sand with their outboards on charters, and when the intakes got clogged on an E-tec the motor
would shut down and he would have to call a service
guy with a computer to come straighten it out. With the Yamahas, you just clear the clogs and start it back up. There is one E-tec dealer here.
Lately, they have been going back to Commercial
Yamaha two strokes in the 200-250 HP range. Which you cannot buy in the US. They come here from Japan
directly. I asked why, and was told that the reliability
, cost, and cost to operate were much lower for the two strokes than anything else out there. One guy told me he could take a commercial
Yamaha two stroke all the way down to the crankshaft and rebuild
it all the way back up in one day using about ten common tools.
If you ignore the marketing
hype, and just consider the motors, it's pretty obvious what the differences are going to be. Four strokes are quieter, and more expensive.
Two strokes have a better power-to-weight ratio. All of them together probably pollute as much as Al Gore's jet. If it were not for the US government
, everyone in the US would still be running two strokes. Other than the regs, there's no good reason not to. Engineering wise, they are pushing fewer parts
around. Any engineer
will tell you this is a good thing. If you know anything about Milspec, and have ever done a MTBF calculation based upon parts
count, that pretty much says it.
One thing I have heard a few times is that you want to be careful how you store four strokes. Some of them do NOT like being stored horizontally.