Quote:
Originally Posted by THEFERMANATOR
The ETEC may still carry the FICHT stigma, but to many the OPTIMAX still carries the OPTIPOP stigma that so many of them were known for from 98-02. As for the air injection, I thought it was set to 120-130 depending upon the engine as the air pressure has to be able to overcome the compression in the cylinder to inject the fuel in. MANY of the failures on BOTH the OPTI's and FICHT/ETEC was due to the fact that DFI was a new technology and they didn't know that they needed a special oil for them. This caused alot of air pump failures in the OPTI's and carbon build-up in the FICHT's. They have gotten alot better in recent years though. Have you considered the YAMAHA 150 4 stroke? Everybody says it is a strong 150(almost 175HP) and has a proven track record. If I had the money to buy a new engine now, but new I couldn't afford a new one when the warranty runs out. 4 stroke would definately be my pick to buy. You do have timing belts and such to worry about with them, but it isn't any different then modern cars with small 4 cylinder FWD engines.
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I've heard of slang names for just about every motor(sneezuki,yamadog,johnstone,evincrude,etc). I'm sure the Etec is a ok motor. All NJ marine police boats are powered with Etecs. I personally would not buy one because I think of it as a glorified FICHT motor. All Optimax motors run their fuel/air pressures at 90/80 psi,+ or -10psi. I'm not sure about the 250xs opti thats built by the racing division. The f150 is a good motor. I am very suprised with some of the boats I have seen those motors pushing. Timing belts on outboards far outlast the timing belt on cars. Probably because they are tucked up under the cowling not subjected to road grime and oil. I have changed perfectly good timing belts on f225's with almost 2000hours. I also changed a timing belt on a f350(not easy) with only 100 hours. Mostly because the installer of the powerhead put the cam pulley on upside down. Either way they are both easier and cleaner than doing the belt on my VW(which I have also done). I personally prefer 2 stroke over 4 stroke. Newer 2 strokes are almost as fuel efficient are lighter and have instant power.