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Old 22 January 2007, 06:40   #31
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Originally Posted by Stoo View Post
It amazes me that virtually all of the manufacturers claim the same "trophies"... How is that Opti, Etec and Yamaha can all (simultaneously) claim best fuel efficiency, best power, best torque...
I believe that their claims relate to specific points in the rev range. For instance, ETECs are very good at trolling and mid-range efficiency but this really drops off at WOT compared to fourstrokes.
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Old 22 January 2007, 06:48   #32
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I don't think there is much difference between ANY of the engines at WOT - they all guzzle it. My Suzuki 2 stroke 225 uses about 85l an hour WOT as does the 4 stroke.
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Old 22 January 2007, 08:12   #33
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Agreed - they all guzzle at WOT.

The point I was trying to make is that manufacturers claim that their engines are the most efficient, without stating at what rev range (or sticking the details away in the small print).

Check the efficiency graphs out in the link below. The E-Tec 50 is the most efficient throughout most of the RPM range but at not at WOT.

http://www.leisure-marine.com.au/Evinrude/article6.asp
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Old 22 January 2007, 08:53   #34
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Quote:
Originally Posted by GuyP View Post
I believe that their claims relate to specific points in the rev range. For instance, ETECs are very good at trolling and mid-range efficiency but this really drops off at WOT compared to fourstrokes.
Exactly. I have a stack of lovely brochures showing each engine "clearly" as the best choice. So once again, I'll choose my new engine based on the nicest colour!
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Old 22 January 2007, 12:46   #35
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Quote:
Originally Posted by BogMonster View Post
I thought the article was interesting but a couple of litres of oil a year wouldn't sway my decision significantly.

I agree - a comparison of "real world" engines in the 90-150hp range would be more useful, I like the mag but from the three issues I have it seems RIB Int does tend to concentrate a bit on the top end of the market, 250 or 300hp engines, 100k boats and stuff that most of us will never have on our shopping list! What they need is a shoot out of 20k boats and sub 150hp engines instead
Yep I am getting tired of it myself. I used to hanging out for it, but this forum which I found by accident is much more fun.

By the way, its not so much the cost of the oil, its the getting rid of the old stuff is the problem. If I was a big user, I think I would opt (pun) for the ETEC, over spec it and go at half throttle.
I seem to recall that they can build up oil and splutter if you dont wind them on every so often
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Old 22 January 2007, 12:55   #36
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Not in this part of the world
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Old 30 January 2007, 17:49   #37
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You're right, all the manufacturers build a good comparable product nowadays. E-TEC hit the sweet spots for me: Low maintenance, very efficient in the low end and mid-range. When I'm running my RIB I need to be worried about other things such as hours or use, changing oil, etc. I'm busy worrying about coaching, safety and racing sailboat repairs and upgrades. The RIB should be absolutely worry-free. I'd rather take 2 minutes to top off the oil tank than change oil. It's quiet enough that I can easily carry on a conversation with my sailors while running alongside.

After running every day for 2 weeks as a support boat at the Miami Olympic Classes Regatta, I couldn't be happier with my choice. The 90 E-TEC lived up to its billing. Started every time at the first touch of the key. Long term reliability? Too soon to say, but the months of digging I did online left me more than comfortable. I only used about 1/2 of the oil reservoir.

One thing I noticed is that it's not terribly thrilled with being run out of fuel. It starts and runs rough until the fuel system is happy again. I probably used about 1-1.5 quart of XD100 during break-in high oiling) and 4-5 6.5 gallon (US) tanks of fuel over 11 days of running.

Whoever asked for photos, I don't have any, and the boat is 1500 miles away until the end of March!
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Old 30 January 2007, 23:22   #38
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hi all...

just going to chime in and say that i love my e-tec!! although mine had an annoying problem with the oil alarm going off on rough water... beep beep beep beep... just when trying to concentrate on what's ahead....Doh.. bad module programing... mmmmmmm

anyway the fact that i can pull start is very comforting even though i'm running two batteries. no break in period and almost zero maint., less weight, less moving parts... runs like a sewing machine! what's not to like!?

my dealer really likes the yamalube so i've been running that but thinking about a re-program to run the more efficient oil xd100... wondering if it's worth it??
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