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08-16-2019, 04:29 PM #15000 RPM
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ETEC durability vs Yamaha/Mercury 4 Strokes
Have a buddy who has a fleet of 5 etecs, twin 150hp gen 1 etecs on a 26' Stanley aluminum and 3 v4 115-130hp engines. The twin engine stanley has been blowing motors with under a season of water taxi use and warranty has been painful this year. Going on 3 months of a wait since the blown motor was dropped at the dealer and still have no engine. He blew another one yesterday morning with 413 hours and is now without his main water taxi.
The owner is talking about switching to Yamaha or Mercury 4 strokes as replacements. Do the 150hp yamaha's or mercury's run about the same performance in twin applications as what the ETEC's do? He is very happy with the performance of the Evinrudes but blowing motors every 4-600 hours is getting old.Last edited by checkmate45; 08-16-2019 at 04:50 PM.
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08-16-2019, 04:42 PM #2Screaming And Flying!
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Most of the new motors are like no need for a fixem book.....or parts....The guy selling them is allways saying..... the best.... till 5 years pass then he is selling the best........
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08-16-2019, 04:52 PM #35000 RPM
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08-16-2019, 05:46 PM #4Screaming And Flying!
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Blown how, what let go?
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08-16-2019, 05:56 PM #55000 RPM
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Usually cylinder 1 or 2. They lose all compression. Looks like it is typically injector failure as it shows damage like detonation and the tip of the plug is full of aluminum. None have thrown an injector code but Evinrude always puts a new injector on the failed cylinder. I think there was one motor that lost cylinder 3 or 4, i cant remember which side it was on
Last edited by checkmate45; 08-16-2019 at 06:00 PM.
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08-16-2019, 06:06 PM #66000 RPM
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I know a few folks locally with Yamaha and merc 150 4-strokes and they are all thrilled with them and swear they’ll never go back to 2-strokes. As compared to modern car motors, they are both very simple and reliable designs.
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checkmate45 liked this post
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08-16-2019, 06:19 PM #7Screaming And Flying!
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I've seen four-strokes burn pistons running hard on cheap res bargain fuel. Too bad though, could it be heavy loading and not enough rpm, any engine will hate that.
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08-16-2019, 06:36 PM #85000 RPM
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08-16-2019, 06:39 PM #95000 RPM
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08-16-2019, 07:19 PM #10Screaming And Flying!
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Detonation can happen at any point in the hours running. Could have been a 190 hr melt down, funny how it goes. What's the factory saying about running temp, throttle position, rpm etc? I'm sure they had a good look. Will it turn 6+ empty, just wondering? I'd think you would want it on the rev limiter empty.
Last edited by FMP; 08-16-2019 at 07:22 PM.
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08-16-2019, 07:28 PM #11
Bad gas?
Hydrostream dreamin
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08-16-2019, 07:35 PM #12Screaming And Flying!
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91 V Shell, one less thing to worry about.
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08-16-2019, 08:37 PM #13
Texas Parks and Wildlife (game wardens) has the same trouble with the E-Tecs. They're switching to Yamahas. The Evinrudes work great for a recreational user but they don't like working a full shift every day!
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08-17-2019, 12:50 AM #14
As someone who was an OMC tech from 1981 and loves a two stroke engine, my 50 four stroke Yamaha has sold me. Going on six years old and has not missed a beat. Drove it 220 miles down the intercoastal waterway last summer and had total confidence in it.
1970 15' Allison/135 Chrysler stacker
RC Mod-VP Boats
IMPBA District 13
NAMBA District 3
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08-17-2019, 05:31 AM #155000 RPM
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nitro_rat liked this post
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