I still wonder if your boat is trimmed properly. Why not get someone to take a pic of the boat with your normal load, people included and see how it is sitting in the water. Preferably, it would be good to have someone shoot a video as well to see how it is planing.
Having someone sit near the bow may not be the answer, you need the weight lower in the boat either on the v-berth or immediately behind it and enough of it to trim the boat level when sitting still.
ETEC 90: Poor Motoring Performance
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ssichler
- First Officer
- Posts: 342
- Joined: Thu May 04, 2006 9:22 am
- Location: Redondo Beach, CA 06 M 60hp E-Tec
According my E-Tec mechanic they can make this adjustment and it will use less oil on the synthetic setting. Doesn't seem related to performance.March wrote:What kind of oil are you using? Seems like the E-Tec accepts two different types of oil--the synthetic one, which is darn expensive, and the cheaper one. Doesn't the engine have to be adjusted based on the type of oil you're using?
The rub might be there.
Just got to try the test wheel..if the motor gets to 5000 rpm then it is developing the full 90 hp.All i could get was 4200 to 4300 .therefore the motor is not delivering anywhere near what it should be.Yes the motor has the proper etec oil in and believe me weve tried shifting weight foward so it seems ive been given a dud motor...over to bombardier now.Thanks all for your help.
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Dimitri-2000X-Tampa
- Admiral
- Posts: 2043
- Joined: Fri Jan 02, 2004 5:36 am
- Sailboat: MacGregor 26X
- Location: Tampa, Florida 2000 Mercury BigFoot 50HP 4-Stroke on 26X hull# 3575.B000
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Bobby T.-26X #4767
- Captain
- Posts: 906
- Joined: Mon Jan 05, 2004 10:48 am
- Sailboat: MacGregor 26X
- Location: Oceanside Harbor, CA
yes...it sounds like a lemon.
we had one guy on this board (JonBill from Texas) with a lemon 90 TLDI Tohatsu.
he only got 2/3 RPMs and speed.
it was determined that it was only running on two cylinders (rather than 3).
after 6 months he finally got them to accept the fact that it needed to be corrected.
it was an easily diagnosed mal-function and now runs great!
but the frustration that he went thru...kind of like you.
we had one guy on this board (JonBill from Texas) with a lemon 90 TLDI Tohatsu.
he only got 2/3 RPMs and speed.
it was determined that it was only running on two cylinders (rather than 3).
after 6 months he finally got them to accept the fact that it needed to be corrected.
it was an easily diagnosed mal-function and now runs great!
but the frustration that he went thru...kind of like you.
Just tried another prop..13.3/4 by 13 inch 3 blade alloy.Very interesting ..this felt a lot better..max 21.4 knots at 4700 rpm. This same prop is the one I believe is on the boat doing 29knots <Im told>but this engine is revving to 5500.Sort of confirms my engine is not giving 90hp.Theres got to be a reason!!
Totally agree the non cupped props are a lot better.J ust managed to try a 14 by11 inch 3 blade alloy as suggested and max rpm were 5000 giving 20.3 knots or 23 mph.So not as good as the 13 3/4 by 13 which was the last prop i tried.It was a little faster at max rpm but was 2 to 3 knots better at cruising rpm between 3500 and 4000 .Max rpm was 4700 which is low but within evinrudes specs of 4500 to 5500.Most important was with the same prop <14 by11>it had slightly worse performance than the 75 hp etec on richard waltons boat so i keep coming back to the conclusion that my motor is not giving its full 90hp.
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Rich Walton
- Chief Steward
- Posts: 79
- Joined: Mon Jan 05, 2004 1:05 pm
- Location: Dana Point CA. 2002 X 75hp E-Tec
Or the M is a little heaver than the X, and maybe a little slower under power. I had the boat out this weekend and was able to run at 20 plus MPH we had a little chop and a little trafic. so i took it easy. i found that just by playing with the tilt i can get 1-2 mph out of it when i am at high speed.
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Duane Dunn, Allegro
- Admiral
- Posts: 2459
- Joined: Fri Jan 02, 2004 6:41 pm
- Sailboat: MacGregor 26X
- Location: Bellevue, Wa '96 26x, Tohatsu 90 TLDI and Plug In Hybrid Electric drive
- Contact:
The M responds differently power than an X. It does not give increased performance from higher horsepower like the flatter bottomed X does.
Todd at BWY tried both a Tohatsu TLDI 70 and a TLDI 90 on the M. He got identical performance with each motor (They are physically the same motor except for tuning). He feels that the rounder M hull has a upper speed limit.
This had led him to recommend 70hp as the highest needed for a M. The flat bottomed X has a more linear response to higher horsepowers and easily goes faster with each bigger the motor you bolt on. Now I'm sure a M with a 150hp would go faster, but staying with reasonable sized motors for these boats there is no perfomance advantage of a 90hp over a 70hp on a M.
Your results seem to echo exactly what he found in his testing.
Todd at BWY tried both a Tohatsu TLDI 70 and a TLDI 90 on the M. He got identical performance with each motor (They are physically the same motor except for tuning). He feels that the rounder M hull has a upper speed limit.
This had led him to recommend 70hp as the highest needed for a M. The flat bottomed X has a more linear response to higher horsepowers and easily goes faster with each bigger the motor you bolt on. Now I'm sure a M with a 150hp would go faster, but staying with reasonable sized motors for these boats there is no perfomance advantage of a 90hp over a 70hp on a M.
Your results seem to echo exactly what he found in his testing.
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Gazmn
- Admiral
- Posts: 1129
- Joined: Wed May 31, 2006 10:22 pm
- Sailboat: MacGregor 26X
- Location: Bayside, NY '97X, E-tec 115 Pontoon, The "Ollie Gray" & '01 Chevy Tahoe W/ Tow Pkg; AL 2X Trlr.
Sorry for your disapointment Sorcha,
Let's hope it's just that and not some sort of malfunction. It doesn't sound like a malF... I too was a bit disappointed with my 90's performance - and then I got more reasonable regarding my expectations. Ol man winter has come and put a quick halt to my experimentation.
But I have accepted that:
This is not a race boat. 20 kts is PDG as in Pretty D@mn Good. I have enough torque to spin me through ANYTHING that can't be sailed up or through
Our warantees and ease of maintenance have exceeding value over squeezing out another knot or two. You have your yacht square in Trawler and Luxury hybrid motor speeds - be thankful. IMO, move on and start concentrating on getting your most efficient MPG figures.
Cheers,
- Gaz
Let's hope it's just that and not some sort of malfunction. It doesn't sound like a malF... I too was a bit disappointed with my 90's performance - and then I got more reasonable regarding my expectations. Ol man winter has come and put a quick halt to my experimentation.
But I have accepted that:
This is not a race boat. 20 kts is PDG as in Pretty D@mn Good. I have enough torque to spin me through ANYTHING that can't be sailed up or through
Our warantees and ease of maintenance have exceeding value over squeezing out another knot or two. You have your yacht square in Trawler and Luxury hybrid motor speeds - be thankful. IMO, move on and start concentrating on getting your most efficient MPG figures.
Cheers,
- Gaz
yeh your right the performance is not too bad and i fully understand the important thing is cruise performance.I guess though that if the motor isnt giving its full rated power i would like it to be fixed.The reason i opted for a 90hp was so i would have significant reserve power and that the boat would cruise reasonably quickly without running the engine at high power settings.and also cope when laden heavily.you can understand when im assured by the dealer the 90 etec will give 25 knots and another owner claiming 29 knots my boat is a long way off at 21.4.Where we go boating we have significant distances to travel and quite often there can be virtually no wind so motoring performance is very important to us.thanks again all.