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ContinuousWave: Whaler Performance
Repowering 17' Newport
|Author||Topic: Repowering 17' Newport|
posted 07-19-2003 04:09 PM ET (US)
I just bought a new 2000 Evinrude 115 FICHT for our Newport. The old '82 runs strong, but if we got 21 years out of the old one, I could not refuse the deal!! Any hints on the FICHT's??? Should we use the same hole set-up as the old sea-horse??? Thanks in advance!!
posted 07-19-2003 06:07 PM ET (US)
Has the engine been updated to Bombardier spec? Do you have a warranty?
Very high-risk purchase.
Red sky at night. . .
posted 07-20-2003 08:02 AM ET (US)
Yes, the motor has the software update...The V4's were not as bad as the V6's of the late 90's...The engine was caught up in a bankruptcy settlement of an OMC dealer and is owned by Bombardier...They offered us a 2 year warranty, just like the new motors..The engine is in Canada (so is the boat) They are going to install tomorrow!!
posted 07-20-2003 10:59 AM ET (US)
Sounds like you found a good deal. The issue on the older motors coming out of the OMC bankruptcy is the reliability issue that killed OMC. Bombardier has really cleaned up the problem. You might also want to look into the extended warranty. Earlier this year they were offering a 7 yr extended warranty on motor purchases - maybe you coudl finagle one of these.
I just repowered with a FICHT 75HP 2003 this year. Replaced a 70HP Johnson 2 stroke (1994).
You will need to retune the whole set up. For reference, before they switch motors make sure you note the hole set up on the old motor and the positioning of the AV plate relative to the bottom of the boat. Set the new motor up to be at these positions - unless the motor is full down.
Whaler recommends that the AV plate be a 0-3/4" up from the bottom of the boat. Anecdotal evidence from this forum and my own personal experience with my boat (Dauntless 15) show that this can be significantly higher and should be in the range of 1" to 1-3/4" above. In my case, I have the motor mounted all the way up and it is the sweet spot.
The FICHT will be heavier than your old motor. I would expect your old motor to be in the range of 150-270lbs the FICHT will be 324lb - same as my 75Hp. This can change the dynamics of your boat-motor combination such that you drag the tail.
To solve this, you should look at raising the motor as I mentioned, then adding a fin. To get it just perfect, you should look at replacing the stock prop with a high performance stainless one. Sal recommended Stilletto props - that is what I did and I was impressed.
There is a great fin for your boat made by Grand Island Marine. It is stainless steel, it doesn't require drilling the AV plate and it can be used as an emergency boarding device. It gave me radically better performance and it really quieted the exhaust noise down at planing speeds.
It made a huge difference on my boat and if the boat is properly set up this fin will not be riding in the water, but at the air-water interface or slightly above (unless the stern tries to drop and then it will push it back up). Your motor and mine, I believe, share the same block and lower unit dimensions. They GI fin is specific to motor configuration - they had to get the dimensions for my motor to make it - it fits so you should have no problem. GI Marine can be reached at (321) 452-8126 - located in Florida. Excellent product and you will probably need something like this.
I was heavily discouraged when I first repowered. The dealer set up my motor all the way down (~1/2" below bottom of boat). The ride was terrible, it porpoised like a kangaroo. Moving the motor up was about 40% improvement in ride, adding the fin was another 40% and the new prop was 10% or so.
So, I would carefully record the motor position in holes and AV plate position - especially if you like the ride with the old motor. With the new motor start at the same position and then you will probably need to go in height just because the motor is heavier and the stern will be lower. Also, about 90% of boats that I have looked at are mounted too low - so its a good guess that your is too low already.
What you are going to find is that the FICHT is hugely quiet in comparision to the motor you have now. The new motor is going to sip gas in comparision and the oil usage will be a lot less. No smoking etc...
Somewhere they changed the way they measured horsepower from at shaft to the prop (now). So, you will be delivering 115HP to the prop instead of to the shaft. This means that you will be getting a ton more kick out of equivalently sized motors using old and new methods. Your boat is going to fly.
Just expect some experimentation to get it right and I would almost certainly expect that you will need to raise the motor and add a fin.
URLs that will be helpful:
repowering saga on my boat:
one of the discussion on motor height:
you can, and should, also go to the search engine and search for porpoising and/or engine height. There is alot written here about those topics - the ones that you will most likely need to check out.
Hope that helps.
posted 07-20-2003 06:50 PM ET (US)
Thanks for your reply!! I printed this off and am going to give it to the dealer tomorrow and let him get the set up right... We run a stainless propeller on there now,so I would like to see how it does tomorrow after the changeover I am thinking of going to a 4 blade prop to see the hole shot... It was great with the other motor, but I bet it will be better with the new one...We mostly ski behind the boat so I am not to concerned about top end... The mechanic was going to start it at 1 1/2 inches up so he might be in the right ball park...I will take your advice on the fin...We will see how it runs and I will order one tomorrow just to have it here...Again thanks for the help!!!
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