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Author Topic:   Dauntless 15 and Mercury 60 Setup
wetdogsoup posted 02-19-2004 10:51 PM ET (US)   Profile for wetdogsoup   Send Email to wetdogsoup  
Has anyone with [a DAUNTLESS 15 and a Mercury 60 raised] their engine?

Specificly, I've raised my Mercury to the next to the top mounting hole [second hole]. [Water pick up appears to be] just fine and the SS prop doesn't break loose until I tilt the motor up to the point where the prop is raising a ridge of wake astern.

Does it sound as if I could still raise it one more hole to the top?

Can I predict my results using someone else's experience with the same boat/motor combination? - or are the engine mounting holes drilled by the dealer and therefore not always in the same vertical location?


jimh posted 02-19-2004 11:04 PM ET (US)     Profile for jimh  Send Email to jimh     
The location of the mounting holes drilled in the transom should be in a standard position dictated by a recommended layout and template. Of course, there is no guarantee that the person who rigged your boat has drilled these holes in the recommended locations, but that is the normal practice.
Clark Roberts posted 02-20-2004 06:55 AM ET (US)     Profile for Clark Roberts  Send Email to Clark Roberts     
Wetdog, raise it and try it out but keep an eye on that tattle tale cooling water stream. Best to have a temp gauge and water press gauge just to be safe and these gauges are not expensive and easy to install. Happy Whalin'./.. Clark.. SCN
wetdogsoup posted 02-20-2004 07:49 AM ET (US)     Profile for wetdogsoup  Send Email to wetdogsoup     
Thanks Jim & Clark,

Forgot to mention that when extending a straight edge from the keel, the bottom of the AV plate is just a hair over an inch above the keel. It appears from similar threads that 1 1/2" would be ideal - I'm just chicken to take it up to the next hole (1 3/4"):-0!!

What do you think of a jackplate on this puppy?

Just hate the thought of re-caulking the bolts & motor well all over again.....might as well get my lazy butt away from this computer.

ps. quick thanks to those that pitched in with input on prop selection. After dropping down from 14 to 13"p, picked up 200 rpm to 5300 with no measurable top end loss.


JohnJ80 posted 02-20-2004 10:03 AM ET (US)     Profile for JohnJ80  Send Email to JohnJ80     
I would go all the way up unless you boat in choppy (very) all the time.

I have mine at the max 1-3/4" up and I have no prop blowout and the performance and load on the motor got better with each step up. Cooling water has been just fine with adequate pressure and volume.

It just seems like the motor strains less. Getting another 3/4" of lower unit out of the water is a lot of drag reduction.

I also added a Grand Island Marine Turbo Lift fin. This fits over the AV plate and extends behind the motor. This rides on top of the water, not in it. I noticed that when I added it I had less exhaust noise and it seemed my acceleration on a plane was better. I'm thinking, qualitative here, that this keeps more solid water around the prop and puts a 'cap' on getting air in there. I could easily take it off, but I'm too lazy to worry about it.


Robob2003 posted 09-02-2004 08:42 AM ET (US)     Profile for Robob2003  Send Email to Robob2003     
Anybody know where I can get more information on the availability of the Grand Island Marine Turbo Lift?

I like the fact that a poster said it didn't require drilling the lower unit.

I've searched the web without success.

Thanks in advance,

Bob on Tampa Bay

JohnJ80 posted 09-03-2004 05:39 PM ET (US)     Profile for JohnJ80  Send Email to JohnJ80     
Grand Island Marine can be reached at (321) 452-8126. I think this is in Florida so he may not be reachable for the next several days due to Hurricane Frances.


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