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  1998 EDGEWATER 155CC: Metal Lip On Transom Interferes With Raising Engine Mounting Position

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Author Topic:   1998 EDGEWATER 155CC: Metal Lip On Transom Interferes With Raising Engine Mounting Position
Mike D1 posted 05-10-2011 09:41 AM ET (US)   Profile for Mike D1   Send Email to Mike D1  
This spring, on Tom Clark's recommendation I purchased a new Stiletto stainless steel propeller [for use on a 1998 Edgewater 155cc]. I also planned on raising the [Yamaha] 90-HP by at least one bolt hole, maybe two. It is all the way down, and definitely too low. When I try to raise [the engine mounting height], [the engine mount] gets caught on a metal lip that covers the top of the transom. IF I am able to raise it above that point, it will likely crush that lip when I re-bolt the engine. Should I worry about that or just go ahead and force it? Any suggestions and ideas?
Tom W Clark posted 05-10-2011 09:49 AM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
I suggest you remove that portion of the metal lip that is causing the interference.
Mike D1 posted 05-10-2011 09:54 AM ET (US)     Profile for Mike D1  Send Email to Mike D1     
Tom, you're probably right. I was kind of thinking that. I'll need to find a garage with beams so I can lift the motor off. Guess I was just hoping there might be some other way. Thanks again!
Tom W Clark posted 05-10-2011 10:04 AM ET (US)     Profile for Tom W Clark  Send Email to Tom W Clark     
You only need a enough hanging support to keep the motor form tipping over. This could be as simple as a tree branch or an A-frame made of a few 2x4s. It will not need to bear much weight.

Once the motor is blocked under the skeg and unbolted from the hull you can pull the boat forward away from it leaving all the rigging connected. This will give you enough room to work on t eh transom trim.

I can't believe Edgewater would be so short sighted as to apply trim so you cannot adjust the motor height. That's ridiculous.

Tohsgib posted 05-10-2011 01:47 PM ET (US)     Profile for Tohsgib  Send Email to Tohsgib     
I do not believe you will crush the lip very much. My Hydra-Sports had a metal thingy surrounding the transom and it did not interfere with raising the engine. I just put a small shim below it.
Mike D1 posted 05-10-2011 02:22 PM ET (US)     Profile for Mike D1  Send Email to Mike D1     
You guys are incredibly helpful, much appreciated :) I think I'll probably try using a little wedge shaped shim first to see if I can get the motor to slide up on the lip. If if tightens down okay, fine. If it looks like it will be a problem, I'll follow Tom's advice and get the metal cutaway, reseal, and then install motor. Thanks again!
contender posted 05-10-2011 03:49 PM ET (US)     Profile for contender  Send Email to contender     
Engine crane for lifting the engine. Or If you can hold the engine in place you can do this, Let the engine down, Block your trailer tires from moving, Go to the front of your trailer put a thick piece of wood under the jack and lower it all the way. Go to the back of the boat and unbolt what's needed, go to the front of the trailer and raise the jack, this will pick/force your engine off the transom. Then work on your transom...
L H G posted 05-10-2011 03:54 PM ET (US)     Profile for L H G    
Where I live, I can rent and engine hoist for $25/day, the kind you can tow behind your car. Simple, safe, and very convenient to use. By the time you fool around with all of the other gear, chains and hooks, it's just as easy.

Be sure that Yamaha isn't blind hole mounted.

Mike D1 posted 05-31-2011 04:36 PM ET (US)     Profile for Mike D1  Send Email to Mike D1     
Update: With a little more leverage, was able to lift the motor over that little lip without a problem. Raised it only one hole to start. Finally got a chance to test yesterday. The mighty Mississippi was really choppy from a strong southerly wind and a lot of wake action. My wife didn't feel like getting pounded so I only made a couple quick trials. But, wow! The combination of new Stilletto prop (thanks Tom for the recommendation) and raised engine seemed to make a major improvement in how she runs. Within the next week I hope to get some time to do some checking with GPS etc. Will report back. Might end up raising engine further, we'll see. Thanks again for all the help!
Slick 50 posted 05-31-2011 09:20 PM ET (US)     Profile for Slick 50  Send Email to Slick 50     
Sounds like you are heading the right way. Have you trimmed the engine in and out to see how the boat acts with the new prop? That is a fine prop.

Next time you are out, try turning pretty hard while on plane, about 25 or 30 MPH. If the prop does not break loose you could probably raise the engine another hole. Another thing we do is get someone to go back and look at where the water is hitting the lower unit while the boat is up on plane. At he front of the lower unit we shoot for about an inch and a half below the anti-ventilation plate. Be careful doing this, anything in your shirt pocket might fly away.

Good luck,
Rick

Mike D1 posted 06-01-2011 10:38 AM ET (US)     Profile for Mike D1  Send Email to Mike D1     
Thanks Rick. I'll definitely be checking it out more completely. Hopefully I'll have time for a brief run tonight w/ GPS. Definitely by next week I'll have some more time to really get it dialed in. It's going to be a great summer!

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