Raising/lowering engine...how hard is it?

[TPD211]

Hi all, <br /><br />New to boating and I need to raise my engine due to low rpm as has been suggested in the forum. <br /><br />My question is, how difficult is this to do and can I do it alone or do I need some extra muscle to help?<br /><br />I bought the manual for my engine, 1993 88 SPL.<br /><br />Thanks in advance.

 

[v12mac]

Re: Raising/lowering engine...how hard is it?

I just had to remove and re-hang a 90 Hp (very similar)for a steering cable problem We did it with 3 guys holding the motor and one in the boat to thread the bolts. Not much fun. The problem isn't the weight it is getting the bolts to line up. <br /><br />Why not go rent an engine lift from an auto parts store? I am never doing it again the shade tree mechanic way!<br /><br />Also don’t forget that you will need some type of sealant to keep water from ruining your transom. Check with the real mechanics on this board for the correct product. I think 3M 5200 is the right stuff.<br /><br />One other item, are you sure engine height is the real problem? Where is the anti cav plate relative to the bottom to the hull now?<br /><br />Mac

 

[v12mac]

Re: Raising/lowering engine...how hard is it?

Now that I think about it, is it possible to loosen the bolts that are in the slots, remove the ones in the holes and slide it up a bit with a jack or something? <br /><br />That would only take a few minutes…<br /><br />Mac

 

[TPD211]

Re: Raising/lowering engine...how hard is it?

V12mac,<br /><br />Thanks for the reply,<br /><br />I havent had the boat out of the water yet, I bought it last friday and live on the same lake as the guy I bought it from. <br />I just took it from his dock to mine.<br /><br />I do not know the height of the anti-cav plate to the bottom of the hull. Looking at the back of the transom it appears lower than the bottom of the hull.<br /><br />Where should they be located in relation to each other? <br /><br />Thanks

 

[ChrisCKL]

Re: Raising/lowering engine...how hard is it?

im not sure if this is for all engines... but the antiventilation plate should be between 1-2 inches below the boat. <br />Note: make sure it is not more than 2 inches... other wise it can significantly slow your boat down and lots of water will spray up when running due to incorrect position. <br />To check the relation.... i suggest you go for a swim haha.

 

[bubbakat]

Re: Raising/lowering engine...how hard is it?

On both of my boats it is even with the bottom of the boat.

 

[walleyehed]

Re: Raising/lowering engine...how hard is it?

Even with the bottom would be the lowest point needed....1"-2" above would be better in most cases depending on hull style.

 

[angus63]

Re: Raising/lowering engine...how hard is it?

Tie motor to a sturdy tree branch and use trailer tongue for height adjustment. Worked for me with 55 evinrude.