1962 Sportsman Out Board Motor Mount

L

lynchalonzo

Recruit
Joined
Jul 16, 2012
Messages
4
Hello I just picked up this boat. It looks like for some reason there was wood added and the engine was raised higher. I took the boat out and it is very slow with a 50 Johnson. Is it possible it is because the engine is to high and the properlors are barely under the water? Can I cut the wood and just reseal the top where I cut to match the shape of the rear of the boat. I would have to shave down the left over wood though in order to make the mount fit over the wood and back hull of the boat because the wood is so wide. Is this safe to do? and What would be best to use to cut and shave a portion of the wood down just maybe a 1/4 inch to make the mount fit over? thank you erikIMAG0576.jpgIMAG0577.jpgIMAG0578.jpg
 
snowman48047

snowman48047

Petty Officer 1st Class
Joined
Jul 24, 2008
Messages
371
Re: 1962 Sportsman Out Board Motor Mount

Hard to tell from the pics if the engine ie too high or not. Where is the cavitation plate in relation to the bottom of the hull? Looks like a long shaft motor on a short transomed boat and someone rigged it.

Take a pic with the engine down so we can see the stern and the prop.
 
kfa4303

kfa4303

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Sep 17, 2010
Messages
6,094
Re: 1962 Sportsman Out Board Motor Mount

Hi lynch. As snowman said, make sure the anti-vent plate is level, or slightly higher than the keel of the boat. OMC motors of this era have sort of an odd leg length and are often raised a few inches to compensate. The low power is probably due tp the fact that you're dropping a cylinder. Confirm compression, spark and fuel delivery individually, then try to run it again on the water. These links may help.

http://www.marineengine.com/parts/v...ntage-evinrude-johnson/378825/37882500001.htm

http://www.duckworksmagazine.com/04/s/columns/max/24/index.cfm

http://www.outboard-boat-motor-repa...on 3 HP 1952-1967 Ignition System Tune-up.htm

http://www.outboard-boat-motor-repa...hnson 5.5 HP 1954-1964 Carburetor Tune-UP.htm
 
L

lynchalonzo

Recruit
Joined
Jul 16, 2012
Messages
4
Re: 1962 Sportsman Out Board Motor Mount

To be honest. I'm kind of slow lol. This is my first boat so I am not sure what you mean by make sure the anti-vent plate is level & cavitation plate. i sent another pic showing the tilt whole its in maybe i should lower it one or two. I also called the guy I got the boat from he said he cut it higher to reduce the amount of splash coming back when you slow down he said.
 
kfa4303

kfa4303

Banned
Joined
Sep 17, 2010
Messages
6,094
Re: 1962 Sportsman Out Board Motor Mount

The antivent plate is right above the prop. You want it to be level, or slightly higher than the bottom (keel) of the boat. Because Johnson/Evinrude motors of that era had a rather long lower unit, the motors often have to be raised to get the anti-vent plate in the proper position. Here are some pics.

motor height on transom.jpg
1-Correct Trim Angle.JPG
motor height.jpg (anti-vent plate is too low)
Finished plate 1-labeled.jpg (transom riser I made from 1/4" aluminum angle)
motor height 2.jpg (anti-vent plate on my motor. It is actually level with the bottom of the boat even though it looks a little higher)(The blue line is the approximate waterline)
 
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