Can a JackPlate be used for this ?

JJB

Petty Officer 1st Class
Joined
Dec 28, 2006
Messages
274
I need to repower my boat and I was told that the old holes don't line up with my new Johnson engine . Can I use a jackplate to solve this problem ?I dont need to lower the engine just line up holes . Instead of filling and re drilling the holes that are so close to old ones . JJB
 

WillyBWright

Fleet Admiral
Joined
Dec 29, 2003
Messages
8,200
Re: Can a JackPlate be used for this ?

Filling the holes isn't so bad. Make sure they're clean with good fresh wood surface inside. You might have to drill to the next size. Then cut dowels about 1/2" short of flush of the transom. Coat the hole and the plug with Ultra Silicone, shove the plug in so it's centered inside the transom, then fill the holes and form caps with more Ultra Silicone. There are several colors of Ultra Silicone. Buy something close. The holes are going to be between the clamp brackets and out of sight anyhow, except the front top two in the motorwell. About ten bucks altogether and you don't hardly need much of it. Don't use regular silicone. UV gets to it.

Problem with using a jackplate usually involves the steering cable and how offsetting the motor back affects cable routing. Can the motor still be reached without any radical bends in the cable? Will you need a longer cable? If you were upgrading to hydraulic steering anyhow, then routing isn't a problem. But that's abuncha $$$. Is the transom strong enough?
 

Dhadley

Supreme Mariner
Joined
Feb 4, 2001
Messages
16,978
Re: Can a JackPlate be used for this ?

What motor was on there before? What motor are you installing?
 

JJB

Petty Officer 1st Class
Joined
Dec 28, 2006
Messages
274
Re: Can a JackPlate be used for this ?

Was a 150 force now a 150 Johnson
 

Kajun37

Petty Officer 1st Class
Joined
Feb 17, 2006
Messages
348
Re: Can a JackPlate be used for this ?

JJB...i just repowered from a force 120 to a johnson 140.....and i used a jackplate due to the johnson being a 25inch instead of a 20inch like the force......got the johnson free so it was worth it for me...

but if the johnson was a 20inch i would not have used a jackplate due to the extra 40lbs i had to put on my transom....plus you have to drill and fill your force holes with dowel's anyway...

if i had it to do over again and had a 20inch replacement i would have overdrilled the holes and doweled them and then driled whatever holes was needed for it.
 
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